THE ORCHID REVIEW. 217 
we must not omit to mention the fine Galeandra Batemanii which always 
remains in flower for several weeks, and Grammatophyllum Rumphianum, 
whose long racemes also remain fresh for a long period. 
ODONTO. 
DENDROBIUM x RADIANS. 
A veERY striking Dendrobium was exhibited by Messrs. Hugh Low & Co., 
at the recent Temple Show, which came in a batch of D. Lown from 
Borneo, and was not noticed as being different until the flowers expanded. 
They then proved to be white, with a deep cinnabar-orange blotch at the 
base of the front lobe of the lip, and several similar lines extending down 
the disc, also a large blotch of the same colour at the base of the column. 
The stalk of the front lobe of the lip is also much broader, and the hairs 
are nearly obsolete, though not quite so, as may be seen when examined 
under the lens. On looking the matter up, I believe it agrees with Dendro- 
bium radians, Rchb. f. (Xen. Orch. i. p. 130, t. 146, fig. 1 and 2), described 
and figured from a Bornean plant which flowered with the same firm in 
May, 1863, and seems to have been immediately afterwards lost sight of. 
There is also a D. erythropogon, Rchb. f. (in Gard. Chron., 1885, xxiv, p. 
198), which, from the description, I believe is a form of the same. It also 
appeared among plants of D. Lowii in the same establishment, and agrees 
with that species in habit, though differing in the colour and details of the 
flower. Reichenbach, when describing it, suggested that it might be a 
natural hybrid, without further suggestions as to the parentage. I find 
there is a Bornean species, D. sculptum, Rchb. f. (Bot. Zett., 1863, p. 128 ; 
Xen. Orch., ii, p. 131, t. 146, fig. 4-7), which flowered with Messrs. Hugh 
Low & Co., in 1863, and presumably came home in the same importation 
as D. radians. It belongs to the same section as D. Lowii, and has white 
flowers with a nearly round orange blotch on the centre of the lip. This 
and D. Lowii I believe to have been the parents of D. xX radians, for the 
flowers of the latter are as nearly intermediate as they can well be, even 
the markings on the disc seem to be a compromise between the orange 
blotch of the one and the redish keels of the other. D. erythropogon, 
which I rank as a variety of D. radians, had pale whitish ochre flowers, and 
the two outer of the seven reddish-orange lines on the disc bore some short 
hairs, as in the recent examples. It may be a long time before this pretty 
little plant is obtained artificially—I do not even know if D. sculptum is 
still in cultivation—but if any one has an opportunity of making the cross 
I hope they will not fail to utilise it. Its re-appearance is certainly 
interesting. " . 
. A. ROLFE, 
