﻿Plants collected in South America 497 



ASCLEPIADACEAE. 



Mitostie 



<3 



24 : 226. 1879. 



Sorata, 8000 ft, Feb., 1886 (no. 2517). 



Dr. Britton finds this plant to be the same as Mandon's no. 



357, which is thus named by Grisebach. 

 Mitostigma sp. (?) Material for disse 

 2000 ft., May, 1886 (no. 2544). 



t> 



Guanai, 



Amblyostigma pedunculate Benth. Hook. Icon. PL 12 : JJ. 



Mapiri, 2500 ft M 



M 



\g to Miss Vail, 

 the species was 



founded. 



Oxystelma solanoides (H.B.K.) K. Schum, in Eng. & Prantl 

 Nat. Pfl. Fam. 4* : 229. (Philibertia solanoides H.B.K Nov. Gen. 

 et Sp. 3 : 197. pi. 2jo.) Yungas, 4000 ft. 1885 (no. 1973). The 

 same as Bang's no. 18 15. 



Mat 



J 



Gothofrcda Bomb 



PL 420 



{Oxypctalum Dombcyanum Decaisne in DC. Prod. 8 : 583) Guanai, 

 2000 ft., May, 1886 (no. 934). The same as Bang's no. 1395. 



Aselepias nervosa Decaisne in DC. Prod. 8 : 568. {Fide Dr. 

 Britton.) Yungas, 6000 ft, 1885 (no. 935). 



Metastelma (Eumetastelma) Mathewsii sp. nov. 



Branches twining, elongated, slender, sparingly puberulent to- 

 ward the tip, green, terete, the internodes extremely variable in 

 length : petioles slender, 1 cm. or less long, flattened or slightly 

 channelled above, sparingly puberulent; blades 2.5-6 cm. long, 

 1-2 cm. broad, lance-oblong, the base obtuse to rounded, the apex 

 aristate, glabrous or sparingly short-pilose when young, deep 

 green, the midrib stout and very prominent underneath, the prima- 

 ries 10-12 unequal pairs, interconnecting two thirds of the way to 

 the margin : inflorescence pubescent ; peduncles mostly less than 

 5 mm. long, weak : flowers umbellate, 3-8, the pedicels minutely 

 short-bracted at the base, about as long as the peduncle and sim- 

 ilar to it : calyx 2-3 mm. broad, divided more than half way, the 

 lobes broadly ovate, acute, green with broad hyaline margins : cor- 

 olla greenish -white, open, campanulate, divided three fourths of 

 the way to the base, the lobes 3 mm. long, 1. 5 mm. broad, tri- 



