186 THE ORCHID REVIEW. [JUNE, 1907. 
throw light on its origin (Gard. Chron. 1883, i. p. 466). He then compared. 
it with P. Aphrodite and P. Schilleriana, and called P. casta the “ lovely 
sister,” all of which suggested a doubt as to its origin. Still later it was. 
enumerated as a form of P. Aphrodite (Rolfe in Gard. Chron. 1886, ii.. 
p. 212). The observations of Mr. C. Roebelen on the distribution of the 
section Euphalenopsis in the Philippines threw a flood of light on the 
question, and these have already been summarised in our pages (vill. 
Pp- 133-136). From these it would appear that P. Sanderiana is a 
distinct local species, closely allied to P. Aphrodite, occurring in i 
abundance in the island of Mindanao and the small island of Balut, at the 
southernmost point of the Archipelago. | In the Davao district it is said to- 
grow in company with P. Aphrodite and a white-flowered species with 
silver-grey leaves, and that natural hybrids between them occur, a point. 
on which further information is desirable. P. Aphrodite and P. 
Schilleriana are said to grow in close proximity to each other in the island. 
of Luzon, and it is from such a locality that the natural hybrid P. X 
Jeucorrhoda and its varieties casta and Cynthia evidently came. Roebelen 
mentions three natural hybrids from P. Sanderiana, and it would be 
extremely interesting to see specimens of them, as well as the species with — 
silver-grey leaves and white flowers which still remains doubtful. 
P. Sanderiana itself appears to be rare in cultivation at the present time,. 
but its large rose-pink flowers are among the most beautiful in the genus. 
NOVELTIES. 
THE last issue of the Kew Bulletin contains another Decade of New Orchids: 
described by Mr. Rolfe, as follows :— 
BULBOPHYLLUM DICHROMUM, Rolfe.—A very distinct and striking 
novelty, introduced from Annam by Messrs. Sander & Sons, through their 
collector, W. Micholitz, and flowered at the Royal Botanic Gardens,. 
Glasnevin, in February last. It is allied to B. fuscopurpureum, Wight (see 
p- 188), but is altogether different in colour, while the lateral sepals are 
connate at the apex, and the petals do not bear a long bristle, as in that. 
The flowers are rather large, and are borne in a loose raceme of about 
twelve, the colour being bright yellow, with a dark purple lip, forming 4 
very striking contrast.—Kew Bull. 1907, p. 128. 
BULBOPHYLLUM TRIDENTATUM, Rolfe. —-A New Guinea species, intro-— 
duced by W. Micholitz, and flowered with Messrs. Sander & Sons; 
St. Albans, in May, 1g02. It is allied to B. mandibulare, Rchb. f., but bas 
narrow attenuate lateral sepals, short petals, and tridentate column teeth. 
The flowers are dull yellowish green and brownish purple.—i.c. p. 128. 
C@LOGYNE Mooreana, Hort. Sand.—A very handsome species, the: 
aati eae as eS 
