314 72. Orobanche. 23. OROBANCHEiE. PL ex, cor, 



of the valves ; seeds numerous, minute ; spermodermis sim- 

 ple, fungous; perisperm fleshy; corculum subglobose, ex- 

 centric; cotyledons very short; radicle centrifugal. — Herb 

 rather fleshy, mostly parasitic on the root of other plants ; 

 root tuberous, scaly, imbricate ; stem alternately scaly, 

 mostly simple ; flowers bracteated, spiked, terminal. 



Calyx 2-parted; lobes 2-cut Orobanche. 72. 



Calyx 4-cut, bellshape Lathr^a. 73. 



I. 72. OROBANCHE. Theophrastus. Broomrape. 



Calyx 2-parted ; lobes 2-cut ; corolla tubular, 2-lipped, 

 4 or 5-lobed ; stamens 4, didynamous. — Herb light-brown, 

 simple ; bractea 1 or 3 to each flower. 



a. Bractea 1 to each flower ; corolla i;-lobed. 



1. Orobanche major. Great broomrape. 

 Stem quite simple ; corolla 4-cut, inflated ; lobes of the 



lip equal, acute ; stamens below bald ; stigma 2-lobed ; lobes 

 distant ; style above pubescent. 



Orobanche major garyophyllum olens, Raii Syn. 288 *, 1 . 

 Rapum genistae, sive Orobanche, Ger. em. 1311, 2; Park. 229. 

 Orobanche major, Lin. S. P. 882. 



Sterile places on leguminous plants; perennial; June 

 and July. 



Root rather tuberose ; stem 1 foot high, pubescent ; spike 

 many-flowered ; flowers scentless. 



2. Orobanche elatior. Tall broomrape. 

 Stem not branched; coro//a 4-cut, tubular ; lobes equal, 



acute I filaments downy beneath ; stigma reverse-heartshape; 



style bald above. 



Orobanche elatior, StUton T. L. S. 4, 178. 

 Orobanche amethystea, Thuill. Fl, Par. 



Margin of fields ; perennial ; July and August. 

 Herb yellowish ; spike many-flowered, close ; stigma yel- 

 low. 



3. Orobanche minor. Small broomrape. 

 Stem, not branched; roro//a 4-cut, tubular ; middle lobe 



3-cut; filaments fringed bejicath ; style bald above. 



Orobanche flore minnrc, DiUm in Ritii Syn. 288 *,2; Park. 1363. 

 Orobanche minor, £71^. But. 422. 



Clover fields ; annual ; .July and August. 



f/c/Z' pale purplish ; stem rather bent; stigma Tpurple. 



