petals are of very pale rosy-lilac, while the labellum is pale lemon-yellow with a 
lilac flush and a few purplish streaks in the throat. It is ciliated at the margin 
while the disk is downy. Sepals and petals are more or less spirally twisted. 
Flowers in Summer. 
Variety Dartoisianum, Differs from the type in having the sepals and petals tinged 
with yellow. 
Variety rosewm—has sepals and petals rose-pink and shaded with yellow. Al. 
B2. C2. D2. El. (ea) Fl. 
DENDROBIUM TRANSPARENS. Native of Assam. 
A dainty species with slender, erect, terete stems up to about 16 inches in length, 
with deciduous linear-lanceolate leaves. The flowers grow in pairs along the mat- 
ured stems. The sepals are narrow and pointed, and like the broader sepals are 
white or pale pinkish lilac, the tips being more intensely coloured. The lip is the 
same as the petals, with a reddish blotch from which a few stripes run to the 
edges. Flowers in Summer. 
Var. album—a rare species which is spotless white all over. A2. B3. C3. D3. 
El. (ea) F4. 
DENDROBIUM TREACHERIANUM. Native of Borneo. 
A small growing species of great beauty, with short angular, oblong, pseudobulb- 
like stems, growing from a creeping rhizome, and topped with a pair of small 
oblong, lanceolate leaves up to about 3 inches in length. Flowers are produced 
from top of the bulbs, the racemes carrying 3-5 flowers. Sepals and petals deep 
reddish purple, the sepals being the broader, the labellum being the same colour 
at the base but paling towards the apex. Flowers in early Spring. Strongly 
aromatic. The species is now usually included in the allied genus Sarcopodium. 
AS. Bl. Cl. D2. El. (ed) Fl. | 
DENDROBIUM TREUBII. Native of Amboina. 
A handsome species with terete stems slender at the base and swollen and flattened 
in the upper parts, and growing to a length of about 18 inches. The deciduous 
leaves are about 2 inches long and are oblong, undulated and soft in texture. The 
racemes grow from the upper nodes of the stems and carry 5 to 6 flowers 2} to 
3 inches in diameter. Sepals a glossy, creamy white (the dorsal being broader 
than the laterals), the petals white, and the large labellum purple with ele- 
vated more intense lines radiating from the disk. The lateral lobes are white, 
more or less marked with purple in the inside. The flowers appear in Autumn 
and last a long time. Al. B1. C1. D1. El. (eb) F1. 
DENDROBIUM UNDULATUM. Native of Queensland. (Illustrated). 
A fine hardy species with long, stout, fusiform and sometimes furrowed stems 
growing to a length of 6 or 8 feet. The leaves are persistent and grow in 
parallel rows on both sides of the stems. They are oblong, obtuse, notched at the 
tip, up to § inches in length and about 2 inches across. Racemes grow from the 
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