Excerpt from Phytologia, Vol. 45 The Asclepiadaceae are a relatively large family with 250-320 genera and - t7oo-3000 species (see Rendle 1925, Willis 1931, Melchior 1964, Schill Jackal of which only about 45-50 genera and 200 species consti tute the Periplocaceae while the rest fall in the Asole piadaceae sensu stricto. A highly conservative estimate of the number of genera in the family is given by Airy Shaw (1973) as 130, but it has not been shared by any other taxonomic account of the family. The discrepancy concerning ...
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Excerpt from Phytologia, Vol. 45 The Asclepiadaceae are a relatively large family with 250-320 genera and - t7oo-3000 species (see Rendle 1925, Willis 1931, Melchior 1964, Schill Jackal of which only about 45-50 genera and 200 species consti tute the Periplocaceae while the rest fall in the Asole piadaceae sensu stricto. A highly conservative estimate of the number of genera in the family is given by Airy Shaw (1973) as 130, but it has not been shared by any other taxonomic account of the family. The discrepancy concerning the number of genera and species reflects an unstable taxonomic situation within the family and it can easily be felt that both generic and specific concepts in the Asclepiadaceae are far from satisfactory. It is also noticeable that the distribution of the species among the genera is highly uneven. Thus all the genera listed by Airy Shaw (1973) have been surveyed together with their reported numbers of species and it has been found that there are no less than 123 mono-specific genera (i.e. 118 enera (i.e. 37 each with 2-10 species, and only 12 genera (5 take in about 1800 species (i.e. Approx. 60 of all the species in the family). About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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