198 ENGLISH BOTANY. 



towards the base, tlieir upper lialf and the style sub-glabrous. 

 Stigma of 2 divaricate lobes, purple. 



Parasitical on the roots of Picris hieracioides. Local. Rose- 

 Hall Green, Presh water Cliffs, Isle of Wight ; very abundant on 

 the undercliff between St. Margaret's Bay and Kingsdown, South 

 Kent ; about Comberton and Caxton, Cambridgeshire ; Tenby, 

 Pembrokeshire. Probably frequently passed over as 0. minor. 



England. Perennial. Summer. 



Stem 6 inches to 2 feet high, white or tinged with pale-purple, 

 yellowish. Plowers in a dense spike, f inch long, cream-white, 

 more or less suffused with light-purple or faintly streaked with 

 purple, yellowish before expansion ; the upper lip, which is erect, 

 has a fold in the middle, as pointed out by the late Dr. Bromfield, 

 which gives it the appearance of being notched, although it is 

 really entire. 



This is the palest-coloured of all the British Orobanches, the 

 whole plant, including the flowers, appearing white at a little 

 distance. 



JPicris Broom-rape. 



French, Orohanche de la Ficride Gei'man, Bitterkraut So7nmerwurz. 



SPECIES IX —O ROBANCHE HEDER-SI. Duby. 



Platk MXV. 



Jieich. Ic. Fl. Germ, et Helv. Vol. XX. Tab. MDCCCIII. 



JJillot, FI. Gall, et Germ. Exsicc. No. 2334. 



O. barbata, £ab. ia E. B. S. No. 2859 (uon Foir). 



Plowers spreading. Bracts as long or longer than the flowers. 

 Sepals about as long as the tube of the corolla, entire or more 

 rarely 2-cleft ; the upper segment with 1 conspicuous nerve, 

 generally with an indistinct one on each side. Corolla pubescent 

 with gland-tipped hairs ; tube rather narrowly cylindrical, slightly 

 curved, with the curvature greatest towards the base ; upper lip 

 notched, with the margins slightly spreading ; lower lip 3-lobed, 

 with the middle lobe larger than the others ; all crimped and 

 sharply denticulate. Stamens inserted a little below the middle 

 of the corolla-tube ; filaments very slightly hairy on the inner side 

 towards the base ; tlieir upper half and the style sub-glabrous. 

 Stigma of 2 contiguous lobes, yellow. 



Parasitical upon ivy. Local, but occurring in most of the 

 South and Western counties, from the Isle of Wight to Cornwall, 



