100 LEGUMINOS^E. (PULSE FAMILY.) 



# Stems taU and erect ; the persistent stipules and (deciduous) bracts large and con- 

 spicuous, ovate or ovate-lanceolate, taper-pointed: pods o/*4-7 unequal-sided rhom- 

 bic joints, u-hich are considerably longer than broad, 'about ' long. (Flowers 

 rather large.) 



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

 leaflefs 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 groups, Vermont to Michigan, Illinois, and southward. 

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

 glutinous hairs. 



7. I>. cuspid a turn, 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, smoothish. Thickets. 

 July. The conspicuous bracts and stipules f long. 



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

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

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

 dle-sized.) 



8. ]>. lii^vigiitiuii, 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. viridiflorwm, Beck. Stem very doivny, 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. I>. 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. I>. pailiculaluill, DC. Nearly smooth throughout; stem slender ; 

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

 long) ; racemes much panic-led. Copses, common. July. 



12. I>. Strict II 111, DC. Smooth; stem very straight and slender, simple; 

 leaflets linear, blunt, strongly reticulahd, thickish (l'-2'long, V 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 tnrintsfiiritons, mostly deciduous : pods <>f few roundish w 



obliquely oval or soi/H-fuiiex roundish-rhomboidal joints, l" to 2^" long. 

 - Stems erect: bracts before flom- ring conxi>i<-u<>ux: rui-cnn'* densely flowered, 



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

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

 lor>n<-r than the petiole (l'-3' long) ; Jl<n<rx slumy, larger tlnm in any other 

 species ('-1' long). Dry, rich woods, common, especially northward. Aug. 



14. D. sessilifolilim, Torr. & Gray. Stem pubescent (2 -4 high) ; 

 leaves nearly .ww/A .- h-njl<-tx linear or lim-ar-oblong, blunt, tliiekish, reticulated, 

 rough above, downy beneath; brandies of the panicle long ; .//'M/V/-.S- .<///. 

 Copses, Ohio and Miehig;m to Illinois and south\vard. Aug. 



