TAB. 84. 



Tribe OphrydE/E. 



Sub-tribe DlSE^. 



Genus DiSA. 



Disa polygonoides, Lindley Gen. & Sp. Orch. (1838) 349 ; 

 Hook f. Bot. Mag. t. 6532.— Herba erecta g-Iabra, 20-46 cm. alta ; 

 caulis strictus subvalidus foliatus ; folia " radicalia e gemma 

 distincta ad basin caulis " (ex Schlechter) erecto-patentia lineari- 

 lanceolata acuminata, in vaginas transeuntia, 9-30 cm. longa ; 

 spica cylindrica, 4-10 cm. longa 2-2-5 cm. diam. dense multiflora, 

 floribus adscendentibus ; bractae submembranaceae ovato-lanceo- 

 latae acuminatae floribus breviores ; sepala lateralia patenti-deflexa 

 oblonga obtusa, 0-6 cm. longa ; sepalum impar erectum cacullato- 

 galeatum, ore obovato-elliptico, dorso supra basin in calcar 

 dependens clavatum limbo paullo brevius productum ; petala 

 erecta spathulato-obovata, 0-4 cm. longa ; labellum deflexum 

 lineare obtusum, petalis subgequilongum ; rostellum erectum 

 31obum, glanduliferis brevissimis, intermedio majore obtuso ; 

 anthera erecta. {Ex exempt, unico vivo, pluribusqiie exsiccatis.) 

 — D, natalensis, Lindley in Hook, Lond. Joicrn. Bot. I. (1842) p, i6, 



Hab. : South-eastern Region ; Cape Colony : Marshy places 

 near Grahamstown, alt. 610 met., fl, Dec, MacOwan, 357 ; grassy 

 hills near the mouth of the Kei R., alt. 60 met., fl. Jan., 

 H. G. Ftanagan, 528, R. Schtechter, 6205 ; between Umtata and 

 St. John's R., alt. 305-610 met., fl. Feb., Drdge. Natal: near 

 Durban, alt. 30 met., fl. Sept.,/. Wytie, 18 in herb. Wood. Zulu- 

 land, Ngoya, alt. 610 met., fl. April, Wytie (No. 7600! in herb. 

 Wood). Trans-Vaal : in marsh near Donkerhoek, alt. 1500 met., 

 fl. Nov., R. Schtechter, 3717 ! 



Plate 84. Fig. 1 , flower, front view ; 2, ditto, side view ; 

 3, odd sepal, front view ; 4, one of the petals ; 5, column, wiih 

 one of the petals ; 6, column, front view ; 7, one of the pollinia. 



An erect glabrous herb, 20-45 cm. high ; stem straight, rather 

 stout, leafy ; leaves (" the radical, from a distinct bud at the base 

 of the stem " — according to Mr. Sclitechter, which I have not had 

 an opportunity of verifying. My specimens do not shew it, but I 

 do not in any way doubt the correctness of the statement) — erect- 



