240 THE ORCHID REVIEW. [AUGUST, Ig10. 
the disc of the lip yellow. It is figured in Ames Orch., ii. t. 17, as Dendro- 
bium acuminatum. 
19. S. Lyontt (Dendrobium Lyonii, Ames) is allied to the preceding, 
but has larger rosy-carmine flowers with a darker lip. It was found in the 
mountains of Bataan, Luzon, at 2,000 to 3,000 feet elevation. It has been 
confused with the preceding, and I believe includes all the plants which 
have been recently exhibited under the name of D. acuminatum, also the 
figures in Gard. Chron., 1907, ii. p. 210, fig. 88; 1909, ii. p. 150, fig. 64; Gard- 
Mag., 1909, pp. 659, 660, with fig. ; Journ. Hort., 1902, ii. p. 291, with fig. ; 
Orchas, iivp.°73, t. 16. 3 
20. S.STELLA-SILV#, Loher & Kranzl. (Fedde Rep. Nov. Sp., vii. p. 40), 
was collected in the Philippines by Loher, and recently flowered at 
Erlangen. It is most like S. acuminatum, and has white flowers, with 
some purple stripes on the lip and a yellow crest. 
21. S. MURICATUM (Dendrobium muricatum, Finet) is a remarkable 
New Caledonian species which recently flowered at the Royal Botanic 
Garden, Glasnevin, whose history has’ already been given (UO. R., xvil. p. 
347). R. A. Roire. 
CATASETUM THYLACIOCHILUM. 
A FINE plant of this rare Catasetum, bearing two pendulous racemes, was 
exhibited at the recent Holland House Show from the collection of J. Gurney 
Fowler, Esq., Glebelands, S. Woodford (gr. Mr. Davis), under the name of 
C. Russellianum. The two species are remarkably alike in habit and colour, 
but there is a striking structural difference between them, to be pointed out 
presently. C. thylaciochilum was described in 1856, by Lemaire (J/l. Hort., 
iii. Misc. p. 90, with fig.), from a plant which flowered in the establishment of 
M. Verschaffalt, at Ghent, and which had been received from Mexico in the 
previous year. It was said to be allied to C. calceolatum, Lem. (J//. Hort., 
i. Misc. p. 45, with fig.), a Guatemalan species which has since proved 
identical with C. Russellianum, Hook. Bot. Mag.,t. 3777. In August, 1889, 
a Mexican Catasetum was sent to Kew for determination by Messrs. John 
Cowan & Co., Liverpool, which had been shipped from Vera Cruz, and 
which proved to be C. thylaciochilum, Four years later the late Mr. W. H. 
Gower also sent it, and in August, 1895, it flowered with Sir Trevor 
Lawrence. Although resembling the Guatemalan C. Russellianum so 
closely in habit and colour, it is markedly different in the structure of the 
lip, which in C. thylaciochilum forms a globose basal sac, prolonged far 
behind the base of the lateral sepals, while in C. Russellianum the 
sac extends forward, forming an elongated pouch, which ends abruptly 
beyond the middle of the lip. Both the species belong to the section 
Ecirrhosz (Rolfe in Fourn. Linn. Soc., xxvii., p. 224) characterised by the 
absence of the antennz-like appendages of the column. R. A. RoOLFE. 
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