TAB. 33. 



Tribe Ophryde^. 



Sub-tribe Dise^. 



Genus Disa. 



Disa torta, Su-artz, in Komjl. Tetenslt. Acad. Sya HanU., vol. xxi, 

 p. 211 (1800). — (§ Schizodium) — Scapus erectus gracilis rigidus, valde 

 flexus, 2-3 cm. altus, vaginis foliaceis subcucullatis lanceolatis 3-4 ad 

 intemodia vestitus ; folia saepius 4 radicalia rosulata bn nil strata 

 spatbulata acuta, 1-1*4 cm. longa ; racemus laxe 1— 4-florus ; sepala 

 lateralia arcuato-patentia linearia acuminatissima, margine incurvo, 

 basin versus unideutato, 1-6-1-8 cm. longa ; sepalum impar subcon- 

 forme brevius recurvum, calcare horizontali vel adscendente compresso 

 retuso quam limbo breviori auctum ; petala basicolumna? adnata auri- 

 culata, deinde postice genuflexa, sursum lineari-falcata recurva bifida ; 

 labellum subpanduraeforme, bypocbilium inflato-concavum ovatum 

 erectum, mesocbilium ovatum eamosum deflesum, marginibus inflexis 

 erosulis, intus papillis minutis conspersmn, in epicbilium filiforme 

 rostriforme canaliculatum 4-8 mill, longiim desinens. (Ex exempli, 

 plin: lir. exsiccatisque). Orchis biffora, Linnaxis, Spec. Plant, ed. 2, p. 

 1330 (1763); Satyrium tortum, Thunberg, Prodr. Plant. Cap. p. 5 

 (1794) ; Schizodium arcuatum, Lindley, Gen. <& Sp. Orch.p. 359 (1838). 



Hab: South-western Region; Cape Coloxy : on tbe summit 

 of tbe mountain near Constantia, Cape Peninsula, alt. 650 met., fl. 

 Sept., Eraiiss, 1326 (fide Meisner in " Flora " for 1845, p. 306) ; Paarl 

 and Greene Kloof, Drege ; Stellenbosch, Aug., Miss Farniiam, Herb. 

 Norm. Austr..Afr., 1376 ; Valley of tbe Bot R., alt. 125 met., July, 

 Bolus, 5444 ; Artois near Tulbagb, alt. 180 met., Aug., ih. 5445. 



Plate 33. Fig. 1, flower ; 2, odd sepal ; 3, 4, lip,— all tbe fore- 

 going magnified 3 diameters ; 5, column -svitb petals, front view ; 6, 

 ditto, side view ; 7, one of tbe petals, — all tbe latter magnified 6 diam. ; 

 8, column, viewed posteriorly, tbe pollinia removed ; 9, pollinia, — all 

 tbe last variously magnified. 



Scape erect slender wiiy rigid, much bent at the internodes, 

 7-20 cm. high, clothed with a few herbaceous somewhat cucullate 

 lanceolate sheaths ; leaves radical usually 4, rosulate spathulate 

 acute, lying flat upon the ground, 1-1*4 cm. long; raceme 

 loosely 2-3-fl. ; side sepals linear very much acuminate, arched 



