440 DECANDRIA. MONOGYNIA. cassia. 



Root annual. Stem about a foot high, erect or pubescent, much 

 branched, covered with a minute appressed pubescence. 

 J.eaves in 12 — 15 pairs, somewhat sensitive, as in the rest of 

 the genus, linear-oblong, oblique at the base, obtuse, mucro- 

 nate ; stifiules in pairs, subulate ; gland cup-shaped, slightly 

 pedicellate. Flowers in lateral bracteate fascicles above 

 the axils, often in pairs^ but som^imes in fours; fiedicels 

 nearly an inch long, with 2 subulate bracts a little below the 

 flower. Calyx coloured, tv/o-tbirds as long as the corolla, lan- 

 ceolate, attenuate to a fine point. Petals bright yellow, obo- 

 vate, 2, and sometimes 3 of them, with a purple spot at th6 

 base. Siamens unequal, all of them fertile; anthers very long, 

 almost sessile; 4 of them yellow, the rest purple. Germcjt 

 villous; sn//p filiform, smooth ; stigma s\m\i\e. Zfj^u7?ze flat- 

 tened, about 2 inches long, sprinkled with short hairs, 



Hab. On the sides of hills and in sandy fields. June— August. 

 Sensitive-pea or Magoty-bay-bean, 

 This is a very common species in New-Jersey, frequently 

 covering whole fields. 



3. C. 'tiictilans L. : stem spreading, pubescent; leaves in 

 many pairs, linear; gland on tiie petiole pedicellate; pedun- 

 cles fasciculate^ few-flowered ; flowers pentandrous ; stamens 

 equal. Wind. Spec. II. p. 529. M ich. Fl. I. p. 262. 

 PwrsA i^Z. I. p. 306. E I li o 1 1 Sk. I. ^. Al^. Walt. 

 Car, p. 135. P Ink. Aim. 341. t. 314. f. 5. 



Root annual. Stem about a foot high, erect or procambent,much 

 branched, slender. Leaves in 14 — 18 pairs, small, linear-ob- 

 long, mucronate, oblique at the base ; gland near the base of 

 the common petiole, cup-shaped, on a distinct slender pediceL 

 Flowers very small above the axils. Calyx sometimes 4-leav- 

 ed; leaves ovate-lanceolate, acuminate. Pf/a/s dark yellow, 

 obovate. Stamens all fertile; ara;/;ers large, truncate. Ger^ 

 men villous ; style short, thickened at the extremity. Legume 

 hairy. 



Hab. In sandy fields. Abundant on Long-Island, Sec. 



Sensitive-fieOo 



4. C. fascicvlata M i c h„ : nearly smooth ; leaves at the 

 summit in 9 pairs ; gland sessile near the middle of the pe- 

 tiole ; fascicles lateral, many-flowered ; petals and stamens 

 of the same colour; legume smooth. Mich. Fl. l.p. 262, 

 Pursh Fl. I. p. 30G. Elliott Sk. \. p. 471. 



Flowers smaller than in C. C/tamacrista. Legume curved, as- 

 cending. Mich. 



Hab. In dry fields. New-York to Carolina. Pursh. In 

 Pennsylvania. Mxi hUnb erg, June — August- 



