282 MR. HENRY RIDLEY ON ORCHIDEX AND 
CIRRHOPETALUM GAMOSEPALUM var. ANGUSTUM, Jtidl., var. nova. 
Folia angusta lanceolata basi acuminata. Sepala lateralia 
angustiora longiora. Stelidia erecta nec prosilientia acutiora. 
Columne pes laticr, apex dilatatus. 
Hab. Borneo: Sandakan, Mr. Pryer. 
This is a rather distinct looking form with narrower leaves 
and longer acuter sepals. The flowers have more rose colour 
and less buff in them, and the lip is entirely brown, without 
the yellow tip which typical C. gamosepalum possesses. 
C. concinnum, Hook. f., Fl. Brit. Ind., vi. p. 190, Ic. Pl., 
t. 2060 B. 
Hab. Singapore: Chan Chu Kang! Kranji! &e. 
Johore: Tana Runto! 
Also Rhio! 
A common and variable species, growing usually low down 
on trees. <A very distinct looking variety is :— 
—Var. purrvrEuM, Ridl., var. nova. 
Pseudo-bulbi et folia forme typicw. Flores paullo majores, 
atro-kermesini. Sepalum posticum minus, 53; poll. longum, 
atrokermesinum ciliis concoloribus, lateralia 3 poll. longum, 
vs poll. lata, decurva, in vivo canaliculata. Labellum magis 
abrupte curvum, flavescens, in margine fuscum. Colwmna 
flavescens, roseo-maculata ; pes longus, gradatim curvus, longior 
et angustior. . 
Hab. Penang: Government Hill ! 
This has the whole flower of a deep crimson colour, and there 
are a few minor differences in the proportion of the parts. It 
has much the resemblance of C. Cumingii, Lindl., Bot. Mag., 
t. 4996, from the Philippines. 
C. acuminatum, Ridl., sp. nova. Rhizoma elongatum, tenue. 
Pseudo-bulbi 4 poll. longi, fusiformi-conici, atrovirides, pluri 
sulcati, inter se 1 poll. distantes. Folia 3 poll. longa, ferme 
1 poll. lata, oblanceolata acuminata, apice obtusa ineequaliter 
biloba. Scapus 6 poll. longus, gracilis, tenuis, purpureus, usque 
ad 5-florus. Flores majusculi, imperfecte umbellati; bractes 
cum $ parte pedicelli vix sequilonge, lanceolate acute, purpure®. 
Sepalum posticum ovatum, ab aristd longa ciliata aristatum, 
aurantiacum rubro-striatum, lateralia angusta elongata 
acuminata libera convoluta, basi rufescentia apice divaricata 
flava. Petala ovata, longe aristata, ciliata, aurantiaca rubro- 
