520 



LEGUMINOSAE (PULSE FAMILY) 



* * Stipules smaller^ lanceolate and awl-shaped^ less persistent ; racemes panicled. 



6. D. glabellum (Michx.) DC. Glabrous 

 or nearly so, procumbent ; leaflets ovate or 

 ovate-oblong, rather obtuse, much smaller 

 than in the two preceding ('-yS cm. long) ; 

 corolla purple ; pods 2— i-jonited, flat, the oval- 

 rhomboid joints minutely scabrous through- 

 out. (Z>. humifiisuni Beck ; Meibomia gla- 

 bella Ktze.) — Dry sandy soil, Mass. to s. Pa., 

 7S8. D. glabellum. Md., and south w. Fig. 788. 



§ 3. Pod slightly if at all stalked in the calyx; racemes panicled. 



* Stems tall (1-2 m. high) and erect; the persistent stiprdes and deciduous bracts 



large and conspicuous, ovate or ovate-lanceolate, taper-pointed ; flowers rather 

 large. 



•*- Pods of 4-7 unequal-sided rhombic joints, which are considerably longer than 



broad (about 1.2 cm. long). 



7. D. canescens (L.) DC. Stem loosely branched, hairy, branches clothed 

 with both minute and hooked as well as longer spreading rather glutinous 

 hairs ; leaflets ovate, bluntish, about the length of the petioles, whitish and 



789. D. canescens. 



reticulated beneath, both sides roughish with a close fine pubescence ; joints 

 of the pod very adhesive. {Meibomia Ktze.) — Dry chiefly sandy soil, Mass. to 

 Minn, and southw. Fig. 789. Var. hirsutum (Hook.) Robinson. Panicle 

 and upper part of the stem very villous ; leaflets oblong-ovate. (Z>. canadense, 

 var. Hook. ; D. canescens, var. villosissimum T. & G. ; Meibomia canescens, 

 var. hirsutn Vail.) — 111. and Mo. to Tenn. 



8. D. bracteosum (Michx.) DC. Venj smooth except the panicle; stem 

 straiglit ; U^aflets lanceolate-ovate and taper-pointed, green and glabrous on both 

 sides, longer than 

 the petiole ; the 

 conspicuous bracts 

 and stipules 1-1.5 

 cm. long ; joints of 

 the pod rhomboid- 

 oblong, smoothish. 

 (Z>. cuspidatum 

 Hook. ; Meibomia. 

 bracteosa Ktze.) — 

 Thickets, s. N. H. 

 to Minn., and 

 southw. Fig. 790. 



Var. longifblium (T. & G.) Robinson. Stem with some persisting pubes- 

 cence ; leaflets .scal)rous above, villous benc^atli. (D. canadense, var. T. & G. ; 

 Meibomia Jongifolia Vail.) — Mich, to Kan. and Ark. 



H- -t- Pods of 3-5 oval joints (not over (5 mm. hmg). 



\). D illinoense Gray. Erect, 1-2 ni. Iiigh ; stem and leaves with short 

 rough pubescence ; leaflets ovate-oblong or -lanceolate, 5-10 cm. long, obtuse, 



bracteosum. 



