302 MR. HENRY RIDLEY ON ORCHIDEH AND 
Erra (§ Denprourrion) ornata, Lindl., Gen. et Sp. Orch, 
p. 66?. Rhizoma gracile, ramosum; radices tenaces, teretes. 
Pseudo-bulbi 14-2 poll. longi, 3-3 poll. lati, {-3 poll. erassi, 
oblongi, compressi, 4-nodi, inter se 2-2} poll. remoti. Folia 
2-3, 6 poll. longa, 1 poll. lata, lanceolata acuta, apice ineequa- 
liter biloba, coriacea, lete virentia sepe rubromarginata. 
Scapus 1 ped. longus, lateralis, basi nudus, superne laxe race- 
mosus; bractese 14 poll. longw, ovate vel lanceolate, acute, 
glabre, aurantiaco-rubre. Flores 12-20; ovaria cum pedicellis 
1} poll. longa, brunea, pubescentia. Sepala basi brunea apice 
flavescenti-alba, extra pubescentia intus glabra flavescenti- 
alba, posticum 1 poll. longum, basi 3; poll. latum lineari- 
lanceolatum obtusum apice incrassatum, lateralia subsimilia ; 
mentum } poll. longum, late scrotiforme. Petala sepalis 
breviora, lanceolata acuminata, alba. Labellum basi latum 
album ; lobi laterales suberecti vix distincti albi in margine 
atrobrunei, medius anguste lanceolatus acutus, sinuatus, ker- 
mesinus; carine 2, in disco inter lobos laterales elevate. 
Columna curva, alba; pes longiusculus. Anthera conica, obtusa, 
alba. Stigma elongatum, oblongum. Dendrobium ornatum, 
Blume, Bijdr., p. 345 ?. 
Hab. Siam: Pungah, C. Curtis ! 
Also Borneo. 
This species is very distinct from the Philippine JL. 
armeniaca, Lindl., Bot. Reg. (1841) Misc., p. 38, t. 42 
(Cuming’s Collections, Philippines, n. 2048), but it seems to 
have been passed over for that species. Blume’s description is 
very incomplete (and I have not seen any specimens from Java), 
but as far as it goes it will suit this plant very well. 
The bracts are of a beautiful apricot orange, broader at the 
base than those of EF. armeniaca, Lindl., and glabrous, The 
sepals are dull purplish brown, and covered on the outer face 
with a fine white pubescence. The apices are yeliowish and 
more fleshy. The lip is very different. The two outer nerves 
of the dise are raised, and developed into thin plates, the 
median nerve is not elevated. The epichil is narrow and 
acuminate. In EH. armeniaca, Lindl., the lateral nerves are but 
little thickened and raised, but the median one is strongly 
developed, and on the broad ovate epichil bears an elliptic thick 
callus with a depressed centre. 
E. tomentosa, Hook. f., differs in having the mid-lobe “ clawed 
