Genus 



BROOM-RAPE FAMILY 



2. Orobanche minor J. E. Smith. Lesser 



or Clover Broom-rape. Herb-bane. 



Fig. 3879. 



O. minor J. E. Smith, Engl. Bot. pi. 422. 1797. 



Plant yellowish-brown ; stem rather stout, sim- 

 ple, 4'-2o' high ; lower scales numerous, ovate- 

 oblong, the upper lanceolate, acute, scattered, 

 3"-io" long. Spike dense, or the lower flowers 

 separated, 3'-8' long; bracts 1 or 2, lanceolate, 

 equalling or longer than the flowers ; flowers 

 5"-o" long; calyx split both above and below, 

 each of the lateral segments 2-cleft, the teeth lan- 

 ceolate-subulate ; corolla-tube yellowish, scarcely 

 constricted above the ovary, the limb bluish. 



Parasitic on the roots of clover, New Jersey to 

 Virginia. Naturalized from Europe. Called also 

 devil's-root and hell-root. Strangle-tare. May-July. 



3. Orobanche ludoviciana Nutt. Louisiana 

 Broom-rape. Fig. 3880. 



Orobanche ludoviciana Nutt. Gen. 2: 58. 1818. 

 Aphyllon ludovicianum A. Gray, Bot. Cal. I: 585. 1876. 

 Myzorrhiza ludoviciana Rydb. ; Small, Fl. SE. U. S. 



1093. 1903. 



Stems stout, simple, solitary or clustered, viscid- 

 puberulent, 4'-i2' high, scaly. Flowers 6"-8" long, 

 very numerous in dense terminal spikes, 1-2-bracteo- 

 late under the calyx ; calyx 5-c!eft, the lobes some- 

 what unequal, linear-lanceolate, acuminate, longer 

 than the corolla-tube, or shorter ; corolla 2-lipped. 

 purplish, its tube narrow, about twice as long as the 

 limb, the teeth of its lips acute ; anthers woolly ; 

 capsule ovoid-oblong, shorter than the calyx. 



In sandy soil, Illinois to South Dakota, Saskatche- 

 wan, Nebraska, Texas, Arizona and California. Strangle tare. June Aug. 



3. CONOPHOLIS YYallr. Orobanch. 78. 1825. 



An erect stout simple glabrous, densely scaly, light brown herb, parasitic on the roots of 

 trees, with yellowish flowers 2-bracteolate under the calyx, in a thick dense bracted spike, 

 the bracts similar to the scales of the stem. Calyx oblique, deeply split on the lower side, 

 3-4-toothed on the upper. Corolla strongly 2-lipped, the tube slightly curved, the upper lip 

 concave, nearly erect, emarginate, the lower spreading, 3-lobed. Stamens exserted ; anther- 

 sacs bristly pubescent. Placentae about equidistant ; stigma capitate, obscurely 2-lamellate. 

 Capsule ovoid-globose. [Greek, signifying a 

 scaly cone.] 



Three known species, the following typical one 

 of eastern North America, the other southwestern 

 and Mexican. 



i. Conopholis americana ( L. f. ) Wallr. 

 Squaw-root. Fig. 3881. 



Orobanche americana L. f. Suppl. 88. 1767. 

 Conopholis americana Wallr. Orobanch. 78. 1825. 



Plants 3'-io' high from a thickened base, light 

 brown, usually clustered, covered all over with 

 stiff imbricated scales. Upper scales lanceolate 

 or ovate, acute, 6"-io" long, the lowest much 

 shorter; flowers about *' long, exceedingly nu- 

 merous in the dense spike which is 6"-io" thick; 

 corolla pale yellow, somewhat exceeding the ca- 

 lyx; anthers sagittate; capsule ovoid-globose, 

 4"-5" high. 



In rich woods at bases of trees, Maine to On- 

 tario, Michigan, Florida, Alabama and Tennessee. 

 Cancer-root. Earth-club. Clap-wort. April-Aug. 



