Blake — New Plants of the Genus Stylosanthes . 49 



flowers evidently yellow; banner broadly obovate, 5 mm. long, 4 mm. 

 wide; basal joint of pod usually minute; terminal joint oblong or quad- 

 rate-oblong, 3.5 mm. long, 2.2 to 2.5 mm. wide, compressed, 1-ribbed and 

 reticulate laterally, rather sparsely hispidulous-pilosulous; beak rather 

 slender, erectish, slightly hooked at tip, hispidulous toward base, 1.4 to 

 1.7 mm. long. 



Type in the U. S. National Herbarium, no. 849255, collected at South- 

 west Landing, New Providence, Bahama Islands, February 11, 1905, by 

 E. G. Britton (no. 3336). 



Other specimen examined: 



Cuba: Vicinity of Pueblo Romano, Cayo Romano, Camaguey, Octo- 

 ber 8-9, 1909, Shafer 2463. 



Stylosanthes tuberculata is nearly related to 5. hamata (L.) Taubert, 

 and both the collections above cited were distributed under that name. 

 In 5. hamata, however, the stem is pilose in lines (or all around on the 

 uppermost internodes), without the tuberculate-based hairs of the new 

 species, the bracts are often hispid but the hairs are not tuberculate-based, 

 and the beak equals or usually exceeds the terminal joint of the pod. 



Stylosanthes diarthra, sp. nov. 



Frutescent, much branched, ascending, 3.5 dm. long or more; stem 

 gray-barked, glabrescent; branches subterete, pilose with appressed or 

 ascending hairs and sparsely or rather densely short-hispid; leaves about 

 equaling the internodes, 3-foliolate; sheaths of the stipules 4 to 7 mm. 

 long, sparsely appressed-pubescent and rather sparsely hispid-pilose with 

 short tuberculate-based hairs, the teeth linear-subulate, sparsely hispid- 

 pilose, 3 to 4 mm. long; petioles densely hispidulous-puberulous, 3 to 4 

 mm. long, the rachis 1 mm. long; leaflets elliptic or obovate-elliptic, 6 

 to 12 mm. long, 2 to 4.5 mm. wide, acute, mucronate, rounded at base, 

 subsessile, subentire or usually obscurely denticulate with tuberculate- 

 hispidulous teeth, above sparsely hispid with short hairs with persistent 

 dark-colored tuberculate bases, beneath hispidulous especially along 

 costa, the 3 or 4 pairs of lateral veins prominulous beneath; spikes ovoid, 

 8 to 12 mm. long, obscurely short-hispid, 7 to 10-flowered; primary bracts 

 unifoliolate, pilose and ciliate, short-hispid-pilose with more or less spread- 

 ing hairs with much enlarged ovoid bases, the sheath 4 to 6 mm. long, 

 the teeth 2.5 to 3.5 mm. long, the blade 4 to 5.5 mm. long; secondary 

 bract 1, 2-lobed for about two-fifths its length, 3.3 mm. long, the lobes 

 acuminate, sparsely ciliate; axis rudiment linear-subulate, sparsely long- 

 pilose, 1.5 mm. long in flower, 3.5 mm. in fruit; bractlets 2, lance-linear, 

 acutish, sparsely ciliate at tip, 2.5 mm. long; calyx 7 to 8 mm. long (in- 

 cluding the 5 mm. long stipe-like base), ciliate, otherwise glabrous, the 

 lowest lobe longest and acute, the others all obtuse; banner obovate- 

 suborbicular, scarcely clawed, 5.5 mm. long, 4.5 mm. wide; lateral petals 

 clawed, auriculate, spurred within at base of blade; fruit usually 2-celled 

 with both cells subequal and fertile, the lower joint quadrate-oblong, 2 



