LXIII, ARISTOLOCHIA‘CEZ: ARISTOLO‘CHIA. 701 
Orpver LXIII. ARISTOLOCHIA‘CEA. 
OrD. CHAR. Perianth superior, 3-cleft, equal or unequal. Stamens definite. 
Ovarium inferior, many-celled. Style short. Stigma divided. Fruit cap- 
sular or baccate. Albumen fleshy. (G. Don.) 
Leaves simple, alternate, exstipulate, deciduous; cordate, entire. Flowers 
axillary. — Twining deciduous shrubs ; natives of North America. 
Genus I. 
l : | 
ARISTOLO‘CHIA LZ. Tue Birtraworr. Lin. Syst. Gynandria 
Hexandria. 
Identification. Schreb. Lin. Gen., No. 1383. ; Willd. Sp. Pl., 4. p. 151. 
Synonymes. Aristoloche, Fr.; Osterluzey, Ger. 
Derivation. Aristolochia was the name of a plant mentioned by Dioscorides, and considered as of 
sovereign use in the disorders incident to childbirth: it is derived from arzston, best, and lochia 
parturition. . 
Gen. Char., §c. Calyx of some other colour than green, and in colour and 
texture resembling a corolla; in its lowest part connate with the ovary ; 
inflated above this part, then tubular, and ending in an expanded border, 
which has 3 segments, and these are valvate in estivation. Stamens 6, ad- 
hering to the style and stigmas. Style 1. Stigmas 6, radiating. Capsule 
with 6 cells and numerous seeds. 
Leaves as in the Order, exstipulate, deciduous. Flowers yellow, brown, 
dark brown, and, in some, spotted on a yellow ground. — Shrubs, twining ; 
natives of North America; of easy culture in any common soil that 
is dry. 
41. A.st'puo L’Hérit. The Siphon-hke, or Tube-flowered, Birthwort. 
Identification. L’Hérit. Stirp. Nov., 13. t.7.; Willd. Sp. Pl., 4. p. 155. 
Synonymes. A. macrophYlla Lam. Encycl. 1. p. 252. ; Aristoloche Syphon, Fr.; grossblattrige Os- 
terluzey, Ger.; Pipe Vine, or Birthwort, Amer.; Sifo and Pipa. Ital. 
Engravings. N. Du Ham., 4, t. 10.; Bot. Mag., t. 534.5 and our jig. 1373. 
Spec. Char., §c. Stem twining. Leaves 
cordate, acute. Bractea of the pe- 
duncle ovate. Corolla ascending ; 
its limb in 3 equal portions, not ex-~ 
panding flat, brown. (Willd.) A 
deciduous twining shrub. Alleghany 
Mountains, from Pennsylvania to 
Carolina. Stem 15 ft. to 30 ft. In- 
troduced in 1763. Flowers yellowish 
brown; May and June. 
Striking from the magnificent ap- 
pearance of the leaves, and remark- 
able for the form of its flower, which 
is bent like a siphon; for the trifid 
border of its corolla, and for the very 
large bractea placed on the middle of 
the peduncle. The roots are woody, 
and have the smell of camphor. The 
stems, branches, and twigs are also 
strongly scented, as are the flowers. 
In British gardens, this species, to 
grow freely, requires a deep free soil, 1573. A. stpho. 
