314 REVISION OF EXTRA-TROPICAL SOUTH AFRICAN ASCLEPIADACE^. 



glossum E. Mey. and Asclepias L. ; the former being a purely African 

 genus with about one hundred species, of which seventy are South 

 African, and these, with the exception of only eight species, all 

 south-eastern. The genus Asclepias has representatives almost over 

 the whole world, but its species nowhere reach such splendour as 

 in the South African Pac/u/carpl, some of which, e.g. A. ffiandi- 

 fiora L. f., A. linearis Schltr., A. insiynis Schltr., A. Schinziana 

 Schltr., and A. ve.dllata Schltr., well deserve to be introduced into 

 European gardens. 



In conclusion, I have to treat a few purely systematic points. 

 I have united the two genera Ectadiopsis Bth. and Cryptolejns R.Br., 

 there being no distinctive characters whatever to keep them sepa- 

 rated. C. uhtusa N. E. Br. is, for instance, very nearly allied to 

 C. transvaaleiisis Schltr., which in floral characters cannot be 

 generically separated from the type of Bentham's genus Ectadiopsis. 

 I fear, too, that Cnrroria Planch, may have to go to Cryptolepis, 

 as it is closely allied to C. Montcirom Oliv., through which species it 

 is well connected with the typical Cryptolepids. However, the 

 latter is a question which hardly concerns us at present, since 

 Curroria decidua Planch., the only species of the genus, has not 

 been found as yet within our boundary. As ray views respecting 

 Hciemax E. Mey. and (j-omphocarpus H. Br. have been already pub- 

 lished, it is needless to repeat them. 



In the following list the genera are enumerated according to 

 Prof. Schumann's work on the Asclepiadacca; in Engler & Prantl's 

 Nati'irliche Pjianzenfamilien. Small alterations have been made 

 where they were deemed necessary, especially in cases where my own 

 genera were concerned. Another little modification I have undertaken 

 in shifting the Ccropeyinia; to the end of the Ti/luphorece, as through 

 the presence of the hyaline anther-appendage the Marsdeniacece 

 seem to approach more towards the Asclepiadeie. 



Suborder I. — Periplocoide.e. 



I. Chlorocodon Hk. f. in Bot. Mag. t. 5898 (1871) ; Bth. & Hk. f. 

 Gen. PI. ii. 745 (1876). 



1. C. WniTEiHk.f. I.e. 

 Natal. 



II. Taccazea Dene, in DC. Prodr. viii. 492 (1844). 



1. T. Welwitschii Baill. in Bull. Soc. Bot. Par. ii. (1891) 897. 

 Zululand. 



III. Chlorocyathus Oliv. in Ic. PI. t. 1557 (1887). 



1. C. MONTEIRO.E Oliv. I.e. 



Delagoa Bay. 



IV. EcTADiuM E. Mey. Com. PI. Afr. Austr. 188 (1837); Dene, in 

 DC. Prodr. viii. 500 (1844) ; Bth. & Hk. f. Gen. PI. ii. 742. 



1. E. viRGATUM E. Mey. I. c. ; Dene. I. e. 



Little Namaqualand. 



