LEGUM 1 NOS 3. 79 



13. PHACA. Linn. Bastard Vetch. 

 (From the Greek <S>aicos, lentils.) 



Calyx 5-toothed or 5-cleft ; the two upper teeth a little dis~ 

 tant from each other. Keel obtuse. Legume usually turgid 

 or inflated, 1 -celled, the upper suture somewhat tumid. 



P. negkcta Tarr. tf- Gr, : nearly smooth ; leafets 6 10 pairs, elliptic, 

 smooth above, pubescent with appressed hairs beneath ; stipules triangular 

 ovate ; peduncles about as long as the leaves ; spikes oblong, many-flow- 

 ered; calyx campanulate; legume sessile, globose, ovate, pointed. 



Gravelly banks and sandy woods. Western N. Y. to Wisconsin. June, 

 July. %. Stem 1 2 feet high, rather slender, sparingly branched. Flowers 

 15 25 in a spike, white. Resembles Astragalus Canadensis, but has shorter 

 and looser spikes, white flowers, and a campanulate calyx. Bastard Vetch. 



14. STYLOSANTHES. Swartz. Pencil Flower. 



(From the Greek srwAo?, a column, and wQos, & flower ; the flowers appearing 

 stipitate.) 



Tube of the calyx very long, slender ; limb 5 -parted, lobes 

 unequal. Corolla inserted in the throat of the calyx. Keel 

 minute, bifid at the apex. Stamens monadelphous. Style fili- 

 form, very long, straight. Stigma capitate, hispid. Legume 

 with 1 2 joints; joints 1 -seeded; the apex subuncinate, acu- 

 minated into the base of the style. 



S. elatior Swartz : stein erect, herbaceous, pubescent on one side ; leaves 

 ternate ; leafets lanceolate, smooth, acute ; bracts lanceolate, hispid-ciliate ; 

 spikes few-flowered ; legume 2-jointed, the lower joint sterile and stipitate. 

 S. hispida Mich. Arachis aprica Walt. 



Sandy woods. N. Y. to Flor. W. to Ala. and Ark. July, Aug. %.Stem 

 a foot high, branched at the top. Flowers yellow, in terminal compact heads. 

 Legume 1-seeded, hooked at the summit. Pencu Flower. 



15. ^SCHYNOMENE. Linn. ^Eschynomene. 

 (From the Greek atsxvvopai, to be bashful; in allusion to its sensibility.) 



Calyx 5-cleft, bilabiate ; upper lip 2-cleft or 2-toothed ; lower 

 one 3-cleft, or 3-toothed. Corolla papilionaceous. Stamens 

 10, in two equal sets. Legume compressed, transversely jointed, 

 erect, exsert ; joints 1-seeded. 



JE. hispida Willd. : stem herbaceous, erect, and with the petioles and 

 peduncles hispid ; leaves in many pairs ; leafets linear, obtuse ; racemes 

 simple, 3 5-flowered ; legume distinctly stipitate, with G 9 hispid joints. 

 Hedysarum Virginicum Linn. 



Marshes. Penn. to Flor. July, Aug. (.Rtem 23 feet high- Leafets 

 20 35 pairs. Flowers yellow and red. Hiqpid JKichjinomem; 



