478 



NOTES OX CRASSULA. 



year was travelling with Thunberg,* so that his gatherings were 

 doubtless to a considerable extent identical with Thunberg's. 



A considerable number both of Thunberg's and of Alton's 

 Crassulas are relegated by Harvey to an appendix of " species 

 unknown to us." Why the British Museum Herbarium was not 

 consulted by Harvey it is not easy to explain ; the neglect is 

 rendered more serious by the recent action of Dr. Schonland, who, 

 in his paper on " Some new species of Crassiila from South Africa,"! 

 justifies Harvey's action in the ignoring of "incompletely charac- 

 terized species of older authors." "I regret," says Harvey (Fl. Cap. 

 ii. 332) "being obliged to leave so many species of older authors 

 undetermined ; but as most of them have been named in gardens, 

 have never been figured, are not contained in any Herbarium, and 

 have been scarcely more than indicated by the curt descriptive 

 phrases of Haworth, it is quite impossible to make them out 

 satisfactorily." We have already noted that Harvey overlooked 

 the full descriptions of Thunberg in the Nova Acta ; it is to be 

 hoped that Dr. Schonland will consult these and the plants in the 

 National Herbarium before he publishes further papers on Orassuta. 



It may be well in the first instance to give a list of the twenty- 

 'eight species, with references to the original description and to 

 their position in the Index Kewensis. We have arranged the names 

 alphabetically for convenience of reference. 



See Joum. Bot. 1884, 115. 



t Journ, Linn. Soc. (Bot.), xxxi. 546. 



