JAaNnuaRY, 1922.] THE ORCHID REV HOW: WI 
the tube of the lip. The following plants are considered varieties of it :— 
L. anceps Ashworthiana (Orch. Rev., ti., p. 63), L. anceps Simondsii (Orch. 
Rev., x., p. 50), L. anceps waddonensis (Orch. Rev., vi., p. 94), L. anceps 
Hollidayana (Orch. Rev., x., p. 52), and L. anceps Hollidayana White Queen. 
DIACRIUM BICORNUTUM. 
T the Orchid Committee meeting of the Royal Horticultural Society, 
A held November 2gth, Mr. W. J. Kaye showed a photograph of a 
remarkable specimem of Diacrium bicornutum, growing in Trinidad, and 
carrying no less than forty-six flower spikes. 
This species was originally described and figured in 1834 under the 
name Epidendrum bicornutum (Hook. Bot. Mag., t. 3332), from a plant 
which flowered in the collection of Earl Fitzwilliam, at Wentworth. It 
had been introduced by Messrs. Shepherd of Liverpool, from Trinidad, 
where it grows on rocks so close to the coast that it must often be sprayed 
with salt water. Subsequently Sir Robert Schomburgk found it growing on 
the trunks of trees by the River Bernice in Demerara. 
DIACRIUM BICORNUTUM. 
Lindley made Diacrium a section of Epidendrum, remarking that the 
lip of E. bicornutum is not parallel with the column, and has two deep pits 
on the underside, corresponding with the same number of fleshly elevated 
triangular plates on the upper side (Lindl. Fol. Orch. Ep., p- 26). Bentham 
referred the plant to the genus Diacrium, stating that the peculiar 
bi-cornute labellum which is neither adnate to, nor parallel with the 
column, gives the flower a very different aspect from that of the true species 
of Epidendrum, and cannot be included in them without doing violence to 
the generic characters. (Journ. Linn. Soc., xviii. p. 312). 
Diacrium bicornutum delights in an abundance of heat and moisture, and 
under these conditions in its native home grows with considerable vigour ; 
-under artificial conditions success is not easily obtained. The pseudobulbs 
are hollow, and frequently inhabited by ants. 
