CXXII. ORCniDACEiE. 365 



23. SATYRIDIUM, Liiidl. 



Perianth rin^cnt, the lower lip formed by the auhsimilar 

 sepals and petals ; the upper by the funnel-shaped, 2-spurred, 

 acuminate labellum. Column slender, free. Anther straight, 

 resu])inate, with parallel cells. 8tigma minute, truncate, at 

 the apex of the column. Caudicles connate, attached to a 

 single gland. — Lindl. Orch. p. 345 ; Harv. Thes. t. 87. 

 A single species, with the habit of Satyrium. — Western district. 



24. AVICEPS, Lindl. 

 Perianth ringent, the lower lip 3-toothed, formed of the 3 

 cohering sepals ; the upper of the helmet-sha])ed, 2-saccate 

 labellum. Petals none. Column terete, elongate, hidden 

 under the galea. Stigma 2-lipped, the upper lip very large, 

 emarginate ; the lower on each side produced into an arm-like 

 process. Anther resupinate. Caudicles nude, lying along the 

 arms of stigma ; glands nude. — Lindl. Orch. p. 345. 



A small, densely-leafy plant. Flowers axillary, hid among the upper 

 leaves. Known from the saccate species of Satyrium by the absence of 

 petals. — Western districts, rare. 



25. DISA, Linn. 



Perianth ringent, the upper lip formed of the helmet- or 

 funnel-shaped, spurred or saccate odd sepal ; the lower lip 

 formed by the two flat, spreading lateral sepals and the label- 

 lum. Petals small, erect, adhering to the base of the column. 

 Labellum free, filiform or dilated, entire or multifid, spurless. 

 Column 2-parted (the anther and stigma separated). Anther 

 2-celled, erect or supine ; with 2 distant, nude glands. Stigma 

 truncate or convex, with an obscurely 3-lobed disk, often tu- 

 bercular, at the base of the column. — Lindl. Orch. p. 346 ; 

 Harv. Thes. t. 41, 85, 86. 



A large genus, dispersed through the colony and in Natal, including the 

 finest of the Cape Orchids, as well as some of the humblest. Habit various; 

 leaves either all radical or radical and cauline. Flowers mostly spiked, 

 rarely solitary. D. grandiflora, the glory of Table Mountain, has flowers 

 3-5 inches across. 



26. BROWNLEEA, Harv. 



Perianth ringent, the upper lip formed of the galeate 

 spurred odd sepal, and of the two petals whose inner margins 

 adhere to it ; lower, of the two spreading. Hat, lateral sepals. 

 Labellum minute, inflexed, filiform, its base expanded, and ad- 

 hering at each side to the column, forming therewith a little 

 pocket. Anther ascending, 2-lobed. — Lindl. in Hook. Lond. 

 Journ. Bot. i. p. 16 ; Harv. Thes. t. 103, 104. 



