Gleason: Centropogon and Siphocampylus 199 



perfectly with Planchon's figure and may prove, specifically 

 distinct. 



29. Siphocampylus reflexus Rusby, Bull N. Y. Bot. Gard. 4: 



403. 1907. 

 Siphocampylus elegans cordatus A. Zahlb. Bull. Torrey Club 



24:381. 1897. 

 Leaf-blades thin, ovate-lanceolate, with a long narrow acumi- 

 natum, distinctly cordate at base. 



2. Sepals ovate-oblong, erect or somewhat spreading; leaves acute to subacumi- 

 nate. 



30. Siphocampylus andinus Britton, Bull. Torrey Club 19: 



373. 1892. 



III. Corolla tubular, stout, conspicuously ventra'.ly curved, little or not at all con- 

 stricted at base, distinctly ampliate toward the throat, corolla-lobes with 

 broad bases, more or less oblique, and curved or directed anteriorly, the two 

 upper usually distinctly larger and broader than the three lower, the lowe r 

 fissures little if any deeper than the dorsal; fruit baccate, so far as known. 



A. Ventral anthers terminating in a tuft of loose hairs, dorsal anthers sparsely 



pilose; hypanthium distinctly urceolate; foliage and flowers strongly to- 

 mentulose; petals all about equal, broadly and obliquely triangular, acute; 

 filaments long-exserted; leaves petioled, the blades oblong-lanceolate, acute. 



31. Centropogon unduavexsis (Britton) A. Zahlb. Bull. 



Torrey Club 24: 374. 1897. 

 Siphocampylus unduavensis Britton, Bull Torrey Club 19: 

 373. 1892. 



B. Ventral anthers terminating in a stiff scale composed of united hairs; hypan- 



thium hemispheric to campanulate; foliage and flowers no* tomentulose; 

 at least the much smaller lower petals terminating in linear or subulate 

 strongly curved appendages. 

 1. Sepals linear to niangular, with broad flat sinuses; leaf-blades narrowly to 

 broadly oblong or obovate. 

 * Leaf-blades broadly oblong, almost entire. 



32. Centropogon yungasensis Britton. Bull. Torrey Club 19: 



371. 1892. 

 Leaves firm, glabrous; sepals triangular, distinctly shorter 

 than the hypanthium. 



** Leaf-blades narrowly oblong denticulate or crenate. 



33. Centropogon aggregatus (Rusby) comb. nov. 

 Siphocampylus aggregatus Rusby, Bull. N. Y. Bot. Gard. 8: 



122. 1912. 



