LEGUMINOSAE (PULSE FAMILY) 



521 



791. D. illinoense. 



793. D. viridiflorum. 



subcoriaceous, cinereous beneath, veins and vein- 

 lets prominent, strongly reticulated, the lower 

 leaflets nearly equaling the petiole ; pods scarcely 

 over 2. 5 cm. long, sinuate on both margins (more 

 deeply below). (Meibomia Ktze.) Dry ground, 

 Lakeside, 0. (Moseley) ; Jackson Co., Mich. 

 (Wheeler)', 111. to Neb., Kan., and Okla. FIG. 791. 



* * Stem 6-15 dm. high, erect ; stipules and bracts mostly deciduous, small and 



inconspicuous,' joints of the pod 3-5, triangular or half-rhombic or very 

 unequal-sided and rhomboidal, longer than broad, 6 mm. or less in length ; 

 flowers middle-sized. 



10. D. laevigatum (Nutt.) DC. /Smooth or nearly, so throughout ; stem 

 straight ; leaflets ovate, bluntish, pale beneath, 5-7.5 cm. long, thin and 

 without prominulous reticulation ; panicles mi- 

 nutely rough-pubescent. (Meibomia Ktze.) Pine 

 woods, s. N. Y. and N. J. to Fla., Mo., and Tex. 

 FIG. 792. From Va. southw. passing to D. RHOM- 

 BiF6nuM (Ell.) DC., a more pubescent plant, 

 with thickish leaves, the veins 

 prominulous beneath. (Mei- 

 bomia Vail.) 



11. D. viridifl6ram (L.) 792 D laevigatum . 



Beck. Stem very downy, rough 



at the summit ; leaflets broadly ovate, very obtuse, rough 

 above, whitened with a soft velvety down underneath, 

 6-7.5 cm. long. (Meibomia Ktze.) Dry open woods, 

 common, s. N. Y. to Fla., Mich., Mo., and Tex. FIG. 

 793. 



12. D. Dilldnii Darl. Stem pubescent ; leaflets oblong or oblong-ovate, 

 commonly bluntish, pale beneath, softly and finely pubescent, mostly thin, 5-7.5 

 cm. long. (Meibomia Ktze.) Open woodlands, centr. Me. 



to Ont., Minn., and southw. FIG. 794. 



13. D. paniculatum (L.) DC. Essentially smooth 

 throughout ; stem slender, tall ; leaflets oblong-lanceolate, 



tapering to a blunt 



point, thin, 7.5-12.5 



cm. long ; racemes 



much panicled. (Mei- 

 bomia Ktze.) Copses, 



s. w. Me. to Ont., 



Minn., and southw. 



FIG. 795. 



Var. angustifblium T. & G. Leaflets 



narrower, lance-linear. (Meibomia pani- 

 culata, var. Chapmani Britton.) Va., Ky., and southw. 



Var. pubens T. & G. Stem puberulent ; leaves sparingly pubescent beneath. 

 (Meibomia paniculata, var. Vail.) N. J. to Kan., and southw. 



14. D. strictum (Pursh) DC. Stem very straight and slender, simple, 

 6-9 dm. high, the upper part and narrow panicle rough- 

 glandular ; leaflets linear, blunt, strongly reticulated, thickish, 



very smooth, * 2.5-5 cm. long, 6 mm. wide ; joints of the 

 pod 1-3, semi-obovate or very gibbous, only 4 mm. long. 

 (Meibomia Ktze.) Pine woods, N. J. to Fla. and La. 

 FIG. 796. 



* * * Stipules small and inconspicuous, mostly deciduous ; pods of few roundish 



or obliquely oval or sometimes roundish-rhomboidal joints 3-5 mm. long. 



*- Stems erect; bracts before flowering conspicuous ; racemes densely flowered. 



15. D. canadense (L.) DC. Stem hairy, 5-15 dm. high ; leaflets oblony- 



794. D. Dillenii. 



795. D. paniculatum. 



796. D. strictum. 



