CERATOSTYLIS. —94T 
the column, about as long as the sepals, broadly ovate, very concave, fleshy, slightly 
erenulate near the base, otherwise entire; the apex blunt but with a small upturned 
apiculus. Column short, terete; rostellum stout, elongate. Anther dorsal, persistent, 
membranous, two-celled; the cells quite free and distinct, each dehiscing transversely by 
the broad blunt apex. Pollinia four, in two pairs, waxy; both pairs sessile on the rather 
large oblong fleshy gland, caudicle none. 
An anomalous genus with the pollen of Vandeac, and the habit and general appearance of 
Aphyllorchis. The waxy nature of the pollinia and their attachment to a gland make it, however, 
impossible to include it in the latter genus. We find no genus in which it can be placed, and we have 
therefore founded one for its reception, naming it in honour of the Honourable Н. Н. Risley, c.rE., 
of the Bengal Civil Service, one of the Secretaries to the Government of Bengal, a distinguished 
ethnologist and author of an important work on the Tribes and Castes of Bengal. | 
RISLEYA ATROPURPUREA, King and Pantling. 
Height of the whole plant 2:5 to 5 in. Sheaths at the base of the leafless scape 
wide, tubular, blunt, “5 to 1 in. long. Raceme *5 to 195 in. long; the flowers very 
numerous, inverted, ‘06 in. across; the floral bract as long as the stalked twisted ovary. 
Petals rather narrower than the sepals, rostellum projecting. 
Sikkim, near Jongri; at an elevation of 13,000 feet; in flower during June 
and July; Pantling No. 451. 
The flowers are of а deep blackish-purple colour. 
Рглте 828.—Risleya atropurpurea, King and Pantling. Two plants, of natural гіз, Fig. 1 a 
flower, 2 floral bract, stalked ovary, column with anther £n situ, and lip, іп profile, 3 lip, 4 apex of 
ovary, column with anther én situ, side view, б summit of the oyary, showing the two empty anther 
cells and the rostellum (r), 6 pollinia; ай much enlarged, 
61. Ceratostylis, Blume. 
Epiphytic herbs with crowded stems without pseudo-bulbs. Stems tufted, simple and 
rush-like or branched, sheathed, with usually only one leaf. Leaf narrow, coriaceous, 
fleshy, or sub-terete. Flowers minute, solitary or in small clusters and sometimes enveloped 
in a cymbiform sheath with scarious bracts. Sepals sub-equal, the lateral pair broad at 
the base and forming a mentum with the foot of the column the lateral sepals and the 
base of the lip. Petals narrower than the sepals. Тір spathulate, clawed, expanded, the 
apex thickened and fleshy. Column short, deeply two-lobed, each lobe bearing a stigmatic 
area near the apex of its inner surface. Anther dorsal, lying in the sinus between the 
lobes of the column; foot of the column long, narrow. Pollinia eight, attached to a 
common membrane and that in turn to a gland. Species probably about 10; Malayan, 
Indian and Australasian. 
CERATOSTYLIS TERES, Reichb. fil in Bonplandia, II, 89. 
Stems crowded, rising from a dense fibrous rhizome, terete, rush-like, sheathed at 
the base, erect or curved, bearing a single terete leaf at the apex jointed to and in the 
same line with the stem. ead of flowers from the leaf-joint, *25 to ‘35 in. in diam.; 
