134 ORCHIDS OF THE CAPE PENINSULA. 
The colour of the flowers is lilac, with large spots of dark purple 
on the front of the galea and the inside of the spurs; the anther 
bright carmine. The species is a very pretty and elegant one, unlike 
any other, and was regarded by Lindley as the type of a distinct 
genus. But, excepting the union of the caudicles of the pollinia into 
a single gland, the peculiar difference lies in the appearance of the 
column, and this is due merely to the pushing-up of parts (the gland, 
the rostellum, and the stigma), which are usually depressed or hori- 
zontal; the same relative position is maintained, but, instead of the 
rostellum and stigma facing the observer in front of the flower, they 
are hidden behind the anther. In uniting it with Satyrium I follow 
Bentham (‘Genera Plantarum,’ vol. ui., p. 629). The species is not a 
very common one on the Cape Peninsula, and was not indeed recorded 
there until its discovery by Prof. Bodkin in Dec., 1882. In 1884, 
however, it was tolerably plentiful on the Steenberg, by the ‘‘ Silver- 
Mine”’ stream. 
Prats 25.—Fig. 1, flower, x 2 diameters; 2, ditto, x 3; 3, lip, x 4; 4, sepals, 
x 3; 5, petals, x 3; 6, 7, 8, column, showing g, the gland, s, stigma; 9, apex of 
column showing pollen-granules adhering to the stigma, s, and the very short 
ridge-like rostellum above, 7; 10, pollinia; 11, section of ovary; all the latter 
variously magnified. 
VI.—DISA. 
Bergius, in Descr. Plant. Cap. B. Spei (1767), 848; Bentham & Hooker f. ; 
Gen. Plant., ii. (1888), 680. (Monadenia, Lindley, Gen. Sp. 
Orch. (1838), 856; Schizodium, ib., 858; Penthea, ib., in part, 
l.c., 860; Herschelia, ib., 862.) 
Sepals nearly equal in length, free; the odd one usually posticous, 
more rarely anticous, galeate, vaulted, or nearly flat, spurred, saccate, 
or umbonate. Petals very various in shape, usually much smaller than 
the sepals, and often included within the odd sepal, free or adnate to 
the column at base. Lip anticous or more rarely posticous, spreading 
from the base of the column and more or less adnate to it, various in 
shape, usually much smaller than the sepals (never spurred), sessile or 
clawed, the limb entire, variously cut, or deeply fringed. Column 
bilobed; rostellum large and erect, or small and depressed, subentire, 
three-toothed or bilobed at the apex with parallel or divaricate arms, 
tuberculate on either side at base, or with lateral folds, which are 
sometimes petaloid and project posteriorly under the clinandrium ; 
stigma situate in front of, and separated from, the clinandrium by the 
rostellum, fleshy, usually cushioned, rarely depressed. Anther with 
the clinandrium ascending, horizontal or reflexed, adnate to the 
rostellum at base, the cells distinct and parallel; pollinia solitary 
in each cell, loosely granular, attached by longer or shorter caudicles 
