6 
DESCRIPTION OF MEDICINAL PLANTS. 
Flowerless stems terminated by a large, round 7-9 lobed 
leaf, peltate in the middle like an umbrella. Flowering 
stems bearing two one-sided leaves, with a stalk fixed near 
their inner edge; the nodding, white flower nearly 2' broad. 
Sepals 6, deciduous, petals 6 or 9, obovate. Stamens twice 
as many as petals. Fruit a large fleshy berry. Rich wood- 
lands; very common. FI. April. Rhizome, collected in 
autumn. 
NYMPHiE AEEiE. (Water-Lily Family.) 
Nymphsea odorata, Ait. Castalia odorata, Green. Water- 
Lily. Aqueous plant inhabiting stagnant waters, the single 
flowers and leaves floating on the surface, connected by cylin- 
drical leafstalks and peduncles with the tuberous roots, em- 
bedded in the bottom mud. Sepals 4, green outside; petals 
numerous, in many rows, the innermost gradually pass- 
ing into the stamens, imbricately inserted all over the ovary. 
Stamens very numerous, the outer with dilated filaments. 
Ovary 12-30 celled, the concave summit tipped with a glob- 
ular projection at the center. Leaves orbicular, cordate-cleft 
at the base. Fruit depressed globular, maturing under water. 
West Tennessee. Flowers in summer. Tuberous root col- 
lected in spring, before flowering. 
Nuphar advena, Ait. Yellow Pond-Lily. Spatterdock. 
Habitus of the former. Leaves with a deep sinus at the 
base, from a creeping, cylindrical rootstock. Sepals 6, un- 
equal, petals shorter than the stamens and resembling them, 
thick and fleshy, truncate ; stigma nearly entire, 12-24 rayed. 
Ovary and fruit ovate, ripening above water ; flowers yellow. 
Very common in the lower course of mountain streams. 
East Tennessee and West Tennessee. Flowers in summer. 
Rootstock collected at any time. 
SARRACENIACEiE. (Pitcher-Plants.) 
Sarracenia purpurea, L. Side-Saddle Flower. Pitcher- 
Plant. Leaves pitcher-shaped, ascending, curved, broadly 
winged. The hood erect, open, round, heart-shaped. Sepals 
