XCI. ()R()l?.\.NCirACE.10. 313 



:3. CISTANCHE, Hoffmgg. & Link. 



Scapigerous herbs ; scape or stem simple, scaly. Flowers in dense 

 spikes, yellow, violet, or purple ; bracteoles 2. Calyx broadly tubular- 

 campanulate ; lobes 5, subequal, obtuse. Corolla-tube long, curved, 

 dilated above ; limb spreading, oblique, with 5 broad subequal lobes. 

 JStamens 4, subexserted ; anthers subtransverse, often villous, the cells 

 equal, parallel, bases obtuse. Ovary 1-celled; placentas 4, equidist-aut 

 or in pairs ; stigma broad. Capsule ovoid, laterally compressed, 4- 

 valved to the base. Seeds numerous, subglobose, reticuLitely punctate. 

 — DiSTBiB. Mediterranean region, N". Africa ; Tropical, Western, and 

 Central Asia ; species 12. 



1. Cistanche tubulosa, Wight, Icon. t. 1420 bis (1S50). General 

 color of plant yellow v^'ith an occasional tijige of purple (Stocks) ; stem 

 |-5 ft. high, sometimes reaching 2 in. in diam,, unbranched, furrowed, 

 fleshy, glabrous or more or less pubescent, densely covered with tri- 

 angular acute scales. Flowers numerous, in dense spikes 6-10 in. lone, 

 sometimes 3 in. in diam. ; bracts lanceolate, with membranous margins, 

 acuminate, longer than the calyx ; bracteoles with membranous margins, 

 shorter than the calyx, linear-lanceolate. Calyx tubular-campanulate, 

 |-f in. long ; lobes about i as long as the tube, rounded, subequal, with 

 membranous margins, veined. Corolla yellow, hairy at the base inside, 

 1-2 in. long, the lower half tubular, erect, the upper half campanulate, 

 bent outwards from the middle ; limb shortly 5-lobed, the lobes rounded, 

 reflexed. Filaments woolly at the base ; anthers subexserted, woolly, 

 not or scarcely apiculate. Placentas 4, subequidistant. Stvle exserted, 

 curved below the stigma. Capsules 1 in. long, ovoid-oblong, laterally 

 compressed, beaked. Seeds numerous, subglobose, r^ in. in diam., 

 deeply pitted. Fl. B. I. v. 4, p. 324 ; Woodr. in Journ. Bomb. Nat. 

 v. 12 (1898) p. 175. Cistanche hitea., Wight, ill. v. 2, p. 180, t. 158 6, 

 fig. 4 {not of Hoffmgg. & Link). — Flowers : Dee. 



Scarcely differs from C. lutea, Hoffmgg. & Link, the apiculation of 

 the anthers being the distinctive character. This, however, in Tropical 

 African specimens, does not seem to be always a constant one. 



SiND : common, Stocks !, Balzell ! ; Karachi, Oman !, Cooke !, Constable I, Woodrow. 

 — DisTRiB. India (Paujab) ; Central Asia and westwards to Arabia. 



4. OROBANCHE, Linn. 



Scapigerous scaly herbs ; scapes or stems simple or branched, stout 

 or slender ; scales acute. Flowers in dense or lax or interrupted spikes 

 or racemes ; bracts scale-like ; bracteoles 2 or 0. Ca.lyx unequally 4-fid 

 or 2-partite from back to front, the segments entire or 2-fid with rarely 

 a 5th tooth or segment. Corolla 2-lipped ; tube curved, dilated above, 

 circumscissile below ; upper lip erect, crenulate, notched or 2-fid ; lower 

 somewhat spreading, 3-lobed. Stamens 4, didynamous, included ; anther- 

 cells equal, parallel, the bases usually mucronate. Disk or glandular. 

 Ovary 1-celled; placentas 4, equidistant or paired; ovules very many ; 

 style simple ; stigma funnel-shaped or peltate, or more or less laterally 

 2-lobed. Capsule 2-valved, the valves often cohering with the style. 

 Seeds very many, small, subglobose or ovoid. — Disteib. Chiefly in the 

 northern and subtropical regions of the Old World ; species about 100. 



TOL. II. Y 



