DIADELPHIA DECANDRIA. 



237 



kindred genera. I there proposed to retain the name Glycine to th« G. 

 Apios the original type of the genus, and to this group I gave the name 

 of Baldwinia as a tribute of lespect to the late Dr. Paldwin, whose name 

 occurs so often in this work. I still think this arrangement the most cor- 

 rect, but another has been extensively adopted^ and I wish not unnecessa- 

 rily to multiply synonymes. 



\ 



THYRSANTHUS. 



E. 



C<«/?/.r bilabiatus^Ia- 1 Calyx 2 lipped, the 

 io superiore trunca- upper lip truncate, e 



lo^ emarginato, inferi- | marginate, the lower 



ore trifido. Vexillum 



basi callosiim. 



Alee 



apice 



cohoerentes. 



TubuliLS denticulatus 

 basin stipitis ovarii va- 

 ginans. Legumen to- 

 rulosum, subteres, po- 

 lyspermum. 



three cleft. Vexillum 



callous 



at 



base. 



Wings cohering at the 

 summit. A small den- 

 ticulate tuhe sheathing 

 the base of the ova- 

 rium. Pod torulose 

 nearly terete, many 

 seeded. 



9 



^ 



RUTESCENS. 



Journal of the Acad, of Nat. Sciences, Philad. 1 

 Glycine Frutescens, Sp. pi. 3. p. 1067. Mich. 

 Anon. Frutescens. Walt. p. 1S6. 

 Apios Frutescens. Pursh 2. p. 474 



i^. 



p. 371. 



2. p. 63, 



Wisie 



Nutt. 2. p. 116. 



A twining shrub, climbing over bushes and small trees to some height, 

 particularly along the margins of rivers; the young branches angular 



pubescent. Le.a'UPR ninnjifA- apnpriillv A nnir witfi ^r\ aAA nnp : 



Flowers 



leafiets^ 



ovate lanceolate, slightly acuminate, pubescent, 



panicles (thyrsi,) axillary. Bracteas large, ovate lanceolate, acuminate^ 

 J^(^^^d>^one at the base of each flower-bud. Flowers purple ; vexillum 



I base. Keel incurved at 

 Fod long, leathery, a little ru- 



the 



siunrait 



summit, not deflecting the vexillum. 



^^y many 

 Thi 



Seed^ reniform, speckled. 



1 Uis very ornamental plant grows in damp rich soils. 

 * lowers April—May. 



