Avoust, 1911. THE ORCHID REVIEW. 239 
seem- doubly persistent. I have often thought that they must come into the 
houses from outside, and to be forewarned is to be forearmed. Prevention 
is better than cure, and steps should be taken to get rid of such pests, 
as ifthey get a footing at this time of year, they are particularly difficult to 
deal with when more fire heat is a necessity. Towards the end of the 
month more attention will have to be given to temperatures, and although 
no harm will occur by slight fluctuations, it is not wise to allow them if they 
can possibly be avoided. Success in Orchid culture lies entirely in attention 
to detail, and the more we attend to the small matters the greater will be 
our reward in the larger ones. 
——-0-< 
DENDROBIUM AURANTIACUM, 
SoME time ago a yellow-flowered Dendrobium, whose identity was un- 
certain, was introduced from the island of Formosa, by the Yokohama 
Nursery Co., Japan. It has now flowered with Sir Frank Crisp, Bart., Friar 
Park, Henley, and with Messrs. Stuart Low & Co., the latter firm having 
acquired a stock from the Yokohama Nursery Co. It proves to be 
Dendrobium flaviflorum, Hayata (Journ. Coil. Sci. Tokyo, xxx. p. 312), 
which has recently been described in a paper on the Flora of Formosa, and 
of which the author, after stating that the precise habitat had not been 
given, remarks ‘‘ I remember having seen the plant on Mt. Manapan when 
I was botanising on the same mountain.’ It, however, proves identical 
with D. aurantiacum, Rchb. f. (Gard. Chron., 1887, ii. p. 98), whose history 
was thus given. ‘ This is a very old friend of mine. I have known it for 
more than thirty years, and it came in my way at very rare intervals. My 
first acquaintance with it was made in the garden of Herr Kammerrath 
Frege, at Abteranndorf, near Leipsic, in 1854. Then it was gathered in 
May, 1870, in Assam, by my friend Gustay Mann. Both Kammerrath Frege 
and Gustav Mann were very discontented that I did not publish it, but 
I had no certainty as to the distinctness of the species, and in 1854 I 
could not believe in the possibility that a decided East Indian Orchid 
should have escaped the observation of our lamented Dr. Lindley. 
In April last it appeared at Chelsea, at Mr. W. Bull’s, and the 
plant being now in the trade judgment cannot be postponed.” He then 
described its characters. Some six months later materials were sent by 
Messrs. James Veitch & Sons, Chelsea, from an Assamese importation, and 
I, believing it to be new, and completely overlooking Reichenbach’s 
description, re-described it as D. chryseum (Gard. Chron., 1888, 1. p. 233). 
‘The two, however, were soon connected together, and afterwards the. 
species was figured (Hook. f. in Ann. R. Bot. Gard. Calc., v. 1-24, t.. 21). 
Later on it was collected near Tachienlu, in the district of Szechuen and 
the Tibetan Frontier, by Pratt (Rolfe in Journ. Linn. Soc., xxxvi. p. 9), and 
