TAB. 86. 



Tribe OphrydE/E. 



Sub-tribe DlSE^. 



Genus DiSA. 



Disa venosa, Swarfs in Kongl. Vetensk. Acad. HandL^ vol. xxl. 

 (1800), 213, not of Lindl. — Herba erecta gracilis glabra, 20-50 cm. 

 alta ; caulis strictus vel flexuosus, basi foliatus; folia radicalia 3-4 

 oblonga acuta, 3-5 cm. longa ; caulina similia in vaginas sub remotas 

 acutas sensim transeuntia ; racemus laxe 2-4florus, floribus 

 adscendentibus ; bracteae erectse ovataj acuminatae, ovario paullo 

 longiores ; sepala lateralia patentia ovato-oblonga acuta, l"5-2 cm. 

 long-a ; sepalum impar erectum concavum subgaleatum ore rhom- 

 boideo-cuneatum, dorso infra medium saccatum ; petala erecta 

 oblonga, apice incurva dentataque, antice lobata, 0*9 cm. longa ; 

 labellum porrecto-deflexum lineare acutum, petalis subaequilongum; 

 rostellum erectum trilobum, g-landuliferis incurvis ideoque glandulis 

 oppositis, appendice petaloidea postice ornatis, intermedio obtuso 

 concavo ; anthera erecta. {Ex exempli, plur. viv. exsiccatisque.) 

 D. racemosa, Sw. var. venosa Schltr. in Engl. Bat. Jahrb., 

 vol. xxxi. (1902), p. 'm. 



Hab. : South-western Region ; C.^pe Colony : moist places 

 in sheltered ravines on the eastern slopes of the mountains of the 

 Cape Peninsula, alt. 610-914 met., fl. Dec, Harvey, Bolus, 4845, 

 R. Schlechter, 451 ; mountains near Du Toit's Kloof, alt. 610 met., 

 fl. Dec, Drege ; foot of the mountains round French Hoek, alt. 

 390 met., fl. Nov., Bolus, 5274, R. Schlechter, 9311 ! Krakadouw 

 Pass, Cederbergen, alt. 914 met., fl. Jan., C. L. Leipoldt, 603 ! 



Plate 86. Fig. 1, flower, side view ; 2, column and petals, 

 front view ; 3, odd sepal, front view ; 4, one of the petals ; 

 5, column, side view ; 6, one of the pollinia. 



An erect slender glabrous herb, 20-50 cm. high ; stem straight 

 or flexuose, leafy at the base ; radical leaves 3-4 oblong acute, 

 3-5 cm. long-, cauline similar, gradually passing off into the rather 

 remote acute sheaths ; raceme laxly 2-4 flowered, flowers ascending ; 

 bracts erect ovate acuminate, a little longer than the ovary ; lateral 

 sepals spreading ovate-oblong' acute, l"5-2 cm. long; odd sepal 



