TAB. 78. 



'J'ribc Ophhydk.k. 



Sub-tribe DiSE.K. 



Genus DiSA. 



Disa oreophila, Dolus in Journ. Linn. Sor., vol. xxv. (1H90), 

 170. — Herba erecta vel subdecumbens gracilis g-labra, 10-85 cm. 

 alta ; caulis tenuis subrectus vel flexuosus foliatus ; folia erecta 

 rit^idula i^raminoidea anifuste-linearia acuta, basi vai^inantia 

 nervata, sursuin sensim minora, ad 2;") cm. lont^a ; spica laxe 3-25 

 flora, floribus in genere inter minores ; bracteaj erecto-patentes 

 membranacece lanceolattt acuminata; sa^pius floribus breviores ; 

 sepala lateralia ovalia obtusissima, sub apice mucronulata, patenti- 

 deflexa, 0-5 cm. long-a ; sepalum impar erectum i^aleatum obtusum, 

 ore oblong-o, dorso in calcar horizontale vel eleganter decurvum 

 filiforme obtusum, 0-5-0'8 cm. long-um productum ; petala erecta 

 oblique oblong-a obtusa, apicem versus marg-ine inflexa, basi antice 

 ampliata rotundataque, O'i cm. long-um ; labellum porrectum 

 lig-ulato-oblong-um apice parum latius obtusum subundulatum, 

 O-G cm. long-um ; rostellum erectum subtruncatum ; anthera 

 horizontalis ; ovarium rectum g-racillimum, 1 cm. long^um. {£x 

 exempli, plur. viv. exsiccafisque.) 



Hab. : South-eastern Region ; Cafe Colony : Tembuland 

 in g-raminosis, Eng-cobo Mt., alt. 1870 met., fl. Jan. (1896), Bohcs, 

 8737. Griqualand East : rocky places, Insiswa Mt., alt. 

 2070 met., fl. Jan. (1895), 7^. Schlechier, 6488 ! in my herb. ; rocky 

 places, summit of Mt. Currie, Griqualand East, alt. 2800 met., fl. 

 Feb., Tyson, 1078, in my herb. — Natal: Oliver's Hoek Pass, 

 fl. Jan.,/. M. Wood, 8418! 



Plate 78. Fig^. 1, flower, front view; 2, ditto, side view; 

 8, lip ; 1, column with one petal, side view — all variously 

 mag;nified. 



An erect or subdecumbent slender, glabrous herb, 10-35 cm. 

 hig-h ; stem slender, rather straight, or flexuous, leafy ; leaves 

 erect, rig^id, grass-like, narrow linear, acute, sheathing- at base, 

 nerved, becoming g-radually smaller, upwards, in leng-th attaining 

 25 cm. ; spike laxly 3-25flowered, flowers among the smaller ones 

 in the genus ; bracts erect-spreading, membranous, lanceolate 



