394 OROBANCHACE^. (bROOM-RAPE FAMILY.) 



* * Flowers all alike and perfect ; stems mostly simple. 



2. Conopholis. Flowers densely spicate. Calyx deeply cleft in front. Corolla 2-lipped. 



Stamens exserted. 



3. Aphyllon. Flowers pedicellate, sometimes subsessile and tliyrsoid-spicate. Calyx 



regularly 5-cleft. Corolla somewhat 2-lipped. Stamens included. 



4. Orobanche. Flowers sessile, spicate. Calyx cleft before and behind almost to the 



base. Corolla 2-lipped. Stamens included. 



1. EPIPHEGUS, Nutt. Beech-drops. Cancer-root. 



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

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

 with a very short corolla which seldom opens, but is forced off from the base 

 by the growth of the pod ; stamens and style very short. Calyx 5-toothed. 

 Stigma capitate, a little 2-lobed. Capsule 2-valved at the apex, with 2 ap- 

 proximate placentae on each valve. — Herbs slender, purplish or yellowish- 

 brown, much branched, with small scattered scales, 6-12' high. (Name from 

 iiri, upon, and ^vyos, the Beech, because it grows on the roots of that tree.) 



1. E. Virginiana, Bart. Corolla of the upper (sterile) flowers whitish 

 and purple, 6 - 8" long, curved, 4-toothed. — Common under Beech-trees, para- 

 sitic on their roots ; X. Brunswick to Wise, south to Fla. and Ark. Aug. - Oct. 



2. CONCSPHOLIS, Wallroth. Squaw-root. Cancer-root. 



Flowers in a thick scaly spike, perfect, with 2 bractlets at the base of the 

 irregularly 4- 5-toothed calyx ; its tube split down on the lower side. Corolla 

 tubular, swollen at base, strongly 2-lipped ; upper lip arched, notched at the 

 summit, the lower shorter, 3-parted, spreading. Stamens protruded. Stigma 

 depressed. Capsule with 4 placents©, a pair on the middle of each valve. — 

 Upper scales forming bracts to the flowers, regularly imbricate, not unlike 

 those of a fir-cone (whence the name, from kQvos, a cone, and (poXis, a scale). 



1. C. AineriCcina, Wallroth. — Oak woods, growing in clusters among 

 fallen leaves; N. Eng. to Mich., south to Fla. and Tenn. May, June. — A 

 singular plant, chestnut-colored or yellowish throughout, as thick as a man's 

 thumb, 3-6' high, covered with flesliy scales, which become dry and hard. 



3. APHYLLON, ^Mitchell. Xaked Broom-rape. 



Flowers perfect, pedicellate, sometimes subsessile and thyrsoid-spicate. 

 Calyx 5-cleft, regular. Corolla somewhat 2-lipped ; the upper lip more or 

 less spreading and 2-lobed, the loAver spreading, 3-lobed. Stamens included. 

 Stigma broadly 2-lipped or crateriform. Capsule with 4 placenta, equidistant 

 or contiguous in pairs. Plants brownish or whitish. Flowers (purplish or 

 yellowish) and naked scapes minutely glandular-pubescent. (Name from o- 

 privative and (pvWou, foliage, alluding to the naked stalks.) 

 * F/ou-ers solitanj on Jong naked scapes or peduncles, ivithout bractlets ; corolla 

 with a long curved tube and spreading 5-Jobed limb. 



1. A. unifl6rurQ, Gray. (One-flowered Cancer-root.) Stem sul>- 

 terranean or nearly so, very short, scaly, often branched, each branch sending 

 up 1 -3 slender one-flowered scapes (3 - 5' high) ; divisions of the calyx lance- 

 awl-shaped, half the length of the corolla, Avhich is 1' long, with 2 yellow 



