TAB. 75. 



Tribe Ol'HRYUE.E. 



Sub-tribe DiSE.E. 



Genus DiSA. 



Disa Schlechteriana, Bolus in Trans. S. A. Philosoph. Soc, 

 vol. xvi., pufl 2, p. 149 (1905).— Herba erecta g-laberrima, ad 

 55 cm. alta ; folia radicalia 7-11, erecta liiiearia acuminata rigida 

 prominenter nervata, 80 cm, long-a, 0'l-0-2 cm. lata ; scapus sub- 

 strictus, vag-inis membranaceis acuminatis arete amplectentibus, 

 marg-inibus basi longe connatis, distanter vestitus ; bracteai 

 patentee membranaceai ovataj acuminatas venosEe, ovario breviores ; 

 racemus laxe 6-12florus, 8-14 cm. long-us, floribus in g-enere inter 

 majores, patentibus ; sepala lateralia patentia oblong-a acuta, 

 2*3 cm. longa ; sepalum impar erectum subgaleatum ovatum 

 acuminatum, apice recurvatum, ore ovato, 2-3 cm. longo, 1-5 cm. 

 lato, basi sensim in calcar filiforme eleg-anter decurvum, ad 4*8 cm. 

 long^um, ovarium exceden.s, productum ; petala minima resupinata, 

 e basi lata semi-orbiculari deinde ang-ustata, abruptc incurvo- 

 uncinata acuminata, altitudine rostellum vix supcrantia ; labellum 

 patulum oblong-o-lanceolatum acutum integ^rum, supra basin leviter 

 constrictum, l'8-2 cm. long-um ; anthera resupinata; pollinium 

 g-landulai discretai ; rostellum erectum subelong-atum, leviter in- 

 curvum, oblongum, apice tridentatum ; stig-ma pulviniforme ; 

 capsula erecta clavato-cylindrica, ad 3-8 cm. long-a. {Ex exempli, 

 pliir. vi'v.) 



Hab. : South-western Region ; Cape Colony : Riversdale 

 Division, between Garcia's Pass and Muis Kraal, on rocky 

 mountain sides, alt. about 550 met., fl. Dec. (1904), Mrs. C. Luyt 

 (No. 10571 in my herb.) 



Plate 75. Fig^ 1, flower, front view ; 2, one of the side 

 sepals, nat. size ; 3, odd sepal ; 4, one of the petals ; 5, 6, lip 

 from different flowers, front view, nat. size ; 7, ditto, side view, 

 n.s. ; 8, column with one petal; 9, column, front view; 

 10, section throug^h one of the leaves — all the latter variously 

 mag"nified. 



An erect g^labrous herb, up to 55 cm. high ; leaves radical 7-11, 

 erect linear acuminate rig-id, prominently nerved, 30 cm. long^, 



