286 OROBANCHACE^. (hUOOAI-UAPE FAMILY.) 



branching annuals. Leaves petioled, eutirc, roundish, the upper ones alternate. 

 Flowers racemcd. 



1. M. proboscidea, Glox. — Stems thick, at length prostrate; leaves 

 round-cordate; corolla (li' long) whitish, spotted with yellow and |)ur]>lc; cap- 

 sule crested on one side, shorter tliaa the beaks. — Waste places. Introduced. 

 Julv and Aug. 



Order 90. OROBAiVCHACE^. (Broom-rape Family.) 



Low, leafless, scaly herbs, parasitic on roots, with bilabiate didynanious 

 flowers. — Caly.\ 4 - 5-toothed or parted. Corolla withering-persistent, 

 tubular, the upper lip 2-clefl or entire, the lower 3-lobed. Stamens in- 

 serted on the tube of the corolla : anthers persis^tent. Ovary free, 1-celled, 

 with 2-4 yiarietal placenta;. Style simple, curved at the ape.x : stigma 

 thick, 2-lol)e(l. Capsule 2-valved, many-seeded. Seeds very small, ana- 

 tropous, with the minute embryo at the base of transparent albumen. — 

 Flowers perfect or polygamous, solitary or spiked. 



Synopsis. 



1. EPIPnEOrS. Flowers polygamous, spiked ; the lower ones fertile, the upper sterile. Ca- 



1} X '^-bracted, 5-toothed. Stem br.iiichiiig. 



2. CONOPIIOLIS. Flowers perfect, spiked. Cal>x 2-bracted, cleft ou the lower side. Stem 



simple, thick and fleshy. 



3. APHYM.ON. Flowers solitary, perfect. Calyx bractless, 6-cleft. Corolla uuiiil; equally 



6-lobcd. 



1. EPIPHEGUS, Nutt. Br:F.rii-prrv"<5. 



Flowers polygamous ; the upper ones slender and sterile, the lower ahhrcviatcd 

 and fertile. Calyx 5-toothed. Capsule 2-valved at the apex, with 2 jjlacentse 

 on each valve. — Stem smooth, slender, much hranched, jjurplish. Flowers 

 small, in loose slender spikes. Corolla j)urplish. 



1. E. Virginiana, Bart. — Under Beech-trees, in deep .shades, Florida to 

 Mississippi, and northward. Aug. — Stems 6' -12' high. Flowers scattered. 

 Corolla of the sterile flowers 4" - G" long, 4-toothed, curved. 



2. CONOPHOLIS, Wallr. Squaw-root. 



Flowers perfect, densely spiked. Calyx 2-bractcd, tubular, 4-toothcd, cleft on 

 the lower side. Upper lip of the corolla arching, notched ; the lower short, 3- 

 toothed. Stamens exsertcd. Capsule 2-valved, with 2 placcntaj on each valve. 

 — A thick and fleshy whitish simple herb, covered with imbricated scales. Flow- 

 ers ycUowisli, spreading. 



1. C. Americana, Wallr. (Orobanchc, Z.) —Shady woods, Florida to 

 Mississippi, and northward. April. — Stems clustered from matted roots, 4'- 6' 

 high, i' thick. 



