O ROB AN C II A C E M . 193 
below the constriction in the corolla-tube; filaments sub-glabrous; 
anthers not hairy on the sutures. Stigma white. 
Parasitical on Achillaea Millefolium. Hare. In Hertfordshire; 
the Isle of Wight ; Penzance, Cornwall; Norfolk; Chepstow, 
Monmouth. I have collected it only in Jersey, where it is abun- 
dant, apparently preferring the tops of walls which have a turf 
coping. 
England. Perennial. Summer. 
Stem 6 inches to 1 foot high, tough, with strapshaped lanceolate 
scales towards the base, which is not conspicuously dilated. Plowcrs 
f to linch long, dull bluish-purple with darker stripes ; the base of 
the under lip nearly white. Plant glandular-pubescent, especially 
in the upper part, with longer hairs on the inside of the lower lip. 
O. caerulea comes very near to O. ar en aria, but is smaller, with 
the corolla-tube more curved and less enlarged towards the apex, 
and the lobes of the lower lip are much more acute ; the anthers 
without a line of hairs at the sutures ; the stigma is waxy-white, 
while in O. arenaria, of which I have not seen fresh specimens, it 
is said to be yellow or orange. 
Purple Broom-rape. 
French, Orobanche Bleue. German, Blauliche Soimtierwurz. 
This plant is found chiefly near the sea, and is parasitic on various herbaceous 
plants. 
Sub-Genus II.— EU-OPOBANCIIE. (Orobanche, C. A. Meyer) 
Elowers each with a single bract beneath it, but no lateral 
ones. Calyx of 2 separate portions, divided from each other to 
the base on the upper and under side, each portion frequently 
2-cleft. Stem unbranched, or only accidentally so. 
SPECIES I V.— O ROBANCHE RAPUM. Thuill 
Plate MX. 
Reich. Ic. PL Germ, et Helv. Vol. XX. Tab MDC< LXXVIII. 
O. major, "Linn." Sm. Eng. Bot. No. 421. Hook. & Am. Brit. FL ed. viii. p. 300. 
Benlh. Handbook Brit. M. p. 386. 
Flowers ascending, erect. Bracts more or less exceeding the 
flouers. Sepals bifid, more rarely entire, about as long as the 
tube of the corolla ; upper segment with a strong mid-vein and 
an inconspicuous one on each side of it. Corolla pubescent with 
vol. vi. 2 c 
