JULY, 1903.] THE ORCHID REVIEW. 199° 
difficult to grow, but we find the Intermediate House generally recom- 
mended in preference to the Warm House, and Mr. Burberry once 
remarked :— “‘The most healthy plant of Dendrobium Falconeri that I 
have seen, and one that actually increases in size year by year, is grown in 
the temperature of a greenhouse the whole year round, on the stem of a 
living tree-fern, and naturally shaded by its large fronds.”—Orch. Reo. ii., 
p- 87. Abundance of water, from the syringe or sprayer, is required during 
growth, and afterwards a long cool rest.—Ep.} 
se 
PAPHIOPEDILUM x PETRI. 
SOME considerable time ago (Orch. Rev., iv., p. 366) it was pointed out that 
the above plant is probably a natural hybrid between Paphiopedilum 
Dayanum and P. virens, but the details were not given, because it was: 
hoped that materials of P. X woodlandense, an artificial hybrid between 
the same two species, would be available for comparison. Such, however, 
has not been the case, and as the question has cropped up again it may be 
interesting to review the known facts. 
The first record occurs in 1880, when Reichenbach described 
Cypripedium Petri (Gard. Chron., 1880, i., p. 680). The author described 
it as very near C. Dayanum, but differing in numerous details, notably in 
having smaller flowers, with relatively shorter sepals and petals. It was 
discovered by Messrs. Peter Veitch and F. W. Burbidge, and was dedicated 
to the former. 
In the following year C. Burbidgei, Rchb. f., was described (Gard. 
Chron., 1881, ii., p. 38). It was said to be.much in the way of C. javanicum 
and C. virens, but very easily distinguishable by the staminode, while the 
lip resembled C. Petri and C. Dayanum. Reichenbach remarked :—‘‘ My 
first acquaintance with this was undoubtedly made by the assistance of Mr. 
‘S. Low. » . . Lately 1 obtained... from Mesere. Vesten. It 
grew together with Cypripedium Petri, and it was more gay in its colours.” 
It was dedicated to Mr. Burbidge. 
Mr. Day fortunately made coloured drawings of both these plants. Of C. 
Petri (Day Coll., xxxii., t. 53), he remarked :—‘“‘ Introduced from Borneo 
by Messrs. James Veitch & Sons it is closely allied to my old C. 
virens,: and indeed I can hardly see any difference.” Of C. 
Burbidgei (Day Coll., xxx., t. 13) he remarked :—‘‘ Imported by Messrs. 
Hugh Low & Co. from Java recently, having been collected by their 
traveller, Mr. Smith. It is very like C. javanicum, so much so indeed that 
I thought it was that species, but having observed and read the description 
of C. Burbidgei, I sent [to Prof. Reichenbach] this flewer, and 
have his answer saying it is his Burbidgei.” 
