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ARISTOLOCHIE.E EMPETRE^E. 
Order LXXI. ARISTOLOCHIE^. 
Perianth adnate to the ovary below, tubular above, with a 
lobed dilated usually irregular limb. Stam. 6 — 12, epigynous. 
Ovary 3 — 6-celled. Style simple ; stigma radiant. Fr. many- 
seeded. Seed with a minute embryo at the base of fleshy 
albumen. 
1. Aristolochia. Perianth tubular, swelling at the base ; 
mouth dilated on one side. Anth. 6, adnate to the short 
columnar style under the 6-lobed stigma. Caps. 6-celled. 
2. Asarum. Perianth bellshaped, single, 3-fid. Stam. 12, 
inserted at the base of the style. Anth. attached to the 
middle of the filaments. Stigma 6-lobed. Caps. 6-celled. 
1. Aristolochia Linn. 
*1. A. Clematitis (L.) ; root creeping, st. erect simple, 1. cor- 
date stalked glabrous, fl. aggregate.— E. B. 398. St. 6. 16.— Fl. 
pale yellow. Naturalized near old ruins. P. VII. VIII. Birth- 
wort. E. 
2. Asarum Linn. 
1. A. europaum (L.) ; 1. reniform obtuse binate. — E. B. 1083. 
St. 2. 7. — St. short, with 2 leaves, between which there is a 
solitary drooping dull-green fl. ; segments of the perianth ovate 
and incurved. Filaments extending beyond the anthers. Woods 
in the north, rare. P. V. Asarabacca. E. S. 
Order LXXIL EMPETRE^. 
Dioecious. Perianth of hypogynous scales imbricated in several 
rows. Stam. equal in number to the inner row and alternate 
with them, free. Ovary free, on a fleshy disk, 3 — 6-celled. 
Ovules solitary, ascending. Style 1. Stigma radiant. Fr. 
fleshy with bony cells. Embryo in the axis of fleshy albumen. 
Radicle inferior. 
1. Empetrum. Cal. 3-parted. Pet. 3. Stam. 3 in the 
male fl. Style short, stigma dilated peltate with 6 — 9 rays. 
Berry globose, 1-celled. Seeds 6 — 9. 
1. Empetrum Linn. 
1. E. nigrum (L.) ; procumbent, 1. linear-oblong their margins 
meeting in a white line beneath. — E. B. 526. — A small procum- 
bent leafy heathlike shrub. Fl. axillary, small, purple. Stigma 
with 9 rays. Berries black. — Mountain heaths. Sh. V. Crow- 
berry. 
