246 MR. HENRY RIDLEY ON ORCHIDEH AND 
Denprosium (§ AporuM) Mannut, Ridl.,sp.nova. Caules5-6 poll. 
longi, erecti, congesti, complanati. Folia } poll. longa, 4 poll. 
lata, lanceolata acuta, letevirentia, iis D. cochinchinensis ferme 
similia. Flores in racemis axillaribus brevissimis (in caulibus 
nudis, foliis delapsis, sitis) seepissime bini, iis D. Leonis similes 
sed minores tenuiores, primulini, inodori; pedicelli {¢ poll. 
longi, graciles, recti vel nutantes; ovarium breve. Sepalum 
posticum ovato-oblongum, lateralia multo majora ovata triangu- 
laria obtusa falcatula; mentum cum sepalo 3 poll. longum, 
crassum, curvum, obtusum. Petala sepalis multo minora, 
linearia, lorata. Labellwm oblongum, cuneatum ; lobi laterales 
deflexi abrupte truncati, medius 2-lobus lobis approximatis 
rotundatis crispulis quam lobi laterales paullo Jongioribus ; 
discus primulinus a macula ochrea ornatus. Coluwmna subrecta, 
angusta, basi ocreo-maculata, in ventre plana. Anthera 
plana, in clinandrio immersa, margine recto truncato; loculi 
disjuncti; pollinia 4, obovata, flava; stelidia C. Stigma ovato- 
scutiforme; discus viscidus, citrinus. 
Hab. Assam: G. Mann !. 
Malacca: Mt. Ophir district, Derry !. 
(Flowered in Hort. Bot. Singapore, Nov., 1890, and Jan., 1891.) 
This is a plant allied to D. Leonis, Reichb. f., but remarkable 
in not having the tuft of bracts as usual in an Aporwm, but a 
short distinct raceme. The flowers appear only on the leafless 
stems, or if, as may happen, the leaves persist, it is merely on 
the older ones. In most Apora one flower appears from each 
raceme or capitulum at a time, so that the plant may be 
almost always in flower, yet only a few flowers appear. In 
D. Mannii the whole of the plant is in flower at once, and then 
after flowering remains quiescent for a time. 
D. (§ Aporum) arropurrurruM, Mig., Fl. Ind. Bat., iii. p. 644. 
Hab. Singapore : Kranji, Tanglin ! 
Johore ! 
Malacca : Sungei Rambei ! 
Pahang: Pekan, Kwala Pahang! 
Selangor: Kwala Lumpur, Kelsall ! 
Penang: Government Hill ! 
Siam: Singgora ! Punga! Curtis. 
Borneo: Sarawak, Bishop Hose ! 
Java: Buitenzorg, T’reub ! 
New Guinea: fide Blume in Rumphia ! 
