MASDEVALLIA O’BRIENIANA Rolfe. 
Maspevatiia O’Brmentana Rolfe. Gard. Chron. 1890, pt. IL., p. 524. 
Leaf about 2 inches long and 4 inch broad, linear-lanceolate, very thick and stiff, apex acutely 
tridenticulate, dark green, often tinged with purple, narrowing below in a slender grooved petiole sheathed 
at the base. 
Peduncle about 4 inch long, terete, slender, ascending from within a sheath at the base of the petiole, 
with two or three flowers expanding in succession, pale green ; flowering bract 4 inch long, membranous, 
apiculate, dull brown. 
Ovary ¢ inch long, triangular, with three rounded lobes and three crenate wings, bright green. 
Sepals: dorsal sepal united to the lateral sepals at the base only, about 3 inch long, oblong-ovate, 
3-nerved, dull yellowish, semi-transparent, with transverse crimson bars and spots, terminatiug in a 
slender pointed tail } inch long, orange-yellow, with minute crimson spots ; lateral sepals cohering for 
about 4 inch, forming a shallow cup with a keel-like excrescence round the front, free portion } inch 
long, ovate, 3-nerved, terminating in slender flattened tails } inch long, yellow, with minute crimson 
spots ; the central nerves of all the sepals are carinate at the back. 
Petals § inch long and nearly as broad, angled on one side, lobed on the other, apex rounded, bright 
yellow, blotched and spotted with crimson. 
Lip rather longer than the petals, linear at the base and united to the foot of the column by a flexible 
hinge, anterior portion very broad, with two horn-like projections and two prominent angular lobes, apex 
reflexed, bright yellow, with numerous crimson spots. 
Column a little longer than the petals, broadly winged, apex recurved, denticulate, greenish-yellow 
spotted with crimson, the foot rich crimson, with two curved longitudinal bricht yellow keels. 
‘P y ? co) co) vA 
(HIS species was named and described by Mr. Rolfe in 1890, from plants which 
flowered in the collection of Mr. R. J. Measures. It is closely allied to WZ. simula 
Rehb. f., and I am unable to obtain any information whatever as to its habitat. 
Explanation of Plate : 
Fig. 1, petals, lip, and column, in natural position ;—la, section of ovary ;—2, petal, inner side ;— 
3, lip ;—8a, apex of lip ;—4, column ;—4a, apex of column ;—4b, part of foot of column 395, apex and 
section of leaf; all enlarged. 
