DENDROBIUM. 229 
on the upper surface, and coloured pale primrose-yellow, 
with a purplish blotch in the throat. Native of Tenas- 
serim; introduced in 1847. It blossoms in midsummer, 
requiring the same treatment as D. aureum. Except in 
the pseudo-bulbs, there is little difference between D. 
tortile, D. Pierardi, and D. primulinum. 
Botanical Magazine, t. 4477. 
Fig. 60. Dendrobium thyrsiflorum, showing Habit and detached Flower 
(Habit, much reduced; Flower, } nat. size). 
D. transparens.—A beautiful and easily-managed species, 
with erect, smooth, slender pseudo-bulbs, about rft. long, 
and narrow, deciduous leaves 3in. long. Flowers in pairs 
on the ripened leafless pseudo-bulbs, each r4in. across ; 
sepals lance-shaped, petals broader, both coloured pale 
lilac, tipped with rose; lip shaped as in D. nobile, white, 
with two purple blotches in front, and pale purple at the 
