description. As a rule, they are very difficult to keep under 
cultivation; the beautiful P. discolor, Bl. (Plate 6125) did 
not long survive being figured (in 1874). 
P. Gammieana bears the name of one who has contri- 
buted greatly to our knowledge of Sikkim plants, by a 
frequent correspondence with the Royal Gardens of Cal- 
cutta and Kew, carried on uninterruptediy for many years. 
The specimens here figured flowered in May, 1881, and 
perfected their leaves in July of the same year. 
Desor. Tuber subglobose, the size of a hazel or walnut, 
tuberculate. Leaf solitary, quite glabrous, four to six 
inches long and broad, rounded-cordate, acuminate, basal 
sinus very deep, margin obscurely undulate; nerves very 
numerous, radiating; young plaited between the nerves, 
with a row of very shallow broad pits on each fold; deep 
green above, pale beneath; petiole cylindric, streaked with 
red-brown, with one obtuse sheath at the base. Scape six 
to eight inches high, green, stout, with three or four 
sheaths, the lowest of which are streaked with red-brown. 
feaceme six- to eight-flowered, rachis green ; bracts linear, 
slender, membranous, much shorter than the flowers; 
pedicels very short; flowers drooping. Ovary turbinate, 
deeply six-grooved, brown. Sepals and petals subequal, 
three-quarters to one inch long, elliptic lanceolate, acu- 
minate, pale lilac streaked with pale pink. Lip pale green, 
as long as or rather longer than the sepals, narrow, lateral 
lobes small and folded round the sides of the column, 
terminal rounded veined with darker green, crumpled, 
hairy. Column smooth, semiterete, one-fourth shorter than 
the lip. Anther depressed-hemispheric.—J. D. H. 
Fig. 1, Side view of lip and column; 2, ditto : : 
4, anther-case; 5, pollen masses :—aii enlarged. seen from above; 3, column; 
