100 LEGUMINOSiE. (PULSE FAMILY.) 



*= Steins tall unci erect ; the persistent stipules and (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 than broad, about £' long. (F lowers 

 rather large.) 



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

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

 botli 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. H. Clispidatum, Ton-. & 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. (Floicers mid- 

 dle-sized. ) 



8. D. laevigatmai, 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. viridiflontm, Beck. Stem very downy, rough at the summit; 

 leaflets broadly ovate, very obtuse, rough above, whitened ivith a soft velvety doum 

 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. paaiicillatuill, DC. Nearly smooth throughout; stem slender , 

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

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



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

 leaflets linear, blunt, strongly reticulated, thickish (V - 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. 



* * * Stipides small and inconspicuous, mostly deciduous : pods of few roundish or 



obliquely oval or sometimes roundish-rhomboidal joints, l£" to 2^" long. 

 -v- 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 straightisli veins, much 

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

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



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

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

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

 Copses, Penn. and Michigan to Blinois and southward. Aug. 



