Studies in the Boraginaceae, XXIX. Echinochilon and related genera
1957; Arnold Arboretum of Harvard University; Volume: 38; Linguagem: Inglês
10.5962/bhl.part.9104
ISSN2474-3283
Autores Tópico(s)Plant and Fungal Species Descriptions
ResumoThe three genera here discussed, Megastoma, Sericostoma and Echiochilon, include a total of nineteen species endemic in the deserts of northern Africa (Senegal to Somaliland), Arabia, Iran, and Pakistan.Most of these species are rare or very local and subsequent to their original description have been mentioned only briefly and rarely, if at all, in the literature.The many unique or very uncommon features to be observed in the floral structure of these plants have been overlooked or unappreciated.The relationship of the three genera to the other members of the Boraginoideae is not clear.Although they have features prevailingly suggestive of a relationship among the Lithospermeae, in fruiting structures they are most like the Eritrichieae.Our genera seem to have no obvious direct relations with any of the Old World Boraginoideae.Surprisingly, they seem to be in greatest agreement with Amblynotopsis of Mexico and Antiphytum of southern Brazil and Uruguay.Preliminary work on the present report was carried on at the British Museum of Natural History, in the Herbarium at Kew, and in the Herbarium of the Natural History Museum in Paris during a visit to Europe in 1952.Through the kindness of those in charge, I was able to borrow selected specimens from these herbaria for detailed study at the Arnold Arboretum.Subsequently, recently accessioned new collections of Echiochilon at Kew and the British Museum have been sent me on loan for identification by Mr. E. Milne-Redhead and
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