DICOTYLEDONOUS PLANTS - 65 
6 lobed, usually colored. Petals none. Stamens 6-12, inserted 
onthe ovary. Pistils 1, ovary mostly 6-celled, many-seeded.* 
I. ASARUM, Tourn. 
Perennial, stemless, aromatic herbs, with slender, branch- 
ing rootstocks. Leaves long-petioled, from kidney-shaped to 
halberd-shaped. Flowers axillary, peduncled. Calyx regular, 
3-lobed, withering-persistent. Stamens 12, the filaments par- 
tially united with the style and usually prolonged beyond the 
anthers. Ovary 6-celled with parietal placentze, many-seeded. 
Mature capsule roundish, often somewhat fleshy.* 
1. A. canadense, L. Witp Gincer. Plant soft, hairy. Leaves 
2, large, kidney-shaped, on long petioles, with the flower borne on a 
short peduncle between them. Flower greenish outside, brownish- 
purple inside. Calyx-tube wholly adnate to the ovary, calyx-lobes 
taper-pointed, widely spreading, reflexed at the tip. Rich, shady 
woods, common N. 
2. A. virginicum, L. VireGinrA AsARum. Leaves evergreen, 1-3 
to each plant, smooth, mottled, round-cordate, entire, 2-3 in. long 
and broad; petioles smooth or downy along one side, 3-7 in. long. 
Flowers nearly sessile, greenish without, dull purple within, 2—3 in. 
long, tube inflated below, narrow at the throat, lobes spreading. 
Rich, shady woods.* 
II. ARISTOLOCHIA, Tourn. 
Erect or twining perennial herbs or woody vines. Leaves 
alternate, heart-shaped at the base, palmately nerved, petioled, 
entire. Flowers irregular, solitary, or in small clusters. 
Calyx more or less adnate to the ovary, tubular, irregular. 
Stamens mostly 6, sessile, adnate to the angled and fleshy 
3-6-lobed or angled stigma. Capsule naked, 6-valved, seeds 
very numerous.* ‘ 
1. A. Sipho, L’Her. DutTcHMAn’s Piper, Pirz Vine. A tall 
climber. Leaves dark green, smooth, round-kidney-shaped, some- 
times 1 ft. wide. Peduncles 1-flowered, with a single clasping bract. 
Calyx 14 in. long, bent into the shape of a pipe, its border abruptly 
spreading, brownish-purple. Rich woods, often cultivated. 
2. A. tomentosa, Sims. DutTcuMman’s Pirr. Stem woody, climb- 
ing high, branches and leaves densely woolly. Leaves heart-shaped, 
prominently veined, 3-5 in. long and broad. Flowers axillary, 
