F NORTH AMERICA 57 



many striking Genera, with several Amer. sp. 

 introduced, I will merely add here two from 

 Collins herbarium chiefly. 



875. IPOMEA HUM IMS Raf. Ip. heterophyla 

 Col. herb, smooth, stem erect humble angular, 

 leaves cordate palmate 51ohed, lobes ovate and 

 lanceolate acute, peduncles as long as leaves 

 l-2flore, 2 subulate bracts, segments of calix 

 ovate acute ciliate, hairs curved South Florida 

 and Cuba, annual, root slender, stem semipedal, 

 leaves small similar, flowers red, calix with sin- 

 gular cilia on the margin and back, white long 

 and incurved. Very different from Ip. hetero- 

 phyla of Mexico, a large climbing plant, with 

 different leaves: both belong to the subgenus 

 Hemitasis fl. tcl. 1016 with very unequal calix. 



976. QUAMOCTITA MULTIFIDA Raf. Twining, 

 smooth, leaves multifid laciniate, base truncate 

 sinusses obtuse, segments linear and lanceolate 

 acute, peduncles 3-5flore equal to petiols, calix 

 acute a curious sp. deemed a garden hybrid, 

 produced by Q. coccinea and Q. pinnalajenvcs 

 variously cut, few alike, some reniform with 

 shorter cuts, flowers handsome large purple, 

 tube clavate, limb flat stellate pentagone, sta- 

 mens exserted. Seen alive in gardens, where 

 sometimes spontaneous. 



877. PANAX LANCEOLA^M R. Root slender, 

 stem humble, folioles 3 t > subequal lanceolate 

 acute sharply.serrate sessile, the lateral obli- 

 qual, umbel shorter than leaves Mts. Allegha- 

 nies, blended by some of our botanists with P. 

 trifotium that has folioles ovate and obovate 

 much smaller and umbel much longer than 

 leaves. This rises 8 to 10 inches, folioles over 

 one inch long narrow : root slender, annual ? 3 

 leaves as usual. 



