112 THE ORCHID REVIEW. [APRIL, 1915. 
proportions, with plenty of drainage. Repotted plants, especially divided 
pieces, frequently shrivel a little, but they should ‘not be deluged with 
water with the idea of keeping them plump, it being preferable to lightly 
spray them overhead occasionally till root action commences, and when 
well rooted into the compost the plants delight in abundance of water each 
time the soil becomes fairly dry. Until the roots have made considerable 
progress, and the pseudobulbs have regained their plumpness the plants 
should be well shaded from strong sunshine. : 
OponTocLossuMs.—The early part of April is a suitable time to afford 
more root room to such plants as are not flowering, but none should be 
disturbed unless repotting is absolutely necessary. Those having sufficient 
root room should not be repotted before the autumn. Plants that have 
their new growths coming over the edge of the pots may be turned out of 
their receptacles, all useless back bulbs removed, and as much of the back 
part of the soil taken away as possible. The material for repotting should 
consist of a mixture of osmunda fibre, Ax fibre, and sphagnum moss, in 
equal parts, with plenty of small crocks added. The pots should be well 
drained, for although Odontoglossums need plenty of water whilst growing, 
a stagnant soil is injurious to them. After repotting, afford water with 
great care, for any excess of moisture at this stage will cause the old roots 
to perish and the pseudobulbs to shrivel. Plants which have recently 
flowered should be afforded but little water at the root; if kept too wet 
there will be weak premature growths. 
Betas Finale 
OncIDIUM TENUE.—An interesting Oncidium which was exhibited at 
the R.H.S. meeting held on March 2nd, by J. Gurney Fowler, Esq.) 
Brackenhurst, Pembury (gr. Mr. Davis), proves to be the rare O. tenue, 4 
species which flowered in the garden of the Horticultural Society of London, 
in September, 1847, when it was figured and described by Lindley (Jo 
Hort. Soc., iii. pp. 76, 77, with fig.). It is said to have .been received 
through Mr. Hartweg from Guatemala. It belongs to Lindley’s grouP 
Pentapetala Plurituberculata, and bears a general resemblance to O. suave, 
Lindl., trom which it is readily distinguished by its acutely triangular 
column wings. The sepals and petals are brown, with a little yellow at the 
apex and on the undulate margin, while the lip is yellow, with a brown 
area in front of the crest, which latter is characterised by its very small 
teeth. It may be added that the plant subsequently described and figured 
as O. tenue var. grandiflorum (Lindl., /.c., vii. p. 271, with fig.) was aftet- 
wards made a distinct species under the name of O. delumbe (Lindl. Fol. 
Orch., Oncid., p. 48). It also is a native of Guatemala, and is rarely seen 
in cultivation. Several other species of this group are still very imperfectly 
known.—R. A. ROLFE. 
