Stylosanthes 



Leguminosae 



603 



"To 



Map 1232 



Robima Pseudo- Acacia L. 



o "~ 50 



Map 1234 



Coronilla varia L 



specimen. The Lagrange County specimen was collected by Nieuwland 

 and is in the herbarium of the University of Notre Dame. 

 Nat. of Eu. ; escaped to roadsides and waste places. 



3802. STYLOSANTHES Sw. 



Stems without long, spreading hairs or only a few toward the summit; margins of 

 leaflets without long, hispid hairs or a few hairs on some of the leaflets near the 

 summit of the stem and in the inflorescence 1. <S. biflora. 



Stems more or less densely hispid with long, spreading hairs (rarely with only a few); 

 hairs 1-2 mm long, and flat at the base; margins of leaflets hispid with similar but 

 shorter hairs la. S. biflora var. hispidissima. 



1. Stylosanthes biflora (L.) BSP. Pencil-flower. Map 1235. Infre- 

 quent to rare in the southern counties on bare, open places on ridges 

 wooded with black and white oak. Found also in a few post oak flats 

 in the extreme southwestern counties. 



N. Y. to Kans., southw. to Fla. and Tex. 



la. Stylosanthes biflora var. hispidissima (Michx.) Pollard & Ball. 

 Plants of the variety are larger, erect or nearly so, and with longer leaf- 

 lets. My Crawford County specimen is from a dry woods near Wyandotte 

 Cave, and the Daviess and Knox County specimens are from sand hills. 1 

 have not ascertained the range of the variety. 



3807. DESMODIUM Desv. Tickclover 



Plants trailing; stem with long, spreading hairs; terminal leaflets orbicular, rounded 

 at the apex; stipules large, ovate, attenuate, the margins ciliate with long hairs, 



otherwise glabrous; peduncles terminal and axillary 1. D. rotundi folium. 



Plants erect or decumbent at the base; terminal leaflets not orbicular or rounded at 

 the apex. 

 Plants with leaves sessile or nearly so; leaflets linear or linear-oblong, reticulate 



beneath 2. D. sessilifolium. 



Plants not as above. 



