190 ORCHIDS OF THE CAPE PENINSULA. 
margin or posterior face; pollinia solitary in each cell, the gland 
situate at or near the apex of the rostellary arms. Stigma bilobed, or 
stigmas two, lateral, pulvinate, situate below (i.e., at the apex of) the 
anther-cells. Capsule cylindrical, ribbed.—Terrestrial herbs, turning 
black in drying, with several cylindrical root-like, tomentose tubers, 
linear, setaceous, sheathing leaves, yellow, or white and red flowers in 
few-flowered loose racemes, dense spikes, or subcapitate; bracts 
shorter than the flowers. (Name from x<pes, a horn, and aynp, a man,— 
in allusion to the horn-like anther-cells.) 
This genus is very closely allied to the preceding, and the only 
absolute distinction is the nearly flat, never hooded, cohering odd 
sepal and petals. These are mostly spreading or deflexed, and the 
appendage of the lip is sometimes obsolete, or nearly so; whereas in 
Pterygodium the cohering odd sepal and petals are always erect, and 
the appendage of the lip is invariably well-developed. The character 
of the elongated rostellary arms upon which Lindley chiefly relied is 
subject to exceptions; in three species, at least, itis wanting. Two 
of these, if they had hooded flowers, would be indistinguishable from 
Pterygodium, while the third species has a column very similar to that 
of Corycium eacisum. There are, however, three species with which I 
am unacquainted in the living state. The Peninsular species fall into 
two sections, characterised by the arms of the rostellum being pro- 
duced, or abbreviated. 
DistRIBUTION.—Seven species have been described, as here admitted, 
and there are two others as yet unpublished. All are natives of the 
South-Western Region of the Colony, except one which belongs to the 
Kastern districts. 
KEY TO THE SPECIES. 
* Arms of the rostellum laterally dilated, not elongated ; appendage 
of the lip large. 
Appendage of the lip with two long horns .. . C. BIconor 1. 
r + without horns, expanded onerone . OC. Harveyana 2. 
** Arms of the rostellum elongated, ascending ; appendage of the 
lip small or none. 
Lip anticous. 
Side lobes of the limb of the = pee flowers 
mediocre, red and white : .. C. GLoBosa 3. 
Side lobes of the limb of the lip satis aoe mal C. PARVIFLORA 4. 
Lip posticous ; flowers large, yellow .. 40 ae . C. cHLOROLEUCA 5. 
1. Ceratandra bicolor, Sonder, according to Drege, in Linnea, 
vol. xx. (1847), p. 220 (the name only); Bolus, in Journ. Linn. Soc. 
