234 56. OROBANCHACE^E. 



fetid. /3. pallidus (Koch) ; fl. without dark veins. Waste 

 places, preferring a calcareous soil. /3. Esher, Surrey. Mr. H. C. 

 Watson. A. or B. V. VII. 



4. DATURA Linn. Thorn-apple. 



fl. D. Stramonium (L.) ; 1. ovate unequally sinuate-dentate 

 glabrous, caps, erect spinose. E.B. 549. Fl. white, large, erect. 

 Fr. densely spinose. Caps, with 4 dissepiments below, but only 

 2 at the top. Waste ground, rare. A. VI. VII. E. 



Order LVI. OROBANCHACE.E. 



Cal. variously divided, persistent Cor. irregular, usually 2- 

 lipped, persistent, imbricate in aestivation. Stam. on the cor., 4, 

 didynamous. Anth. 2-celled ; cells distinct, parallel. Ovary in 

 a fleshy disk, 1 -celled, with 2 or more parietal placentas. Stigma 

 2-lobed. Fr. capsular, 2-valved, many-seeded. 



1. OROBANCHE. Cal. 4-cleft or of 2 usually bifid sepals. Cor. 

 ringent, 4 5-cleft, deciduous, its base persistent. Bracts 

 1 3. G. F. G. Gam. i. 49, 50. 



2. LATHR^A. Cor. 2-lipped, the upper lip galeate, deciduous, 

 entire. Otherwise like Orobanche. G. F. G. Gam. i. 51. 



1. OROBANCHE Linn. Broom-rape. 



* Sepals 2, entire or bifid, separate or connected below in front. 

 Bract 1 . Valves of caps, adhering at both ends. 



1. 0. Rapum (Thuill.); sep. 2- veined equally bifid nearly 

 equalling the cor. -tube, cor. bellshaped ventricose at the base in 

 front arcuate, lips wavy obsoletely denticulated (not fringed), 

 upper lip helm etsh aped scarcely emarginate, sides patent, middle 

 lobe of lower lip much longer than lateral lobes, stam. inserted 

 at the base of the cor. glabrous below, their upper part and the 

 style glandular-pubescent. E. B. 421. R. L f. 900 and 923. 

 O. major (L.) Sm., but Fries states that that syn. belongs to 0. 

 elatior. Stigma distantly bilobed, yellow. Anth. white when 

 dry. For a full description from fresh specimens see Leight. 

 Fl. Shrop. 302. Parasitical upon Broom, Furze and other 

 shrubby leguminous plants. P. V. VII. 



2. 0. rubra (Sm.); sep. 1 -veined lanceolate subulate-attenu- 

 ated exceeding the cor. -tube undivided, cor. bellshaped arcuate 

 glandular-pubescent externally and the upper lip internally, lips 

 acutely denticulate and crisped, upper lip emarginate, sides 

 patent, lobes of lower lip nearly equal intermediate lobe rather 



