( 2390 )- 
CyNANCHUM NIGRUM. ‘BLACK-FLOWERED 
CyNANCHUM, | 
Class and Order. 
Pentanpria Dieynia. 
Generic Character. 
Asclepiadea. Masse Pollinis leves, 10, pendule. Coro- 
na staminea duplex: exterior 10-partita: laciniis alternis 
os Cor. subrotata. Folliculi leves. Sem. comosa. 
ROWN. 
Specific Character and Synonyms. 
_ Cynancnum nigrum; caule superne volubili, corollis bar- 
batis, pedicellis umbelle simplicis pedunculo communi 
vix longioribus, corona sation. Brown Asclep. 
Mem. Wern. Soc. p. 48. Hort. Kew. ed. alt. 2. p. 78. 
Schultes Syst. Veg. 6. p. 103. : 
ANCHUM nigrum; caule superne subvolubili, foliis ovatis 
basi barbatis. Persoon Syn 1. p. 274. 
LEPIAs nigra; foliis ovatis basi barbatis, caule superne 
subvolubili. Lin. Sp. Pl. 315. Willd. 1. p. 1269. 
Fabr. Helmst. 254. Decand. Fl. Frang. 3. p. 668. 
Asctepras nigro flore. Bauh. Pin. 303. Lob. ic. 630. f. 2. 
_ Vinceroxicum flore nigro. Cam. Epit. 560. 
a 
_Mr. Brown, in his account of the natural order of Ascle- 
_Piadee, published in the Transactions of the Wernerian 
lety, has limited considerably the genus Cynancuum, 
and has divided it into sections, which, he observes, may 
Probably be considered hereafter as distinct genera. 
Our present plant belongs to his fifth section, containit 
also C. Vincetoxicum, and a nearly allied species whic 
he calls C. medium. a 
