100 LEGUMINOS-E. (PULSE FAMILY.) 



* Stems tall and erect; the persistent stipules ami (deciduous) bracts large and con- 

 spicuous, ovate or ovate-lanceolate, taper-pointed : pods of 4 - 7 unequal-sided rhom- 

 bic joints, which are considerably longer tfian broad, about %' long. (Flowet* 

 rather large.) 



6. D. canescens, DC. Stem loosely branched (3 -5 high), hairy; 

 leaflets ovate, bluntish, about the length of the petioles, whitish and reticulated beneath, 

 both sides roughish with a close-pressed fine pubescence ; joints of the pod very 

 adhesive. Moist grounds, Vermont to Michigan, Illinois, and southward. 

 Aug. Branches clothed with minute and hooked, and long spreading rather 

 glutinous hairs. 



7. I>. CliSpidaLtlim, Torr. &. Gray. Very smooth throughout; stem 

 straight ; leaflets lanceolate-ovate and taper-pointed, green both sides ; longer than 

 the petiole (3' -5') ; joints of the pod rhomboid-oblong, smootbish. Thickets. 

 July. The conspicuous bracts and stipules f long. 



* * Stems (2 -5 high) erect: stipules as well as the bracts mostly deciduous, small 

 and inconspicuous : pods of 3-5 triangular or half-rhombic or very unequal-sided 

 rhomboida.1 joints, which are longer than broad, %' or less in length. (Flowers mid- 

 dle-sized. ) 



8. I>. lr\ ijjfftiUBi, DC. Smooth or nearly so throughout ; stem straight ; 

 leaflets ovate, bluntish, pale beneath (2' -3' long); panicles minutely rough- 

 pubescent. Pine woods, New Jersey and southward. 



9. D. viridifloriBlll, Beck. Stem very downy, rough at the summit; 

 leaflets broadly ovate, very obtuse, rough above, whitened with a soft velvety down 

 underneath (2' -3' long). S. New York and southward. Aug. 



10. D Dillenii, Darlingt. Stem pubescent; leaflets oblong or oblong-ovate, 

 commonly bluntish, pale beneath, softly and finely pubescent (mostly thin, 2' -3' 

 long). Open woodlands, common. Aug. 



11. D. paniculatum, DC. Nearly smooth throughout; stem slender; 

 leaflets oblong-lanceolate, or narroidy lanceolate, tapering to a blunt point, thin (3'- 5* 

 long) ; racemes much panicled. Copses, common. July. 



12. D. strictum, DC. Smooth ; stem very straight and slender, simple; 

 leaflets linear, blunt, strongly reticulated, thickish (l'-2'long, 4' wide) ; panicle 

 wand-like; joints of the pod 1-3, semi-obovate or very gibbous (only 2" long). 

 Pine woods of New Jersey, and southward. Aug. 



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



obliquely oval or sometimes roundish-rhomboidal joints, 1^" to 2 ;/ long. 

 H- Stems erect : bracts before flowering conspicuous: racemes densely flowered. 



13. D. CanadftJnse, DC. Stem hairy (3 -6 high); leaflets oblong- 

 lanceolate, or ovate-lanSeolate, obtuse, with numerous straightish veins, much 

 longer than the petiole ( l ; - 3' long) ; flowers showy, larger than in any other 

 species (' - J' long). Dry, rich woods, common, especially northward. Aug. 



14. D. sessilifoliiun, Ton-. & Gray. Stem pubescent (2 -4 high); 

 leaves nearly sessile ; leaflets linear or linear-oblong, blunt, thickish, reticulated, 

 rough above, downy, beneath; branches of the panicle long ; flowers small. 

 Copses, Ohio and Michigan to Illinois and southward. Aug. 



