52 Proceedings of the Biological Society of Washington. 



Additional specimens examined: 



Florida: Dry pine barrens near Jacksonville, June 17, 1898, Cartiss 

 6418 (in part). 



Stylosanthes floridana is closely related to S. biflora (L.) B. S. P. It may 

 be distinguished by the lack of hispidity on the heads and the stem. The 

 fruit, also, is much more strongly nerved and reticulate than is often the 

 case in 5. biflora. 



Stylosanthes macrosoma, sp. nov. 



SufTrutescent below, the branches erect, with erect branchlets, 1.8 dm. 

 high, rather sparsely spreading-hispid-pilose with pale scarcely tubercu- 

 late-based hairs, and in youth somewhat appressed-pubescent; leaves 

 shorter than the internodes, 3-foliolate; sheaths of the stipules 5 mm. 

 long, like the teeth rather sparsely spreading-hispid-pilose, the teeth 

 slender-subulate, stiff, 2.5 to 4 mm. long; petioles sparsely spreading- 

 hispid-pilose, somewhat puberulous above, 3 to 6 mm. long, the rachis 

 about 1 mm. long; leaflets slightly petiolulate, linear-elliptic, 8 to 14 mm. 

 long, 1 to 2 mm. wide, acute, mucronate, rounded at base, firm, green 

 both sides, rather sparsely spreading-hispid-pilose on costa and margin, 

 the veins whitish, 3 or 4 pairs, prominent beneath, forming a submarginal 

 nerve; spikes oblong to ovoid, 6 to 10 mm. long, not densely hispid-pilose, 

 about 7-flowered; primary bracts unifoliolate, otherwise similar to the 

 leaves, ciliate and sparsely spreading-hispid-pilose, the sheath 4 mm. long, 

 the teeth 2.5 mm. long, the linear-elliptic petiolulate blade 4.5 mm. long 

 or less; secondary bracts 2, linear-lanceolate, acutish, ciliate, 3 to 3.5 

 mm. long; axis rudiment none; bractlet 1, linear, obtusish, ciliate, 1.2 to 

 2.5 mm. long; calyx 5 mm. long (including the glabrous 3 mm. long stipe- 

 like base), the lobes all obtuse, ciliate, otherwise glabrous; banner obovate, 

 4.5 mm. long, 2.5 mm. wide; lower joint of pod sterile, narrowly oblong, 

 densely pilosulous, 1.5 mm. long; upper joint at full maturity oblong, 

 4.8 mm. long, 2.2 mm. wide, strongly compressed, glabrous, very weakly 

 2-veined on the sides, whitish, the strongly incurved hispidulous beak 2.2 

 mm. long. 



Type in the U. S. National Herbarium, no. 1012417, collected in cen- 

 tral Paraguay, 1888 to 1890, by T. Morong (no. 255). 



This strongly marked new species was distributed as 5. guyanensis 

 (Aubl.) Swartz. It is distinguished from that and all other species of 

 its section (Eustylosanthes) by the characters of its fruit. 



Stylosanthes purpurata, sp. nov. 



Base not seen; stem frutescent below, branched, 3.5dm. long and more, 

 fuscous-purplish, rather densely ascending-pilose (the hairs denser in lines 

 decurrent from the leaf-bases) and pilose-setose with slender spreadins 

 tuberculate-based at length deciduous dark hairs; leaves (except on the 

 branchlets) much shorter than the internodes, 3-foliolate; sheaths of the 

 stipules 3 to 6 mm. long, purplish, pubescent like the stem, the teeth 

 subulate, setose-tipped and setose-ciliate, 3 to 4.5 mm. long; petioles pil- 



