520 



LEGUMINOSAE (PULSE FAMILY_) 



* * Stipules smaller, lanceolate and awl-shaped, less persistent ; racemes panicleA 



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

 or nearly so, procumbent ; leaflets ovate or 

 ovate-oblong, rathier obtuse, much smaller 

 than in the two preceding (3-6 cm. long) ; 

 corolla purple ; pods 2-4-jointed, flat, the oval- 

 rhomboid joints minutely scabrous through- 

 out. (Z). humifusum Beck ; Meibomia gla- 

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

 D. glabellam. 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 stipules and deciduous bracts 



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

 large. 



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

 broad {about 1.2 cm. long). 



7. D. canSscens (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. HiRStjTciM (Hook.) Robinson. Panicle 

 and upper part of the stem very villous ; leaflets oblong-ovate. (B. eanadense, 

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

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



8. D. bractebsum (Michx.) DC. Very smooth except the panicle ; stem 

 straight ; leaflets lanceolate-ovate and taper-pointed, green and glabrous on hoth 

 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. longifftlium (T. & 6.) Robinson. Stem with some persisting pubes- 

 cence ; leaflets scabrous above, villous beneath. (P. eanadense, var. T. & G. ; 

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



■(- -1- Pods of S-5 oval joints (not over 6 mm. long). 



9. D. illinofinse Gray. Erect, 1-2 m. high ; stem and leaves with short 

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



790. D. bracteosnm. 



