5iS KEOBOT. 



878. Paxax americanum R. quinquefoliiim 

 var. do R. med. fl. t. 71. perennial, root fusi- 

 form tuberose, stem streight, folioles 3 to 5 un- 

 equal, petiolate, 3 large serrate cuneate acumi- 

 nate, two small at base subovate, sometimes 

 lacking,umbel equal to leaves. — This is the fa- 

 mous American Ginseng found from Canada to 

 Missouri, quite different from the Chinese or 

 Tartarian sp. with 5 equal broad ovate leaves ! 

 It has also some varieties, 1 ohovatum with 

 broader leaves unequaly serrate, but still acute 

 at base, 2 elatum, very tall, 3 feet high, perhaps 

 only old age. For a long account of this plant 

 see my med. fl.*2. page 52. 



ASCLEPIAS and akin 

 ^/ 879. GoNOLOBus BiFLORUs Raf. Coll. herb, 



prostrate hirsute, leaves small cordate ciliate 

 acute on short petiols sometimes obliqual ; flow- 

 ers geminate, peduncles equal to petiols — on 

 Red River in Arkanzas and Texas, remarka- 

 ble by small leaves and flowers, one fourth in 

 size of G. hirsutus. flowers dark purple, lobes 

 oblong obtuse : whole plant except corolla co- 

 vered with soft white hairs. 



880. Ansonia tenuifolia R. stem suff'ruti- 

 cose ramose smooth, branches pubescent, leaves 

 narrow linear uninerve quite smooth, margin rie- 

 volute, end obtuse — Florida found by Kin. One 

 of the 3 sp. blended in A. angustifolia, which 

 has leaves linear lanceolate, stem herbaceous 

 pilose. The A. ciliata of Walter I have also 

 and is quite distinct by flat leaves broader al- 

 most lanceolate quite ciliate with several small 

 lateral nerves. There are 3 similar deviations 

 In A. latifolia with ovate acuminate leaves, 2d 

 with elliptic acute leaves, A. elliptica, Sd with 

 lanceolate leaves which is A. salicifolia, I have 



