TAB. 37. 



Tribe Ophrydeje. 



Sub-tribe Dise^. 



Genus Disa. 



Disa graminifolia, Ker, m Journ. Sci. R. Inst. Lond., vol. vi, p. 44, 

 t. 1, /. 2 (1819)— (§ Herscbelia).— Glabra erecta, 80-60 cm. alta ; 

 tubera oblonga vel ovata, ad 4 cm. longa ; folia 4-6, radicalia linearia 

 graminoidea laxa, scapo breviora ; scapus gracilis rigidus, vaginis acutis 

 membranaceis vestitus ; racemus laxe 3-6-fl., bracteis lanceolatis 

 acuminatis ovario bre^'ioribus ; sepala lateralia oblonga obtusa, sub 

 apice mucronulata, patentia circa 1-6 cm. longa; sepalum impar 

 galeatum erectum emarginatum, ore lato subrotundo, lateralibus sub- 

 pequilongum, calcare brevi inflato borizontali, 4 mill, longo; petala 

 basin versus oblonga rotundata, deinde subito geniculato-inflexa, apicem 

 versus rotundato-dilatata ; labellum oblongum obtusum undulatum 

 patens demum angulato-revolutum ; antbera reclinata ; glandula 

 saepius imica oblonga (rarius 2) ; rostellum trifidum erectum ; ovarium 

 cylindrico-clavatum, 1-1 -2 cm. longum. (£".1; e.rempU. phir. viv.) 

 Herschelia coe testis, Lindley, Gen. a- Sp. Orch. p. 362 (1838) ; Eeichen- 

 hach fil. in Orchidoyrapliia Eiiropecp, t. 2, ff. 18, 19, 20 (analysis) ; 

 Bohis, in Journ. Linn. Soc. (Bot.) vol. xix, p. 234 (1882). 



Hab: South-western Region; C.vpe Colony: Table Mt., on 

 tbe sides and top, alt. from 300 to 1100 met., fl. Febr. -March, 

 common, Herb. Xorm. Aust.-Afr., 167 ; mts. about Genadendal, and 

 near Swellendam, 300-400 met., fl. Jan., Bolw^. 



Plate 37. Fig. 1, side sepals; 2, odd sepal; 3, a petal, — all the 

 foregoing magnified 2 diameters; 4, lip, mag. 3 diams. ; 5, flower, the 

 sepals removed, mag. 2 diams. ; 6, 7, column, back and front view ; 

 8, 9, 10, ditto, the poUinia and gland being removed, back, front, and 

 side view; 11, pollinarium, — all the latter variously magnified. 



Glabrous erect, 30-60 em. high ; tubers oblong or obovate, 

 2-4 cm. long ; leaves 4-6, radical linear grass-like lax, shorter 

 than the scai:e ; scape slender rigid, with acute membranous 

 closely-clasping sheaths ; raceme laxlv 3-6-fl., bracts lanceolate 

 acuminate, shorter than the ovarv ; side sepals oblong obtuse, 

 mucronulate below the apex, spreading, about 1"6 cm. long ; odd 

 sepal galeate erect emarginate, mouth wide and round, about as 

 long as the side sepals, with a short inflated horizontal spur, 4 



