Areole Dimorphism in Coryphantha
1961; Wiley; Volume: 48; Issue: 7 Linguagem: Inglês
10.2307/2439372
ISSN1537-2197
Autores Tópico(s)Botanical Research and Applications
ResumoAmerican Journal of BotanyVolume 48, Issue 7 p. 593-603 Article AREOLE DIMORPHISM IN CORYPHANTHA Norman H. Boke, Norman H. Boke Department of Botany and Microbiology, The University of Oklahoma, Norman, OklahomaSearch for more papers by this author Norman H. Boke, Norman H. Boke Department of Botany and Microbiology, The University of Oklahoma, Norman, OklahomaSearch for more papers by this author First published: 01 August 1961 https://doi.org/10.1002/j.1537-2197.1961.tb11686.xCitations: 9AboutPDF 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 onFacebookTwitterLinkedInRedditWechat Abstract Boke, Norman H. (U. Oklahoma, Norman.) Areole dimorphism in Coryphantha. Amer. Jour. Bot. 48(7): 593–603. Illus. 1961.—Coryphantha clava and C. erecta have both grooved and grooveless tubercles. The latter occur on young plants and emergent branches and may occur mixed with grooved tubercles on adult shoots, especially in C. erecta. Grooved tubercles have monomorphic areoles and are the only ones which bear flowers. The dimorphic areoles on grooveless tubercles develop exactly as in the mammillarias. In both species capitate glands occur in the axils of most tubercles and may occur at any position along an areole groove. The glands are initiated by the areole meristem in the same manner as spines, with which they are homologous. Close relationship between the 2 species is substantiated by both ectomorphic and endomorphic characters. The possession of both monomorphic and dimorphic areoles may mean that these cacti are evolving toward the complete areole dimorphism manifested by the mammillarias. Citing Literature Volume48, Issue7August 1961Pages 593-603 RelatedInformation
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