TAB. 48. 



Tribe OPHRYDEJL. 



Sub-tribe DlSE^. 



Genus DiSA. 



Disa tenuicornis, Bolus, in Jour n. Linn. Soc.,vol. xxii. (1885), 

 p. 68. — Herba erecta g'labra, 15-33 cm. alta ; caulis subflexuosus 

 foliatus, vaginis foliorum vestitus ; folia erecto-patentia vel 

 superiora erecta, linearia acuminata, basi dilatata membranacea, 

 caulem amplectantia, 6-12 cm. longa ; spica oblonga vel cylindrica, 

 subdensa, 5-15 cm. longa ; bracteae ovatae cuspidato-acuminatae 

 membranaceae, reticulatse, inferiores Acres superantes, superiores 

 cequantes ; sepala lateralia patenti-deflexa, oblique ovata, sub- 

 falcata acuta, 1 cm. longa ; sepalum impar incumbens galeatum 

 obtusum, dorso basi bisacculatum, calcare patente vel ssepius 

 dependente, recto subfiliformi, 0*4-0'5 cm. longo, inter saccules 

 posito ; petala horizontalia oblonga, apice lobo falcato aucta, 

 columnse adnata ; labellum patenti-deflexum subulatum acutum, 

 sepalis lateralibus subaequilongum ; rostellum erectum breve 

 subintegrum, utrinque tuberculatum, glandulis approximatis ; 

 anthera horizontalis ; stigma excavatum ; ovarium cylindricum, 

 1*2 cm. longum. [Ex exe??iplL plur. viv. exsiccatisque.) Orch. 

 Cape Penins. (1888), i. 14. 



Hab. : South-western Region ; Cape Peninsula, in clefts of 

 rocks on the lower plateau of Table Mt., alt. 750 met., fl. Oct., 

 Boius, 4967! (Herb Norm. Aust.-Afr., 407.) Slopes of the Con- 

 stantiaberg, near Tokay, alt. ca. 710 met., fl. Oct.. A. Bodkin! 

 Matroosberg, fl. Oct.,/. D. C. Lamb! 



Plate 48. Fig. 1, flower, front view ; 2, ditto, oblique view ; 

 8, odd sepal ; 4, lip ; 5, side sepal — all mag. 3 diams. ; 6, side 

 petal ; 7, column with side petals ; 8, ditto, side view, with one 

 petal removed — variously magnified. 



An erect glabrous herb, 15-33 cm. high ; stem subflexuous 

 leafy, covered by the sheaths of the leaves ; leaves erect-spreading 

 or the upper ones erect, linear acuminate, dilated at base, mem- 

 branous, clasping the stem, 6-12 cm. long ; spike oblong or cylin- 

 drical, somewhat dense, 5-15 cm. long ; bracts ovate cuspidate- 

 acuminate membranous, reticulately veined, the lower ones 



