specimens from Kalberg on the Eastern frontier (from Mr. 
Henry Ilutton), from Natal (Mrs. Fannier), Somerset, 
Kaffraria (Mr. Cooper), and from the top of Bosch berg, 
alt. 4500 feet (Mr. MacOwan.) 
As to Disa macrantha of Thunberg, it is clearly a species 
very near to D. cornuta, if not a variety of that plant ; there 
are numerous specimens thus named in the Kew Herbaria, 
amongst them one from the sands about Salt river, near 
Capetown, collected by Dr. Harvey, who has appended to 
it a ticket with “ D. macrantha of Thunberg. Differs from 
D. cornuta merely in its labellum. I consider it only a 
variety, yet its habit is different.” Whatever the difference 
‘of habit is, it is lost in the drying; for the specimen is in 
this state undistinguishable from D. cornuta, and, like it, 
has flowers not half the size of those of D. megaceras, with 
minute included petals. 
Iam indebted to Mr. Elwes for the fine flowering speci- 
men of M. megaceras here figured, which flowered with him 
to August of the present year. 
Descr. Stem one to two feet high, often as thick as the 
thumb, robust, leafy. Leaves six to eight inches long, 
lanceolate, long-acuminate, concave. Spike dense or lax, 
six to twelve inches:long, few- or many-flowered; bracts 
leaf-hke, usually much exceeding the flowers. lowers very 
large, one and a half to one and three-quarters of an inch 
broad from the tip of the hood to that of the lip, and three 
inches from the tip of the hood to that of the spur, white 
blotched inside with pale purple. Upper sepal (hood) 
conical, with an oblique mouth, acute above, slightly curved, 
undulate, ending in a greenish straight slender spur as long 
as itself; lateral sepals decurved, oblong-lanceolate, with a 
short recurved spur behind the tip. Petals broadly obovate, 
nearly as wide as the hood is broad, the dilated acute end 
exserted and recurved. Lip two-thirds of an inch long, 
narrowly tongue-shaped, with a revolute tip, glabrous, 
smooth. Anther reflexed, one-third of an inch long ; cells 
contiguous, parallel, very narrow, tip obtuse. Stigma very 
oe des sala Ovary one and a half inches long.— 
Fig. 1, Top of ovary, lip, sti Sls a : : ee 
ae alt at seed. p, stigma, and an her ; 2, column seen in front; 3, pollen 
