82 G. AMPHICARPA. 



Pod compressed round acute, one seed lenticu- 

 lar, Peduncles biflore hibractate, flowers yeU 

 low, pods hiding in the ground, which the 

 name implies. Annuals. 



The 3 Genera have twining or flexuose stems, 

 and stipulate trifoliate leaves, roots creeping- 

 flowers estival. 



1. Amphicarpa viLLosA Raf. GL comosal 

 L, &c . . . Twining, stem and leaves hairy, fo- 

 lioles subequal ovate oblong acute soft, the lat- 

 eral obliqual : racemes short 5-9flowered, bracts 

 ovate acute striate, calix hairy — In Alabama 

 and Mississipi. Folioles uncial equal to petiols, 

 flowers white tipt with purple. Linneus having 

 only said of his Gl. comosa, leaves hirsute, ra- 

 cemes small lateral, flowers blue, seeds with 

 purple spots: it is impossible to identify it. 

 Torrey, Beck and Elliot omit it ; while Nuttal 

 deems it the real type of Gl. monoica. My des- 

 criptions and specimens will fix my sp. to which 

 1 give new names to avoid ambiguity. 



2. Amph. ciliata Raf. stem twining filiform 

 round with reflexed hairs, leaves on long peti- 

 ols, smooth but ciliate, folioles unequal, lateral 

 sessile obliqual trapezoidal, medial petiolate 

 rhomboidal rounded acute : raceme elongate 

 equal to petiols, peduncled and multiflore, 

 bracts obovate obtuse biflore, calix smooth — 

 Apalachian Mts of Virginia and Carolina, disc. 

 1825, flowers white, very distinct species. 



3. Amph. heterophyla Raf. monoica Nut- 

 tal. Stem twining filiform angular with reflex- 

 ed hairs,, leaves on short petiols variable but 

 shining scabrous and ciliate, subequal but either 

 ovate lanceolate acute or else ovate elliptical 

 obtuse: raceme elongate, multiflore, bracts 

 rounded striate, calix smooth — In the Allegha- 

 ny mts, of Pennsylv. flowers white. 



