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HYBRIDIZATION AND NATURAL GENE‐FLOW BETWEEN HIGHER PLANTS

1951; Wiley; Volume: 26; Issue: 3 Linguagem: Inglês

10.1111/j.1469-185x.1951.tb01359.x

1469-185X

Herbert G. Baker,

Plant and animal studies

Biological ReviewsVolume 26, Issue 3 p. 302-336 HYBRIDIZATION AND NATURAL GENE-FLOW BETWEEN HIGHER PLANTS H. G. BAKER, H. G. BAKER Department of Botany, University of LeedsSearch for more papers by this author H. G. BAKER, H. G. BAKER Department of Botany, University of LeedsSearch for more papers by this author First published: August 1951 https://doi.org/10.1111/j.1469-185X.1951.tb01359.xCitations: 45AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat REFERENCES Akerberg, E. (1939). Apomictic and sexual seed formation in Poa preterms. Hereditas, Lund, 25, 359. 10.1111/j.1601-5223.1939.tb02702.x Google Scholar Akerlund, E. (1933). Ein Fall von Naturselektion in einer Kreuzungspopulation. Hereditas, Lund, 18, 16. 10.1111/j.1601-5223.1933.tb02595.x Google Scholar Allan, H. H. (1931). The significance of hybridism in the New Zealand flora. Rep. Aust. Ass. Adv. Sci. 20, 429. Google Scholar Allan, H. H. (1937). Wild species-hybrids in the phanerogams. Bot. Rev. 3, 593. 10.1007/BF02872293 Google Scholar Allan, H. H. (1940). Natural hybridization in relation to taxonomy. In The new systematics, ed. J. S. Huxley, p. 515 Oxford . Google Scholar Allan, H. H. (1949). Wild species-hybrids in the phanerogams. II. Bot. Rev. 15, 77. 10.1007/BF02861774 Web of Science®Google Scholar Anderson, E. (1936a). Hybridization in American Tradescantias. I. A method of measuring species hybrids. II. Hybridization between T. virginiana and T. canaliculate. Ann. Mo. bot. Gdn, 23, 511. 10.2307/2394165 Google Scholar Anderson, E. (1936b). A morphological comparison of triploid and tetraploid interspecific hybrids in Tradescantia. Genetics, 21, 6. Google Scholar Anderson, E. (1939a). Recombination in species crosses. Genetics, 24, 668. 10.1093/genetics/24.5.668 CASPubMedWeb of Science®Google Scholar Anderson, E. (1939b). The hindrance to gene-recombination imposed by linkage: An estimate of its total magnitude. Amer. Nat. 73, 185. 10.1086/280826 Google Scholar Anderson, E. (1948). The hybridization of the habitat. Evolution, 2, 1. 10.1111/j.1558-5646.1948.tb02726.x Web of Science®Google Scholar Anderson, E. (1949). Introgressive hybridization. New York . 10.5962/bhl.title.4553 Google Scholar Anderson, E. & Hubricht, L. (1938a). Hybridization in Tradescantia. III. The evidence for introgressive hybridization. Amer. J. Bot. 25, 396. 10.1002/j.1537-2197.1938.tb09237.x Google Scholar Anderson, E. & Hubricht, L. (1938b). The American sugar maples. I. Phylogenetic relationships as deduced from a study of leaf variation. Bot. Gaz. 100, 312. 10.1086/334787 Google Scholar Andreas, Ch. H. (1946). De inheemische Erodia van Nederland. Doctoral thesis, Univ. of Groningen. Google Scholar Ash, G. M. & Sandwith, N. Y. (1935). Epilobium adenocaulon Hausskn. in Britain. J. Bot., Lond., 73. 177. Google Scholar Auskelis, H. & Zamelis, A. (1931). Ein schon von F1 an konstanter Bastard—Viola arteficiosa Ausekl., erhalten durch Kreuzung von V. bosniaca Form. mit V. arvensis Murr.. Acta Hort. bot. Univ. latv. 6, 95. Google Scholar Babcock, E. B. (1942). Systematics, cytogenetics and evolution in Crepis. Bot. Rev. 8, 140. 10.1007/BF02888401 Google Scholar Babcock, E. B. (1947). The genus Crepis. I. The taxonomy, phytogeny, distribution and evolution of Crepis. Univ. Calif. Publ. Bot. 21, 1. Google Scholar Babcock, E. B. & Cave, M. S. (1938). A study of intra and inter-specific relations of Crepis foetida, L. Z. indukt. Abstamm. u. VererbLehre, 75, 124. 10.1007/BF01847610 Google Scholar Bailey, L. H. (1929). Statement on the systematic study of variables. Proc. Int. Congr. Pl. Sci. 2, 1427. Google Scholar Baker, E. G. & Salmon, C. E. (1920). Some segregants of Erodium cicutarium Ľ 'Hér. J. Bot., Lond., 58, 121. Google Scholar Baker, H. G. (1945a). The autecology of Melandrium dioicum (L. emend.) Simonkai, M. album (Mill.) Garcke (Lychnis) and their hybrid. Ph.D. thesis, University of London. Google Scholar Baker, H. G. (1945b). A note on natural hybridization. Naturalist, Lond., p. 129. Google Scholar Baker, H. G. (1947a). Account of genus Melandrium for the Biological Flora of the British Isles. J. Ecol. 35, 271. 10.2307/2256515 PubMedWeb of Science®Google Scholar Baker, H. G. (1947b). Criteria of hybridity. Nature, Lond., 159, 221, 546. 10.1038/159221a0 PubMedWeb of Science®Google Scholar Baker, H. G. (1947c). The reaction of plants of the genus Melandrium to exposure. Proc. Leeds Phil. Soc. (Sci. sect.), 4, 359. Google Scholar Baker, H. G. (1948a). Stages in invasion and replacement demonstrated by species of Melandrium. J. Ecol. 36, 96. 10.2307/2256649 Web of Science®Google Scholar Baker, H. G. (1948b). The ecotypes of Melandrium dioicum (L. emend.) Coss. & Germ. New Phytol. 47, 131. 10.1111/j.1469-8137.1948.tb05096.x Web of Science®Google Scholar Baker, H. G. (1948c). Dimorphism and monomorphism in the Plumbaginaceae. I. A survey of the family. Ann. Bot. (N. S.), 12, 207. 10.1093/oxfordjournals.aob.a083185 Web of Science®Google Scholar Baker, H. G. (1949a). Experimental taxonomy: Studies in Armeria and the Geraniaceae. Yearb. Carneg. Instn, no. 48, 1948–9, p. 103. Google Scholar Baker, H. G. (1949b). Some aspects of the genetics of dimorphism and monomorphism. Address to Genetics Seminar, University of California, Berkeley, 3 May 1949. Google Scholar Baker, H. G. (1950). The inheritance of certain characters in crosses between Melandrium dioicum and M. album. Genetica, 25, 126. 10.1007/BF01784828 CASPubMedGoogle Scholar Baker, H. G. (1951a). The agamic complex in Limonium (sects. Densiflorae and Dissitiflorae). Proc. 7th Int. Congr. Bot., Stockh., 1950. Google Scholar Baker, H. G. (1951b). Dimorphism and monomorphism in the Plumbaginaceae. II. The genus Limonium. Ann. Bot. (N. S.) (in the press). Google Scholar Bateman, A. J. (1946). Genetical aspects of seed-growing. Nature, Lond., 157, 752. 10.1038/157752a0 Google Scholar Bernström, P. (1949). Cytogenetic studies in the genus Lamium. Pre-Congress excursion demonstration at Institute of Genetics and Botanical Garden, Lund, 1948. Suppl. vol., Hereditas, Lund, 39. Google Scholar Blakeslee, A. F. & Satina, S. (1949). Differences in crossability between species of Datura due to individual races used in the cross (abstract). Amer. J. Bot. 36, 795. Web of Science®Google Scholar Bøcher, T. W. (1949). Racial divergences in Prunella vulgaris in relation to habitat and climate. New Phytol. 48, 285. 10.1111/j.1469-8137.1949.tb05127.x Web of Science®Google Scholar Bradshaw, A. D. & Cuany, R. L. (1948). Ecological observations on the two British hawthorns (abstract), J. Ecol. 36, 197. Google Scholar Brown, W. L. (1941). The cytogenetics of Poa pratensis. Ann. Mo. bot. Gdn, 28, 493. 10.2307/2394362 Google Scholar Buchholz, J. T., Williams, L. F. & Blakeslee, A. F. (1935). Pollen tube growth of ten species of Datura in interspecific pollinations. Proc. Nat. Acad. Sci., 21, 651. 10.1073/pnas.21.12.651 CASPubMedGoogle Scholar Cannon, H. G. (1949). Non-adaptive characters. Nature, Lond., 164, 882. 10.1038/164882a0 CASPubMedGoogle Scholar Carlson, E. M. & Stuart, B. C. (1936). Development of spores and gametophytes in certain New World species of Salvia. New Phytol. 35, 68–91. 10.1111/j.1469-8137.1936.tb06866.x Google Scholar Caspari, E. (1948). Cytoplasmic inheritance. Adv. Genet, 2, 1. New York. 10.1016/S0065-2660(08)60465-4 Web of Science®Google Scholar Charles, D. R. & Goodwin, R. H. (1943). An estimate of the minimum number of genes differentiating two species of goldenrod with respect to their morphological characters. Amer. Nat. 77. 53. 10.1086/281098 Google Scholar Choudhuri, H. C. (1942). Chromosome studies in some British species of Limonium. Ann. Bot. (N. S.), 6, 183. Web of Science®Google Scholar Christy, M. (1922). Primula elatior Jacquin: its distribution in Britain. J. Ecol. 10, 200. 10.2307/2255741 Google Scholar Clapham, A. R. (1949). Ecology and critical groups. In British flowering plants and modern systematic methods, ed. A. J. Wilmott. London . Google Scholar Clausen, J. (1926). Genetical and cytological investigations on Viola tricolor, L. and V. arvensis, Murr. Hereditas, Lund, 8, 1. 10.1111/j.1601-5223.1926.tb03159.x Web of Science®Google Scholar Clausen, J. (1949). Genetics of climatic races of Potentilla glandulosa. Proc. 8th Int. Congr. Genet., Stockh., 1948. Suppl. vol., Hereditas , Lund , 162 pp. Google Scholar Clausen, J., Keck, D. D. & Hiesey, W. M. (1939). The concept of species based on experiment. Amer. J. Bot. 26, 103. 10.1002/j.1537-2197.1939.tb12875.x Google Scholar Clausen, J., Keck, D. D. & Hiesey, W. M. (1940). Experimental studies on the nature of species. I. Effect of varied environments on western North American plants. Publ. Carneg. Instn, no. 520. Google Scholar Clausen, J., Keck, D. D. & Hiesey, W. M. (1945a). Experimental studies on the nature of species. II. Plant evolution through amphiploidy and autoploidy with examples from the Madiinae. Publ. Carneg. Instn, no. 564. Google Scholar Clausen, J., Keck, D. D. & Hiesey, W. M. (1945b). Experimental taxonomy. Yearb. Carneg. Instn, no. 44, 1945–6. Google Scholar Clausen, J., Keck, D. D. & Hiesey, W. M. (1947). Heredity of geographically and ecologically isolated races. Amer. Nat. 81, 114. 10.1086/281507 CASPubMedWeb of Science®Google Scholar Clausen, J., Keck, D. D. & Hiesey, W. M. (1948). Experimental studies on the nature of species. III. Environmental responses of climatic races of Achillea. Publ. Carneg. Instn, no. 581. Google Scholar Clausen, J., Keck, D. D. & Hiesey, W. M. (1949). Experimental taxonomy. Yearb. Carneg. Instn, no. 48, 1948–9. Google Scholar Cleland, R. E. (1940). Analysis of wild American races of Oenothera (Onagra). Genetics, 25, 636. 10.1093/genetics/25.6.636 CASPubMedGoogle Scholar Cleland, R. E. (1944). The problem of species in Oenothera. Amer. Nat. 78, 5. 10.1086/281163 Google Scholar Cleland, R. E. (1949). Phylogenetic relationships in Oenothera. Proc. 8th Int. Congr. Genet., Stockh., 1948. Suppl. vol., Hereditas , Lund 173. Google Scholar Cocayne, L. (1923). Hybridism in the New Zealand flora. New Phytol. 22, 105. 10.1111/j.1469-8137.1923.tb06604.x Google Scholar Correns, C. (1921). Versuche bei Pflanzen das Geschlechts-verhältnis zu verschieben. Hereditas, Lund, 2, 1. 10.1111/j.1601-5223.1921.tb03170.x Google Scholar Crane, M. B., Thomas, P. T. & Darlington, C. D. (1949). Reproductive versatility in Rubus. III. Raspberry-blackberry hybrids. Heredity, 3, 99. 10.1038/hdy.1949.5 CASPubMedWeb of Science®Google Scholar Crosby, J. L. (1949). Selection of an unfavourable gene-complex. Evolution, 3, 212. 10.1111/j.1558-5646.1949.tb00022.x CASPubMedWeb of Science®Google Scholar Dansereau, P. & Desmarais, Y. (1947). Introgression in sugar maples. II. Amer. Midi. Nat. 37. 146. 10.2307/2421649 Web of Science®Google Scholar Dansereau, P. & Lafond, A. (1941). Introgression des caracteres de ľAcer saccharophorum K. Koch et de ľAcer nigrum Michx. Contr. Inst. Bot. Univ. Montreal, 37, 15. Google Scholar Darlington, C. D. & Mather, K. (1949). The elements of genetics. London . Google Scholar Dempster, E. R. (1949). Effects of linkage on parental-combination and recombination frequencies in F2,. Genetics, 34, 272. 10.1093/genetics/34.3.272 CASPubMedWeb of Science®Google Scholar Diels, L. (1924). Aufgaben der Phytographie und der Systematic. In Abderhalden, Handbuch der biologischen Arbeitsmethoden, Abt. 11, Teil. 1, p. 69. Berlin and Vienna . Google Scholar Dobzhansky, TH. (1941). Genetics and the origin of species, 2nd ed. New York . Google Scholar Druce, G. C. (1896). The hybrids of Linaria repens and L. vulgaris in Britain. Ann. Bot., Lond., 10, 622. Google Scholar Druce, G. C. (1897). The flora of Berkshire. Oxford . Google Scholar Druce, G. C. (1901). On the British species of sea-thrifts and sea-lavenders. J. linn. Soc. (Lond.), 35, 66. 10.1111/j.1095-8339.1901.tb02319.x Google Scholar Druce, G. C. (1927). The flora of Oxfordshire, 2nd ed. Oxford . Google Scholar East, E. M. (1934). A novel type of hybridity in Fragaria. Genetics, 19, 167. CASPubMedGoogle Scholar Epling, C. (1947a). Actual and potential gene-flow in natural populations. Amer. Nat. 81, 104. 10.1086/281506 CASPubMedWeb of Science®Google Scholar Epling, C. (1947b). Natural hybridization of Salvia apiana and S. mellifera. Evolution, 1, 69. 10.1111/j.1558-5646.1947.tb02715.x Web of Science®Google Scholar Fabergé, A. C. (1943). Genetics of the Scapiflora section of Papaver. II. The alpine poppy. J. Genet. 45, 139. 10.1007/BF02982932 Google Scholar Fabergé, A. C. (1944). Genetics of the Scapiflora section of Papaver. III. Interspecific hybrids and genetic homology. J. Genet. 46, 125. 10.1007/BF02986697 Google Scholar Fagerlind, F. (1937). Embryologische, cytologische und bestaubungsexperimentelle Studien in der Familie Rubiaceae nebst Bemerkungen iiber einige Polyploidistätsprobleme. Acta Hort. berg. 11, 195. Google Scholar Focke, W. O. (1881). Die Pflanzenmischlinge, ein Beitrag zur Biologie der Gewächse. Berlin . Google Scholar Ford, E. B. (1949). Non-adaptive characters. Nature, Lond., 164, 882. 10.1038/164882b0 PubMedWeb of Science®Google Scholar De Fraine, E. & Salisbury, E. J. (1916). The morphology and anatomy of the genus Statice as represented at Blakeney Point. I. Statice binervosa G. E. Sm. and S. bellidifolia D. C. Ann. Bot., Lond., 30, 239. Google Scholar Gagnepain, F. (1896). Sur un hybride artificiel des Lychnis diurna et vespertina. Bull. Soc. bot. Fr. 43. 129. 10.1080/00378941.1896.10828862 Google Scholar Gagnepain, F. (1897). Un hybride artificiel des Lychnis diurna et vespertina (2e note). Bull. Soc. bot. Fr. 44, 441. 10.1080/00378941.1897.10830803 Google Scholar Gajewski, W. (1949). Cytogenetic investigations on the genus Geum L. Abstract in Proc. & th Int. Congr. Genet., Stockh., 1948. Suppl. vol., Hereditas , Lund , 578. Google Scholar Giles, N. (1941). Chromosome behaviour at meiosis in triploid Tradescantia hybrids. Bull. Torrey bot. Cl., 68, 207. 10.2307/2481499 Google Scholar Gilmour, J. S. L. (1934). Preliminary note on pollination in Centaurium. Proc. Linn. Soc. Lond. 146th session, no. 109. Google Scholar Godfery, M. J. (1933). Monograph and iconograph of native British Orchidaceae (with plates by Hilda M. Godfery). Cambridge . Google Scholar Goodwin, R. H. (1937a). The cytogenetics of two species of Solidago and its bearing on their polymorphy in nature. Amer. J. Bot. 24, 425. 10.1002/j.1537-2197.1937.tb09124.x Google Scholar Goodwin, R. H. (1937b). Studies on the seedling development of Solidago rugosa Mill., S. sempervirens L., and the reciprocal hybrids between them. Amer. J. Bot. 24, 627. 10.1002/j.1537-2197.1937.tb09158.x CASGoogle Scholar Grant, V. (1949). Pollination systems as isolating mechanisms in Angiosperms. Evolution, 3, 82. 10.1111/j.1558-5646.1949.tb00007.x CASPubMedWeb of Science®Google Scholar Gustafsson, Å. (1947). Apomixis in higher plants. III. Biotype and species formation. Acta Univ. lund., N. F., Avd. 2, Bd. 43, Nr. 12. Google Scholar Harland, S. C. (1936). The genetical conception of the species. Biol. Rev. 11, 82. 10.1111/j.1469-185X.1936.tb00498.x Google Scholar Hegi, G. (1931). Illustrierte Flora von Mittel-Europa, 5(2). Munich . Google Scholar Heiser, C. B. (1947a). Hybridization between the sunflower species Helianthus annuus and H. petiolaris. Evolution, 1, 249. 10.1111/j.1558-5646.1947.tb02722.x Web of Science®Google Scholar Heiser, C. B. (1947b). Variability and hybridization in the sunflower species Helianthus annuus and H. Bolanderi in California. Ph.D. thesis, University of California, Berkeley. Google Scholar Heiser, C. B. (1949a). An evolutionary study of the sunflower species Helianthus annuus and H. Bolanderi. Univ. Calif. Publ. Bot. 23, 157. Google Scholar Heiser, C. B. (1949b). Natural hybridization with special reference to introgression. Bot. Rev. 15, 645. 10.1007/BF02861577 Web of Science®Google Scholar Hiorth, G. (1934). Genetische Versuche mit Collinsia. 4. Die Analyse eines nahezu sterilen Artbastardes. I. Die diploiden Bastarde zwischen Collinsia bicolor und C. bartsiaefolia. Z. indukt. Abstamm. u. VererbLehre, 66, 245. 10.1007/BF01739844 Google Scholar Hollingshead, L. (1930). A lethal factor effective only in an interspecific hybrid. Genetics, 15. 114. CASPubMedWeb of Science®Google Scholar Hubricht, L. & Anderson, E. (1941). Vicinism in Tradescantia. Amer. J. Bot. 28, 957. 10.1002/j.1537-2197.1941.tb11030.x Google Scholar Hulten, E. (1929). Flora of Kamtchatka and the adjacent islands. III. Dicotyledoneae, Droseraceae-Cornaceae. K. svenska Vetensk Akad. Handl. 8(1). Stockholm. Google Scholar Hutchinson, J. B., Silow, R. A. & Stephens, S. G. (1947). The evolution of Gossypium. London . Google Scholar Huxley, J. S. (1942). Evolution: the modern synthesis. London . Google Scholar Jenkin, T. J. (1935). Interspecific and intergeneric hybrids in herbage grasses. II. Lolium perenne xL. temulentum. J. Genet. 31, 379. 10.1007/BF02982408 Google Scholar Jenkin, T. J. & Thomas, P. T. (1939). Interspecific and intergeneric hybrids in herbage grasses. III. Lolium loliaceum and L. rigidum. J. Genet. 37, 255. 10.1007/BF02982729 Google Scholar Johnson, L. P. V. (1946a). Fertilization in Ulmus with special reference to hybridization procedure. Canad. J. Res. C, 24, 1. 10.1139/cjr46c-001 PubMedWeb of Science®Google Scholar Johnson, L. P. V. (1946b). A note on inheritance in —F1 and F2, hybrids of Populus alba L. x P. grandidentata Michx. Canad. J. Res. 24, 313. 10.1139/cjr46c-029 Web of Science®Google Scholar Johnson, L. P. V. & Bradley, E. C. (1946). Hybridization technique for forest trees. Canad. J. Res. C, 24, 305. 10.1139/cjr46c-027 Web of Science®Google Scholar Johnson, L. P. V. & Heimburoer, C. (1946). Preliminary report on interspecific hybridization in forest trees. Canad. J. Res. C, 24, 308. 10.1139/cjr46c-028 PubMedWeb of Science®Google Scholar Jones, D. F. (1928). Selective fertilization. Chicago . Google Scholar Kincaid, R. R. (1949). Three interspecific hybrids of tobacco. Phytopathology, 39, 284. Web of Science®Google Scholar Lamprecht, H. (1941). Die Artgrenze zwischen Phaseolus vulgaris L. and P. multiflorus Lam. Her edit as, Lund, 27, 51. 10.1111/j.1601-5223.1941.tb03251.x Google Scholar Lamprecht, H. (1944). Die genisch-plasmatische Grundlage der Artbarriere. Agri. hort. genet, 2. 75. Google Scholar Lamprecht, H. (1949). The genie basis of evolution. Proc. 8th Int. Congr. Genet., Stockh., 1948. Suppl. vol., Her edit as, Lund , 55, 613 pp. Google Scholar Lasch, (1831). Beitrag zur Kentniss der Varietäten und Bastardformen einheimischer Gewächse Linnaea, 6, 484. Google Scholar Lehmann, E. (1944). Veronica filiformis Sm., eine selbsterile Pflanze. Jb. wiss. Bot. 91, 395. Google Scholar Linton, E. F. (1907). Hybrids among British phanerogams. J. Bot., Lond., 45, 268 and 296. Google Scholar Löve, D. (1944). Cytogenetic studies in dioecious Melandrium. Bot. Notiser, 1944, 125. Google Scholar Lynch, R. I. (1920). Hybrid cestrums. Gdnrs' Chron. 67, 220. Google Scholar Macarthur, J. W. & Chiasson, L. P. (1947). Cytogenetic notes on tomato species and hybrids. Genetics, 32, 165. CASPubMedWeb of Science®Google Scholar Manton, I. (1950). Problems of cytology and evolution in the Pteridophyta. London . 10.5962/bhl.title.4667 Google Scholar Marsden-Jones, E. M. (1930). The genetics of Geum intermedium Willd. haud Ehrh. and its back-crosses. J. Genet. 23, 377. 10.1007/BF03161433 Web of Science®Google Scholar Mahsden-Jones, E. M. & Turrill, W. B. (192849). Researches on Silene maritima and S. vulgaris. Kew Bull. Google Scholar Marsden-Jones, E. M. & Turrill, W. B. (1931). Species studies in plants. Rep. B. E. C., 1930, 416. Google Scholar Marsden-Jones, E. M. & Turrill, W. B. (1934). Further breeding experiments with Saxifraga. J. Genet. 29, 245. 10.1007/BF02982199 Google Scholar Marsden-Jones, E. M. & Turrill, W. B. (1935). Studies in Ranunculus. III. Further experiments concerning sex in Ranunculus acris. J. Genet. 31, 363. 10.1007/BF02982407 Google Scholar Marsden-Jones, E. M. & Turrill, W. B. (1937). Genetical studies on Centaurea scabiosa L. and Centaurea collina L. J. Genet. 34, 487. 10.1007/BF02982309 Google Scholar Marsden-Jones, E. M. & Turrill, W. B. (1938). Further interspecific Saxifraga hybrids. J. Genet. 36. 431. 10.1007/BF02982458 Google Scholar Marsden-Jones, E. M. & Turrill, W. B. (1944). Experiments on colour and heterostyly in the primrose, Primula vulgaris Huds. New Phytol. 43, 130. 10.1111/j.1469-8137.1944.tb05007.x Google Scholar Marshall, E. S. (1913). A new hybrid rock-rose. J. Bot., Lond., 51, 182. Google Scholar Marshall, E. S. (1914). A supplement to the flora of Somerset. Taunton . Google Scholar Martin, W. K. & Fraser, G. T. (1939). Flora of Devon. Arbroath . Google Scholar Mather, K. (1943). Polygenic inheritance and natural selection. Biol. Rev. 18, 32. 10.1111/j.1469-185X.1943.tb00287.x Google Scholar Mather, K. (1947). Species crosses in Antirrhinum. I. Genetic isolation of the species majus, glutinosum and orontium. Heredity, 1, 175. 10.1038/hdy.1947.12 Web of Science®Google Scholar Mayr, E. (1948). The bearing of the new systematics on genetical problems. The nature of species. Adv. Genet. 2, 205. New York. 10.1016/S0065-2660(08)60469-1 Web of Science®Google Scholar Michaelis, P. (1933). Entwicklungsgeschichtlich-genetische Untersuchungen an Epilobium. II. Die Bedeutung des Plasmas für die Pollenfertilität des Epilobium luteum-hirsutum-'Bastardes. Z. indukt. Abstamm. u. VererbLehre 65, 1 and 353. 10.1007/BF01848840 Google Scholar Moss, C. E. (1915). Notes on British plants. IV. Brunella laciniata x vulgaris. J. Bot., Lond., 53, 8. Google Scholar Moss, E. H. (1949). Natural pine hybrids in Alberta. Canad. J. Res. C, 27, 218. 10.1139/cjr49c-018 Web of Science®Google Scholar Muller, C. H. (1951). Ecological control of hybridization in Quercus: A factor in the mechanism of evolution. Proc. 7th Int. Congr. Bot., Stockh., 1950 (in the Press). Google Scholar Murray, R. P. (1896). The flora of Somerset. Taunton . Google Scholar Nilsson, N. H. (1930). Synthetische Bastardierungsversuche in der Gattung Salix. Acta Univ. lund., N. F. Avd. 2, Bd. 27, no. 4. Google Scholar Nishiyama, I. (1931). The genetics and cytology of certain cereals. II. Karyogenetic studies of fatuoid oats with special reference to their origin. Jap. J. Genet. 7, 49. 10.1266/jjg.7.49 Google Scholar Nordenskiöld, H. (1941). Cytological studies in triploid Phleum. Bot. Notiser, 12. Google Scholar Nordenskiöld, H. (1945). Cytogenetic studies in the genus Phleum. Acta Agric. Suecana, 1, 1. Google Scholar Nordenskiöld, H. (1949). Synthesis of Phleum pratense L. from P. nodosum L. Hereditas, Lund, 35. 190. 10.1111/j.1601-5223.1949.tb02869.x Web of Science®Google Scholar Nygren, A. (1948). Some interesting interspecific crosses in Calamagrostis and their evolutionary consequences. Hereditas, Lund, 34, 387. 10.1111/j.1601-5223.1948.tb02851.x Web of Science®Google Scholar Nygren, A. (1949). Apomictic and sexual reproduction in Calamagrostis purpurea. Hereditas, Lund, 35, 285. 10.1111/j.1601-5223.1949.tb02877.x Web of Science®Google Scholar Ostenfeld, C. H. (1928). The present state of knowledge on hybrids between species of flowering plants. Masters Lecture, 1927. J. Roy. Hort. Soc. 53, 31. Google Scholar Ownbey, M. (1950). Natural hybridization and amphiploidy in the genus Tragopogon. Amer. J. Bot. 37, 487. 10.1002/j.1537-2197.1950.tb11033.x Web of Science®Google Scholar Philp, J. (1933). The genetics of Papaver commutatum and its hybrids with Papaver rhoeas. J. Genet. 28, 169. 10.1007/BF02981772 Web of Science®Google Scholar Praeger, R. LI. (1930). Notes on Kerry plants. J. Bot., Land., 68, 249. Google Scholar Praeger, R. LI. (1934). The botanist in Ireland. Dublin . Google Scholar Pugsley, H. W. (1932). Limoniun paradoxum Pugsley. J. Bot., Lond., 70, 81. Google Scholar Riley, H. P. (1938). A character analysis of colonies of Iris fulva, I. hexagona var. giganticaerulea and natural hybrids. Amer. J. Bot. 25, 727. 10.1002/j.1537-2197.1938.tb12842.x Web of Science®Google Scholar Rollins, R. C. (1949). Sources of genetic variation in Parthenium argentatum Gray (Compositae). Evolution, 3, 358. 10.1111/j.1558-5646.1949.tb00036.x CASPubMedWeb of Science®Google Scholar Ross, J. G. & Duncan, R. E. (1949). Cytological evidence of hybridization between Juniperus virginiana and J. horizontalis. Bull. Torrey bot. CI. 76, 414. 10.2307/2482334 Google Scholar Roy, B. (1937). Chromosome numbers in some species and hybrids of Centaurea. J. Genet. 35, 89. 10.1007/BF02982317 Google Scholar Salisbury, E. J. (1916). The oak-hornbeam wood of Hertfordshire. Parts I and II. J. Ecol. 4, 83. 10.2307/2255327 Web of Science®Google Scholar Salisbury, E. J. (1918). The oak-hornbeam wood of Hertfordshire. Parts III and IV. J. Ecol. 6, 14. 10.2307/2255504 Web of Science®Google Scholar Salter, T. B. (1852). On the fertility of certain hybrids. Phytologist, 4, 737. Google Scholar Saunders, A. P. & Stebbins, G. L. Jun. (1938). Cytogenetic studies in Paeonia. I. The compatibility of the species and the appearance of the hybrids. Genetics, 23, 65. CASPubMedGoogle Scholar Scully, R. W. (1916). Flora of County Kerry. Dublin . Google Scholar Simonet, M. (1947). Les Iris et leur comportement aux points de vue systématique, génétique, cytologique, géographique et chimique. Arch. Klaus-Stift. Vererb.-Forsch. 22, 307. CASPubMedGoogle Scholar Skalinska, M. (1947). Polyploidy in Valeriana of ficinalis Linn, in relation to its ecology and distribution. J. linn. Soc. (L.), Bot., 53, 123. Google Scholar Smith, E. C. (1943). A study of cytology and speciation in the genus Populus L. J. Arnold Arbor., 34. 275. Google Scholar Smith, J. E. (1800). In Eng. Bot. vol. 10, tab. 693. Google Scholar Sprague, T. A. (1940). Taxonomic botany, with special reference to the angiosperms. In The new systematics, ed. J. S. Huxley. Oxford . Google Scholar Stebbins, G. L. Jun., Matzke, E. B. & Epling, C. (1947). Hybridization in a population of Quercus marilandica and Q. ilicifolia. Evolution, 1, 79. 10.1111/j.1558-5646.1947.tb02716.x Web of Science®Google Scholar Syme, J. T. B. (1867). English botany, 3rd ed., vol. 7, Labiatae to Amarantaceae. London . Google Scholar Towndrow, R. F. (1908). Worcestershire hybrids. J. Bot., Lond., 46, 364. Google Scholar Turrill, W. B. (1938a). Ecological isolation. Kew Bull., 1938, no. 384. Google Scholar Turrill, W. B. (1938b). Taxonomy and genetics. J. Bot., Lond., 76, 33. Google Scholar Turrill, W. B. (1942). Taxonomy and phylogeny. Part III. Bot. Rev. 8, 473. 10.1007/BF02881043 Google Scholar Turrill, W. B. (1948). British plant life. London . Web of Science®Google Scholar Vachell, E. & Blackburn, K. B. (1939). The Limosella plants of Glamorgan. Parts I and II. J. Bot., Lond., 77, 65. Google Scholar Valentine, D. H. (1947). Studies in British Primulas. I. Hybridization between primrose and oxlip (Primula vulgaris Huds. and P. elatior Schreb.). New Phytol. 46, 229. 10.1111/j.1469-8137.1947.tb05080.x Web of Science®Google Scholar Valentine, D. H. (1948). Studies in British Primulas. II. Ecology and taxonomy of primrose and oxlip (Primula vulgaris Huds. and P. elatior Schreb.). New Phytol. 47, 111. 10.1111/j.1469-8137.1948.tb05095.x Web of Science®Google Scholar Valentine, D. H. (1949). Vegetative and Cytological Variation in Viola riviniana Rchb. In British flowering plants and modern systematic methods, ed. A. J. Wilmott. London . Google Scholar Valentine, D. H. (1950). The experimental taxonomy of two species of Viola. New Phytol. 49, 193. Google Scholar Vickery, R. K. (1951). An experimental study of the races of the Mimulus guttatus complex. Proc. 7th Int. Congr. Bot., Stockh. 1950 (in the press). Google Scholar Vigurs, C. C. & Rilstone, F. (1932). Erica ciliaris L. and E. Watsoni Benth. in Cornwall. J. Bot., Lond., 73, 89. Google Scholar Webb, D. A. (1948a). The Robertsonian saxifrages of Galway and Mayo. Irish Nat. J. 9, 105. Google Scholar Webb, D. A. (1948b). Notes preliminary to a revision of the Irish dactyloid saxifrages. Proc. R. Irish Acad. 51, 233. Google Scholar Webb, D. A. (1950a). Hybridization and variation in the Robertsonian saxifrages. Proc. Roy. Irish Acad. 53, 85. Google Scholar Webb, D. A. (1950b). Account of Saxifraga (section Dactyloides Tausch) for biological flora of the British Isles. J. Ecol. 38, 185. 10.2307/2256538 Web of Science®Google Scholar Weiss, F. E. (1927). Some recent advances in our knowledge of inheritance in plants. Mem. Manchr lit. phil. Soc. 71, 75. Google Scholar Wernham, H. F. (1912). Floral evolution: IX. New Phytol. 11, 373. 10.1111/j.1469-8137.1912.tb05608.x Google Scholar White, J. W. (1912). The British flora. Bristol and London . Google Scholar Wiegand, K. M. (1935). A taxonomist's experience with hybrids in the wild. Science, 81, 161. 10.1126/science.81.2094.161 CASPubMedGoogle Scholar Winge, Ö. (1938). Inheritance of species characters in Tragopogon. A cytogenetic investigation. C. R. Lab. Carlsberg (S6r. Physiol.), 22, 155. Google Scholar Winge, Ö. (1940). Taxonomic and evolutionary studies in Erophila based on cytogenetic investigations. C. R. Lab. Carlsberg. (Sér. Physiol.), 23, 41. Google Scholar Winge, Ö. (1944). The Sambucus hybrid S. nigra x S. racemosa. C. R. Lab. Carlsberg (Sér. Physiol.), 24. 73. Google Scholar Wright-Smith, W. & Fletcher, H. R. (1948). The genus Primula: sections Cuneifolia, Floribundae, Parryi and Auricula. Trans, roy. Soc. Edinb. 61, 631. 10.1017/S0080456800019086 Google Scholar Citing Literature Volume26, Issue3August 1951Pages 302-336 ReferencesRelatedInformation