394 OROBANCHACE^E. (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 thyrsoid-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 placentas on each valve. Herbs slender, purplish or yellowish- 

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

 firt, upon, and <j>r)ybs, 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 ; N. Brunswick to Wise., south to Fla. and Ark. Aug. - < >ct. 



2. CONOPHOLIS, 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 placentas, 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 KUIVOS, a cone, and </>oAis, a scale). 



1. C. Americana, 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 fleshy scales, which become dry and hard. 



3. APHYLLON, Mitchell. NAKED 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 lower spreading. 3-lobed. Stamens included. 

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

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

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

 privative and <pv\\ov, foliage, alluding to the naked stalks.) 



* Flowers solitary on long naked scapes or peduncles, without bractlets ; corolla 

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



1. A. uniflorum, Gray. (ONE-FLOWERED CANCER-ROOT.) Stem sub- 

 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- 

 awf-shnped, half the length of the corolla, which is 1' long, with 2 yellow 



