196 GLEASON: CENTROPOGON AND SIPHOCAMPYLUS 
13. SIPHOCAMPYLUS WILLIAMSII Rusby, Bull. N. Y. Bot. Gard. 
S: 122: 1912. : 
|| || Leaf-blades lanceolate to ovate-lanceolate, petioled, membranous, sharply and 
irregularly spinulose, 8-12 cm. long. 
14. SIPHOCAMPYLUS BOLIVIENSIS A. Zahlb. Ann. K. K. Natur- 
hist. Hofmus. Wien 6: 443. 1891. 
Sepals equaling or barely exceeding the subglobose hypanthium; 
stems stout; leaves firm, brownish and scabrously pubescent be- 
neath. 
15. SIPHOCAMPYLUS DuBIUS A. Zahlb. Bull. Torrey Club 24: 
385. 1897. 
Sepals longer than the depressed-hemispheric hypanthium ; 
stems slender; leaves thin, green and puberulent on the veins 
beneath. 
Tt Peduncles short, equaling or shorter than the flowers, which do not surpass the 
ubtending leaves; hypanthium turbinate; sepals linear, nes) leaf-blades 
oblong, short-petioled; stems climbin 
16. SIPHOCAMPYLUS MEMBRANACEUS Britton, Bull. Torrey Club 19: 
S72. 1892. 
Leaves thin, membranous, sharply spinulose-dentate, veiny; 
peduncles equaling the corolla. 
17. SIPHOCAMPYLUS OBLONGIFOLIUS Rusby, Mem. Torrey Club 
6:73. 18096 
Leaves firm, minutely and remotely spinulose; peduncles 
shorter than the corolla. 
** Sepals narrowly triangular, shorter than the hypanthium. 
18. SIPHOCAMPYLUS CORREOIDES A. Zahlb. Bull. Torrey Club 
24: 382. 1897. 
Foliage and flowers tomentuloae: leaf-blades “aateo ovate, 
upculate ane pine aepticulats, 15-25, mm Po 
or somewhat + urceciat te; sepals about equaling the hy panthium, distant, with 
rounded sinuses; leaf-blades sharply and saliently serrate, of an ovate type, 
firm, dull-green. 
it. 
19. SIPHOCAMPYLUS CORYMBIFERUS Pohl. Plant. Brasil. 2: 112. 
pt..275.: 1831. 
Lobelia corymbifera Presl, Prodr. Monogr. Lobel. 37. 1836. 
Siphocampylus gracilis glabris Britton, Bull. Torrey Club 19: 
374. 1892. 
Leaves glabrous. 
