OROBANCHACE 93 
Order LXII.—OROBANCHACE., 
Brown leafless root-parasites; stem usually simple; 
flowers in spikes or racemes; sepals 4-5; corolla 2- 
lipped; stamens 4, didynamous; ovary I-celled; seeds 
numerous, minute. Widely distributed, chiefly in South- 
ern Europe and Eastern Asia; not alpine. 
I. OROBANCHE, L. 
Characters of the Order. The numerous species of 
Broom-Rape are best characterised by the plant on the 
root of which they carry on a parasitic growth. The 
following species are recorded from Switzerland :— 
O. minor, Sutt.; style violet; much the most common 
species ; on various plants, very commonly on clover. O. 
loricata, Rchb.; style yellow; on Artemisia campestris ; 
Valais. O. Picridis, Vauch.; whole plant very pale; on 
Picris. O. Scabiose, Koch; corolla yellow tinted with 
violet, covered with blackish tubercles; on Scadbzosa 
Columbaria, and on species of Carduus and Cirsium. 
O. epithymum, DC. (rubra, Sm.); flowers scented, corolla 
reddish-brown, covered with small brown tubercles; on 
Thymus, not uncommon. O. Zeucriz, Sch.; spike short, 
few-flowered; on Teucrium and Thymus. O. caryophyl- 
lacea, Sm. (Galiz, Vauch.) ; plant yellow, flowers scented ; 
on Galium. O. Frolichitz, Rchb.; on Petasttes albus ; 
Appenzell. O. flava, Mart.; upper lip of corolla with 
reflexed lobes; on species of Petasztes. O. Hedere, 
Vauch.; spike elongated; on ivy, frequent. O. Salvia, 
Sch.; corolla yellow; on Salvia glutinosa. O. lucorum, 
A. Br.; corolla brownish-yellow; on erberis; Engadine, 
