EMPETREJE. 308 



climbinj^. Z/f'rttx?^ alternate, simple. jp/owpr* axillary, soli - 

 tarv, of a brownish dull color. 



Genus I ARISTOLOCHIA. 



Flowers orynandroiis. Perianth tubular, iigulate at thr 

 apex, ventricose at the base. Anthers 6, sub-sessile, inserted 

 into the style. Stigma 6-clet\. Capsule 6.sided, 6-celled, 

 many seeded. 



1 A SiFHO. A vine, climbing over large trees. Leaves very large, cor- 

 date, ncuie, alternate, sprinkled with hairs. Flowers solitary, pedunculate, 

 with an ovate bract at the base. Perianth ascending, somewhat tubular, 

 the border 3-clet"i. brown. DxUchman's pipe. 



^l June. .Mountains. 



2 A ToMENTOSA. iS^em twining, ascending the loftiest trees. Z-eaw* near- 

 ly round, cordate, tomentose beneath, strongly veined. Perianth villous, the 

 border 3-clt't'r, nearly equal, the orifice oblique, greenish yellow, with the mar- 

 gin dark purple. Sti/rmas 3. 



^2 June. Mountains. 



3 A Serpentaria. Stem herbaceous, pubescent, erect, geniculate and 

 flexuous, geniculate at the base. Leaves cordate, oblong, acuminate, slight- 

 ly hairy. Flotreis on radicle peduncles, sonit times under the surface oi the 

 grouna. Limb of the perianth lanceolate, ventrico.se at the base. 



^2 Through the summer. Dry soils. S-12 in. 



4 A Hastata. Stetn tlexuous, simple, erect and procumbent. Leaves 

 somewhat cordate, hastate, acute, auriculate. Peduncles radicle, lip of the 

 perianth ovate. 



Mountains. 



Genus II ASARUM. 



Perianth cainpanulate, urccolale, .3- 4-cleft. Stamens 12, 

 j)laced upon the ovary. Anthers ;itt;ichcd to the side of the 

 tilament. S^y'e .short. <S'/ii,';/ifl stellate, G-lobed. Capsule 

 6-ceiled. 



1 A Canadense. leaves by pairs, broad, reniform. Perianth woolly, 

 deeply 3-parted. segments sub-lanceolaie, reflexed. Peduncles short. 



% April. Rich soils. Wild ginger. 



2 A ViRGiNicu.M. Leaves solitary, cordate, neariy round, coriaceous, gla- 

 bra - 'ed- Pcru/n^A glabrous, externally short, campanulate, with obtuse 



li- April. Rocky woods. 



3 A ARtFOLic.M. Leaves several from each root, hastate, cordate, varie- 

 gated, on long, pubescent petioles. Perianth urceolate, dark purple, border 

 5-cleft, pubescent within, pilaments \2, s[)ort. Anthers lineB.r. Seed few 

 in each cell. 



% March — April. Lof>se soils, very common. 



Order CXXXflf. EMPETRE.^.. 



Floirerg dicecious. Perianth con.sistinfj of 2-4 rows of 

 imbricated hypogynous scales. Stamens equal in number to 

 the scales, and alternate with them. Anthers with 2 distinct 



