100 LEGUMINOS^, (PXJLSE FAMILT.) 



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

 spicwms, ovate or ovate-lanceolate, taper-pointed : pods of i-1 unequal-sided rhom- 

 bic joints, which are considerably longer than broad, about J' long. (Flowers 

 rather large.) 



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

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

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

 adhosire. — Moist grounds, Vermont to Michigan, Illinois, and southward. 

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

 glutinous hairs. 



7. D. cuspidatum, 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 |' 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 

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

 dle-sized.) 



8. D. Isevig^atuill, r>C. Smoo?/i 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. viridifldriim. Beck. Stem very downy, rough at the summit; 

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

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



10. D. Dillfenii, Darlingt. Stem i:i\ibescant ; leaflets oblmig or oblong-oi'ate, 

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

 long). — Open woodlands, common. Aug. 



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

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

 long) ; racemes much paniclod. — Copses, common. July. 



12. D. Strictum, DC. SmootJi ; stem veiy straight and slender, simple ; 

 leaflets linear, blunt, strongly reticulated, thickish (1'- 2' long, ^' 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 J" long. 

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



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

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

 longer tluxn the petiole (l^'-3' long) ; _/?owers showy, larger than in any other 

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



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

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

 rough above, downy beneath; branches of the panicle long ; _/?oi(!ers small. — 

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



