190 POPULAR FLORA. 
Ill. Apetalous Division. 
74. BIRTHWORT FAMILY. Order ARISTOLOCHIACES. 
Herbs or twining vines, with perfect and large flowers, the tube of the 3-lobed salon 
" coherent with the 6-celled 
and many-seeded ovary. 
Leaves. mostly heart- 
ts shaped or kidney-shaped, 
and entire, on long foot- 
stalks, alternate, or else 
from the rootstock at the 
surface of the ground. 
Lobes of the calyx edge 
to edge in the bud, usu- 
ally dull-colored. 
471. Plant of Canada Asarum or 
Wild-Ginger, in flower. 472. Magui- 
Ged flower divided lengthwise, and the 
calyx spread out flat. 473. Flower, 
with the.lobes of the calyx cut away, 
and the ovary cut across. 474. Aeep- 
arate stamen, more magnified ; outside 
view. 475. Magnified seed divided , 
lengthwise. 
Stemless herbs, with a pair of leaves and a flower between them from the spicy-tasted 
"and creeping rootstock: calyx short, 3-cleft or 3-lobed; stamens 12, with filaments, 
which are united only with the base of the thick 6-lobed style, and are pointed above 
the anthers, (dsarum) Witp-GincER. 
Twining shrubs or else low herbs: calyx.a crooked tube, with narrow throat and a 
slightly 3-lobed spreading border: stamens 6, sessile on the outside of the 3 lobes of 
the sessile stigma, i.e. two anthers or 4 cells to each lobe, attached to the stigma 
by their whole length: fruit a 6-valved pod, filled with numerous flat seeds, 
3 (Aristolochia). Brrtaworr. 
Birthwort. Aristolochia. 
1. Syaxenoot B. or Virernta SNAKEROOT. Herb 8! to 15' high; several stems from a tufted root, 
downy; flowers borne next the ground, in general shape much like the letter S; leaves oblong- 
heart-shaped or halberd-shaped. Rich woods; becoming scarce. A. serpentaria. 
8. Pipz-ving B. A tall woody climber, with rounded kidney-shaped leaves, 8! or 12' broad when 
full grown; flower 14! ‘long, curved like a Dutch pipe; greenish outside, and with the short 
8-lobed border brown-purple within. Alleghany Mountains, or near them; and cultivated for 
arbors. A, Sipho. 
