PTERYGODIUM. 187 
nerved, 2-8 in. long, the upper gradually narrower and more acute, 
passing into closely-appressed sheaths with free, membranous, acumi- 
nate points ; raceme somewhat dense, in the larger specimens many- 
flowered and 4 in. long, bracts lanceolate, enwrapping the ovary, 
shorter than the flowers; sepals lanceolate, acuminate, concave, the 
lateral ascending and mostly hidden behind the petals; petals nearly 
semiorbicular, concave, the outer margin irregularly notched, the hood 
about 6 lines wide; limb of the lip somewhat oblong, bilobed, the 
margin rounded and crenulate, about 9 lines wide, 3-4 lines long, the 
appendage nearly square in section, arched at the apex, and hollowed 
below it in front into two depressions divided by a narrow septum ; 
rostellum horizontal; stigmas two. Thunberg, Flor. Cap., ed. 1828, 
p. 23; Ophrys caffra, Thunberg, Prodr. Plant. Capens. (1794), p. 2. 
Has. Open places at the foot of Table Mt., on the east side; also on the 
Muizenberg, 200—800 ft., fl. Noy., Bolus, in Herb. Norm. Austr.-Afr., 176.—Extends 
to Somerset West, Paarl, and Groene Kloof. Zeyher, 3940; Drege, 1254. 
The flowers are a bright but not deep yellow. The habit is like 
that of P. acutifolium, but the raceme is usually more numerously and 
densely flowered. In floral structure its nearest ally is P. alatum, to 
which, indeed, it is closely related; but the habit is entirely different. 
The likeness of the appendage of the lip to the column of some 
Angrecum, both in form and position, is very curious. Lindley speaks 
of a tooth or mucro between the lobes of the limb of the lip; this 
occurs in P. alatum, but I have not found it in this species. It is not 
frequent on the Peninsula; but when it occurs, is usually in numbers 
of one or two dozen plants. 
PratE 22.—Fig. 22, column, magnified, showing a, one of the cells of the anther, 
g, the gland, s, one of the stigmas. 
6. Pterygodium alatum, Swartz, in Kongl. Vetensk. Acad. Handl., 
vol. xxi. (1800), p. 218.—Three to six inches high; stem leafy, some- 
what slender, nearly straight; leaves 4-7, mostly radical, lanceolate, 
acuminate, spreading, sometimes waved and twisted, the lower 1-2 in. 
long, succeeded by 3-4 more erect, shorter, loose sheaths; raceme 
usually lax, 4-12-flowered, the flowers spreading, about 5 lines wide, 
bracts ovate, acute, as long as the ovary; sepals nearly equal and 
similar, lanceolate, acuminate ; petals rhomboidal or cuneate-obovate, 
concave, the outer margins crisped, and irregularly crenulate; limb 
of the lip almost exactly like that of P. caffrum, but smaller, and with 
a sharp tooth-like point between the two lobes, the appendage erect, 
rather narrow, with two large lateral lobes and an arched summit 
hollowed in front; arms of the rostellum ascending; anther cells very 
short. Ker, in Journ. Sci. R. Inst., vol. viii. (1820), t. 8, f. 2; Thun- 
berg, Flor. Cap., ed. 1828, p. 24. Ophrys alata, Thunberg, Prodr. 
Pl. Cap., p. 2. I 
