LEGUMINOS.E. 91 



in any American species, being from 1 1-2 2 inches long and 1 

 broad, and very strikingly glaucous on the under side. The 

 flowers also are large and pale yellow. It was first noticed by 

 my lamented friend, the late Rev. John De Witt, D. D. of Rutgers 

 College, who was adding to his other attainments, a knowledge 

 of the botanical productions of the interesting region around 

 New-Brunswick. 



22. AMPHICARPA. De Cand. 



Calyx campanulate, 4-toothed, without bracts at base ; 

 teeth equal, somewhat obtuse. Carol papilionaceous. Pe- 

 tals oblong. Standard broad, incumbent, subsessile. Sta- 

 mens diadelphous. Style filiform. Stigma capitate. Le- 

 gume compressed, stiped, 1 4-seeded. 



Diadelpliia. Decandria. 



A. monoica EU. : stem hairy ; leaves ternate ; leafets ovate,'smooth ; 

 racemes of the stem pendulous, bearing petals, sterile ; radical pedun- 

 cles bearing apetalous fertile flowers. Glycine monoica Linn. 



HAB. Woods. N. Y. to Car. July, Aug. If. Stem twining, 

 slender. Flowers purple. 



23. APIOS. Pursk. 



Calyx campanulate, with 4 obsolete teeth, 1 acute and 

 elongated under the keel. Carol papilionaceous. Keel fal- 

 cate reflecting the apex of the standard. Stamens diadelphous. 

 Stigma emarginate. Legume coriaceous, many-seeded. 



Diadelpliia. Decandria. 



A. tuber osa Moench. Gylcine apios Linn. 



HAB. Woods. N. Y. to Car. July, Aug. If. Root tuberous. 

 Stem twining. Leaves pinnate ; leafets 5 7. Flowers dark pur- 

 ple in axillary racemes. Ground-nut. Wild Bean. 



24. PHASEOLUS. Linn. 



Calyx campanulate, bilabiate ; upper lip 2-toothed ; lower 

 one 3-parted. Carol papilionaceous. Keel, stamens and style 

 spirally twisted or rarely incurved. Legume compressed or 

 cylindric, 2-valved, many-seeded. Leaves ternate. 



Diadelpliia. Decandria. 



1. P. perennis Walt. : twining, pubescent ; leafets ovate, acuminate, 

 3-nerved ; racemes 1 3, axillary, paniculate, longer than the leaves ; 

 bracts minute ; legumes pendulous, broad, falcate, mucronate. P.pani- 

 culatus Mich. Dolichos polystachyus Linn. 



HAB. Dry woods. N. Y. to Car. W. to Miss. July. If. 



Stem long. Panicle 610 inches long. Flowers purplish, large. 

 Standard large. Wild Kidney-bean. 



