would be worth undertaking. One species has been pre- 
viously figured in this work, D. anceps, Sw. of Bengal, 
t. 3608, which has axillary flowers with minute bracts. 
In D. Leonis the bracts in some specimens have broken up 
into a brush of brown fibres, out of which the flower 
arises. : 
Plants of D. Leonis were received at the Royal Gardens 
from Mr. Curtis, F.L.S., Assistant Superintendent of the 
Garden and Forest Department of Penang, who procured 
them from Perak in the adjoining Peninsula. One of 
these flowered in a tropical House in April of this year. 
Descr.—Stems tufted with fibrous roots, branching from 
the base; branches four to six inches long, one and a half 
inch broad across the distichous leaves which clothe the 
branches from base to apex. Leaves about an inch long, 
ovate-oblong, obtuse, equitant and distichously imbricating, 
their flattened scarious sheaths embracing the broad flat- 
tened stem, dark green, hard and fleshy, quite smooth, 
nerveless ; sometimes, when the internodes are lengthened, 
the leaf breaks away from the scarious sheath, and the 
latter presents a truncate face of a pale grey colour con- 
trasting with the dark green of the adjacent leaves. 
Flowers solitary, and very shortly pedicelled at the ends of 
the branches, about three-fourths of an inch long by nearly 
as broad, of a dirty golden-yellow, streaked with dull 
purple at the base of the lateral sepals and lip. Lateral 
sepals much larger than the rest of the flower, very 
broadly ovate, obtuse, connate with the foot of the column 
into a rounded mentum ; dorsal sepal very small, orbicular- 
ovate. Petals about as large as the dorsal sepal, ovate- 
oblong, obtuse. Lip as long as the lateral sepals, linear- 
oblong, undivided, disk with a thickened median band 
terminating in a rounded broad thickened setulose tip. 
Column very short. Anther hemispheric, crown 2-lobed. 
—J.D. H. 
Fig. 1, Flower with the lip removed; 2, lip; 3, anther; 4, pollinia :-—Adl 
enlarged, 
