﻿Vol. 25 



No. 4 



BULLETIN 



OF THE 



TORREY BOTANICAL CLUB 



APRIL 1898 



Studies in the Asclepiadaceae. — III. 



By Anna Murray Vail. 



I -DESCRIPTIONS OF NEW SPECIES. 



ASCLEPIAS SCAPOSA. 



Minutely rough-puberulent with short, often curved hairs. 

 Stems 1 -several from the same fusiform tuberous root, apparently 

 simple, 3-4 cm. high : leaves opposite, crowded, 3-4.5 cm. long; 

 blades oblong-lanceolate, acutish at each end, sessile, coriaceous, 

 pubescent with short scattered roughish hairs : peduncles solitary, 

 terminal, 6-7 cm. long, about twice longer than the stem, terete, 

 pubescent with spreading whitish hairs ; pedicels 2 cm. long : fol- 

 licels erect on recurved pedicels, 6 cm. long, linear-fusiform, 

 pubescent. Flowers and seeds not seen. 



New Mexico, near Santa Rita, Wright, 1851-52; mounted 

 with no. 1684 in Herb. Columbia University and on the same 

 sheet with no. 1683 in Herb. Gray. 



In general aspect and foliage bearing a close resemblance to 

 some of the species of Dr. Greene's new genus Podostcmma, but 

 differing from them by the very long, solitary, terminal peduncle. 

 The discovery of the flowers may prove it to belong to that genus. 



ASCLEPIAS PaLMKKI. 



Cinereous-tomcntulose up to the inflorescence. Stems several 

 from the same root : internodcs about the length of the leaves : 

 leaves opposite, 1-3 cm. long, 2 mm. wide; blades linear, acumi- 



[Issued 12 April.] ( 171 ) 



