TAB. 66. 



Tribe OPHRYDE.E. 



Siih-tribe DlSE.4<:. 



Genus DiSA. 



Disa bivalvata, Dnr. & Schinz in Conspcct. Fhr. Afr.^ rol. v. 

 (1895), 100. — Herba erecta glabra 10-35 cm. alta ; caulis strictus 

 vel subflexuosus ; folia radicalia 4-8 vel plura erecta lineari- 

 lanceolata acuminata, 2-7 cm. long-a, caulinis in vag-inas acuminatas 

 transeuntibus ; racemus corymbosus, 3-15florus, 2-6 cm. diametro ; 

 bracteas erectae herbacere lanceolatae acutae ovario saepius bre- 

 viores ; sepala lateralia patentia ovato-oblong-a obtusiuscula sub 

 apice mucronata, l'l-l-4 cm. long-a ; imparl licrizontali resupinato 

 cucullalo, apicem versus compresso carinatoque, basi angustato 

 ecalcarato ; petala resupinata e basi unguiculata oblonga, apice 

 incurva lacerato-dentata, O'8-l cm. longa ; labellum posticum 

 porrectum subulatum acutum vel acuminatum, basin versus bilobu- 

 latum breviter unguiculatum, petalis aequilongum ; rostellum 

 apice Sfidum, lobo intermedio resupinato, lateralibus glanduliferis 

 breviore ; anthera sub petala subtecta. [Ex exenipl. nnico 

 phiribnsque exsiccatis.) — QphrijS biualuata, Linn. Jil. SuppL (1781), 

 p. 403 ; Serapias me/a/euca, Thunb. Prodr. PL Cap. (1794), p. 8 ; 

 Penthea melaleuca, Lindl., Gen. & Sp. Orch. (1836), 361; Disa 

 melaleuca, Swarls in Kongl. Vet. Acad. HandL, vol. xxi. (1800), 

 p. 213 ; Hart'. Thcs. Cap., vol. i. (1859), />. 53, fab. H4. 



Hab- : South-western Region ; Mts. in the Cape Peninsula, 

 frequent, in moist grassy places, 396-1005 met., fl. Dec, Buj-che/l, 

 651 ; Bolus, 4208 ; R. Schlechler, 148 ; IVolley-Dod 2095 ; and 

 maity other collectors. Witsenberg and Schurfdeberg, fl. Dec, 

 Zeyher; Du Toit's Kloof, alt. 914-1219 met., Drege ; foot of the 

 Langebergen, fl. Dec, Biirchcll, 6855 ; Corente R. farm. dist. 

 Riversdale, fl. Dec, Dr. /no. Muir ! (No. 5347 in herb. Galpin !) ; 

 Storms R. dist., Humansdorp, alt. 61 met , fl. Nov., i'?. Schlcchtcr, 



Plate 66, Fig. 1, flower, side view; 2, ditto, viewed from 

 above ; 3, odd sepal ; 4, one of the petals ; 5, lip ; 6, column wtth 

 petals ; 7, column, side view. 



An erect glabrous herb, 10-35 cm. high ; stem straight or sub- 

 flexuous ; radical leaves 4-8 or more, erect linear-lanceolate 



