520 



LEGUMINOSAE (PULSE FAMILY) 



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



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

 or nearly so, procumbent ; leaflets ovate or 

 ovate-oblong, rather 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. (D. humifusum Beck ; Meibomia gla- 

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

 Md., and south w. FIG. 788. 



788. D. glabellmn. 



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. 



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

 broad (about 1.2 cm. long}. 



7. D. can6scens.(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. 780. Var. HIRSITI-M (Hook.) Robinson. Panicle 

 and upper part of the stem very villous ; leaflets oblong-ovate. (D. canad<>n*'\ 

 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 both 

 sides, longer than 

 the petiole ; the 

 conspicuous bracts 

 and stipules 1-1.5 

 cm. long ; joints of 

 the pod rhomboid- 

 oblong, smoothish. 

 (D. cuspidatum 

 Hook. ; Mfibnmhi 

 iirnrtt-nsa Ktze.) 

 Thickets, s. N. H. 

 to Minn., and 

 sMiithw. FIG. T'.HI. 



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

 cence ; leaflets scabrous above, villous beneath. (D. canadense, var. T. & G. ; 

 Meibomia longifoUa Vail.) Mich, to Kan. and Ark. 



t- H- Pods of 3-5 oval joints (not over 6 mm. long). 



!>. D. illinoSnse Gray. Erect, 1-2 m. high ; stem and leaves with short 

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



790. D. 



