64 FOUNDATIONS OF BOTANY 



anthers transversely 2-celled. Pistillate flowers with the 

 calyx-tube adnate to the ovary, stigma sessile, berry 

 l-seeded,* 



1. P. flavescens, Nutt. American Mistletoe. Very round, 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 

 2-6 together in the axils of the leaves. Berry roundish, white, 

 glutinous. Parasitic on many deciduous trees.* 



23. SANTALACE-S:. Sandalwood Family. 



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. Style 1. 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. Bastard Toad-flax. 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. ARISTOLOCHIACE^. Dutchman'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 



