MASDEVALLIA O’BRIENIANA Rolfe. 
Masprvatita OBiaestaxa Rolfe. Gard. Chron, S90, pt. IL. p. 524. 
leat about 2 inches tong aud | inch broad. Tinear-lanceolate, very thick and stiff, apex acutely 
rridenticnlate. dark creen, often tnged with purple. narrowing below in a slender grooved petiole sheathed 
at the hase. 
Pedunele about ! 
ine lous. terete. slender, ascending from within a sheath at the base of the petiole, 
with two or three tlowers expanding in snecession. pale green ; flowering bract $ inch Jong, membranous, 
apieniate. dall brown, 
Ovary Linch long, tuianeular, with three rounded lobes and three crenate wings, bright green. 
Sepals: dorsal sepal united to the lateral sepals at the base only, about 2 inch Jong, oblong-ovate. 
enerved, dull yellowish. semi-transparent. with transverse crimson bars and spots, terminatiug in a 
slender pointed tail { imch long, orange-vellow, with minute crimson spots ; lateral sepals cohering for 
about 2 inch, forming a shallow cup with a keel-like exerescence round the front, free portion 4 inch 
long. ovate. S-nerved, terminating in slender flattened tails 4 inch Jong, yellow, with minute crimson 
spots: the central nerves of all the sepals are carinate at the back. 
Petals 2 
s 
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, Hvear 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 eurved longitudinal bright vellow keels. 
MPYWIS 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 J/. simala 
Rehb. fo and Pam unable to obtain any information whatever as to its habitat. 
Explanation of Plate : 
Pie. 1. petals, lip. and column, in natural position ;—la, section of ovary ;—2, petal, inner side ;— 
S. lip —Sacapex of lip :—4. column ;—da. apex of column ;—4b, part of foot of column ;—5, apex and 
section of feat: all enlarwed, 
