﻿0K0BANCHACE2E (Hiern & Stapf). 421 



Order XCVI. OROBANCHACE-S:. 



(By W. P. HiEEN and 0. Staff.) 



Flowers hermaphrodite, irregular. Calyx inferior, gamosepalous 

 with 2-5 lobes or teeth or divided into 2 lateral segments, bibracteo- 

 late at the base ; lobes open or valvate in bud. Corolla gamopeta- 

 lous, tubular ; tube cylindrical, ventricose or dilated above, stmight 

 or oftener incurved ; limb obliquely or rarely subequally spreading 

 or more or less bilabiate ; lobes usually broad and imbricate with the 

 two back ones interior. Stamens i, didynamous, usually included 

 and without any rudiment of a fifth ; filaments filiform or somewhat 

 thickened, inserted inside below the middle of the corolla-tube, 

 alternating with four of the lobes ; anthers all or in pairs conniyeut 

 under the posterior corolla-lip or top of tube, dorsifixed, J-celled 

 cells usually equal and parallel, mucronate or blunt ; rarely one ot 

 the cells of the anterior anthers or of all of them empty subulate- 

 acuminate or broadly club-shaped. Hypogynous dislc obscure or 

 rarely produced in front into an ovoid or broad and short giana. 

 Ovary superior, usually broad at the base, 1 -celled ; carpels A or 

 abnormally 3, placed front and back; placentas 4, parieta , covered 

 almost all over with numerous anatropous ovules; style simple, 

 terminal, bilobed, papillose above. Capsule superior usually in- 

 cluded in the calyx, 1-eelled, dehiscing by 2 placentiferous valves. 

 Seeds very numerous, small, usually subglobose ; testa /oveo ate- 

 reticularorstriate-rugose; albumen fleshy; embryo near the hi lum, 

 minute. 



Herbs parasitic on roots, usually thickened at f '^ „ ^^^ ,f "^ rcrfronr^e 

 imbricate scales, variously coloured but not green ? «^"»« "//'^'Xi scalv Teaves 

 base, short or elongated, simple or somewhat branched, "^'^^ °f^^;';^ "£',.,'u« of 

 reduced to scales, alternate, the upper bract-hke; A^^^^^.^f ^^^'^y/^.r t^;^ Uml 

 the bract-like scales, sessile or pedicellate, few or crowded m dense tcumua 



spikes 



iTKiB. Species IOC 

 tropical Asia, and 



I. OROBANCHE, Tournef. 



dTstkib. Species 100 or rather more, chiefly inhabiting Europe. North Africa, 

 extra-tropical Asia, and North America. 



1. WJ\V/JJ^«v/A*— , 



Calyx persistent, unequally or equally '^r^^-f^^'^Tj^^tt 

 or divided to the base at the back and front ^"^^^^^^^^^f/Sed 

 unequally bifid or rarely entire, a fifth smaller lobe ^emg rarefy a'^l^ed 

 at the back ; all the lobes or segments ^^^^^^^^^e th n nd britUe 

 the dried state. Corolla widened at the throat. ^^-J^l tr.S; 

 bilabiate, marcescent ; upper lip bipartite, ^^6^, marg.nate or^ntire 

 lower lip' 3-lobed; lobes separated by ?----* ^olds. ^'^Ld 

 didynamous, included; Sl^'^^^'; ,"l".f ^^Sr^^^^^^ 



CTv^ia' :; 4SS err ^^ ^^ - - 



