64 FOUNDATIONS OF BOTANY 
anthers transversely 2-celled. Pistillate flowers with the 
calyx-tube adnate to the ovary, stigma sessile, berry 
1-seeded.* 
1. P.flavescens, Nutt. AMERICAN MISTLETOE. Veryround, bushy ; 
branches very brittle at the joints, opposite or whorled, 6 in. to 2 ft. 
long. Leaves flat, leathery, or somewhat fleshy, nearly veinless, 
obovate, entire, with short petioles. Flowering spikes solitary or 
2-3 together in the axils of the leaves. Berry roundish, white, 
glutinous. Parasitic on many deciduous trees.* 
23. SANTALACEZ. SanpaLtwoop FamIty. 
Herbs, shrubs, or trees with entire leaves. Flowers usually 
small. Calyx 4—5-cleft, its tube adnate to the ovary. Corolla 
wanting. Stamens as many as the calyx-lobes and opposite 
them, inserted on the margin of a fleshy disk. Style1. Ovary 
1-celled, with 2-4 ovules borne at the top of a free central 
placenta. Fruit 1-seeded. 
COMANDRA, Nutt. 
Low, smooth perennials with herbaceous stems, rather 
woody below, often parasitic. Leaves alternate and nearly 
sessile. Flowers nearly white, in small umbel-like clusters, 
perfect. Calyx bell-shaped at first. Stamens borne on a 
5-lobed disk which surrounds the pistil, anthers connected 
by a tuft of hairs to the calyx-lobes. 
1. C. umbellata, Nutt. Bastarp Toap-rLax.- Plant 8-10 in. 
high, with very leafy stems. Roots attached to the roots of trees, 
from which they draw nourishment. Leaves oblong or oblanceolate, 
pale, nearly 1 in. long. Umbel-like clusters about 3-flowered, longer 
than the leaves. Rocky, dry woods. 
24. ARISTOLOCHIACEZ. DutTcHMAN’s PIPE FAMILY. 
Herbaceous plants, stemless or with twining and leafy 
stems. Leaves alternate, without stipules, petioled, mostly 
roundish or kidney-shaped. Flowers axillary, solitary or 
clustered, perfect, regular or irregular. Calyx tubular, 3 or 
