322 OROBANCIIACK.E. (bUOOM-RAPK FAMILY.) 



less, with a thickened and roughened coal. — Low hrancliing annuals, clammy- 

 pubcsccnt, exlialing a heavy odor : .stems thickish : leaves .simple, rounded. 

 Flowers raceiiK'd, large. ( Dedicated to Prof. John Martyu, of Caml)ridge.) 



1. M. proboseidea, Glo.x. Leaves heart-shaped, oblique, entire, or un- 

 dulate, the upper alternate; corolla dull white or purplish, or spotted with yel- 

 low and ])urple ; endocarp of the fruit crested on one side, long-beaked. — Banks 

 of the Mississippi in S. Illinois (probaldy indigenous) and southwestward. Also 

 common in gardens. July -Oct. 



Ordkr G7. OROBANCUACEiE. (Broom-rape Family.) 



Herbs destitute of green foliage (root-parasites) monopetalous, didi/na- 

 mous, the ovary one-celled uuth 2 or 4 parietal placentce; pod very inany- 

 secded: seeds minute, with albumen^ and a very minute embryo. — Ca!y.K 

 persistent, 4 - 5-toothed or parted. Corolla tubular, more or less 2-lipped, 

 ringent, persistent and withering; the upper lip entire or 2-lobed, the low- 

 er 3-lobed. Stamens 4, dldyiiamous, inserted on the tube of the corolla: 

 anthers 2-celled, persistent. Ovary free, ovoid, pointed with a long style 

 which is curved at the apex : stigma large. Pod 1-celled, 2'Valved ; the 

 valves each bearing on tlieir face one placenta or a pair. Seeds very nu- 

 merous, minute, anatropous, the minute embryo at the base of transparent 

 albumen. — Low, thick or lleshy herbs, bearing scales in place of leaves, 

 lurid yellowish or brownish throughout. Flowers solitary or spiked. 



* Flowers of two sorts : stems branching. 



1. EpipUeff us. Upper flowers sterile, with a tubular corolla ; the lower fertile, with the 



corolla miuute and not expanding. Bracts inconspicuous. 



# * Flowers all alike and perfect: stems mostly simple. 



2. C on o pi) oils. Flowers spiked. Calyx with 2 bractlets, and split on the lower side. Sta- 



mens protruded. Corolla 2-Iipped. 



3. Pheliprca. Flowers spiked or panicled. Calyx with 2 bractlcts, and regularly 5-cleft. 



Corolla 2-lipped. Stamens included. 



4. Aphylloii. Flowers solitary, without bractlets. Calyx regularly 5-cleft. Corolla with 



the border almost equally 5-lobed. Stamens included. 



1. EPIPHEGUS, Nutt. BcEcn-DROPS. Caxcer-root. 



Flowers racemose or spiked, scattered on the branches ; the upper sterile, with 

 a long tuliular corolla and long filaments and style ; the lower fertile, with a very 

 short corolla which seldom opens, l)Ut is forced off from the base i)y the growth 

 of the pod : the stamens and style very short. Calyx 5-toothcd. Stigma capi- 

 tate, a little 2-lobed. Pod 2-valved at the apex, with 2 approximate jdaccntaj 

 on each valve. — Herbs slender, purplish or yellowish-brown, much branched, 

 with small and scattered scales, 6' -12' high. (Name composed of eVi, upon, 

 and (firjyik, the Bez-rh, because it grows on the roots of that tree.) 



1. E. Virginiana, Bart. (E. Americimus, Niitt.) — Common under 

 Beech-trees, parasitic on their roots. Aug. -Oct. — Corolla of the upj^er (ster- 

 ile) flowers whitish and purple, 6" - 8" long, curved, 4-toothed. 



