68 
AN EXPEDITION TO MOUNT BATU LAWI. 
fere aequilongis lanceolato-subulatis, ala apicali cucullata apice 
recurva oblonga obtusa, pede cum ovario angulum obtusum 
faciente c. 0.04 cm. longo. Rostellum recuryum, brevi-trian- 
geulum, convexum. Stigma ovale, longitudinale. Ovarium 
brevissimum, cum pedicello ¢. 0.075 em, longum. 
Borneo: Sarawak, on Mt. Batu Lawi, Ulu Limbang, (J. 
C. Moulton, n. 16, fl. in May 1911). Amongst the few species 
of the section Platyclinis with an elongate rootstock (for 
which Pfitzer and Kranzlin proposed the superfluous and in- 
accurately defined subgenus Monochlamys) this seems to be 
the smallest one. The lip is only slightly three-lobed, with a 
relatively very short terminal lobe and 2 stout longitudinal 
keels. 
Dendrobium lawiense, J. J. S., n. sp. 
Caules tenues, ramosi, radicantes, c. 25-55 em. longi, c. 4 
em. supra basin vel plus tenuiter fusiformi-incrassati, parte 
incrassata c. 4-10 em. longa 2-3 nodi ad nodos contracta in 
sicco acute costata, superne foliati, internodis c. 1.2-3 em. 
longis. Folia linearia, apicem versus leviter angustata, in- 
aequaliter biloba, dense in sicco prominenter nervosa, rigidula 
c. 3.8-6.5 cm. longa, in sicco 0.2-0.325 cm. lata; vaginae tubu- 
losae, costulatae, “crebre et minute puncticulatae, internodia 
paulum superantes. Inflorescentiae ad nodos partis caulium 
superioris, fasciculares, squamis siccis ad ¢. 0.5 em. longis cinc- 
tae, paucos flores gignentes. Flores mediocres, fugaces. Sepa- 
lum dorsale lanceolatum, obtusum (?), 7 neryium, c. 1.5 em. 
longum, 0.46 cm. latum. Sepala !ateralia mentum breve 
rectum conicum lateraliter compressum obtusum cum ovario 
angulum rectum faciens c. 0.5 cm. longum formantia, oblique 
sublanceolata, breviter subacuta, basi oblique dilatata, c. 7 
nervia, c. 1.7 cm., usque ad apicem menti 2.4 cm. longa, 0.625 
em. lata... Labellum pedi eynostemii peel elio subrectum, 
elongatum, angustum, concavum, 3 lobum, 4 parte inferiore 
intus pilosum, costis 3 simplicibus glabris valde approximatis 
medium labelli haud attingentibus, expansum c. 2.15 am. lon- 
gum, usque ad apicem loborum lateralium ec. 1 cm. longum, ad 
lobos laterales 0.825 cm. latum; lobi laterales (pars libera) 
parvi, dentiformes, triangul1, eee Ue dentati; lobus inter- 
medius anguste oblongus, in c. ¥ supra basin contractus, apice 
breviter triangulus, iihoulahue , crenulatus, basi 0.53 em., con- 
strictione 0.45 em. latus. Gynostemium breve, bifidum, e. 0.16 
cm, longum, auriculis magnis sursum curvis faleatis laciniatis, 
filamento brevissimo. Anthera majuscula, cucullata, conica, 
lateraliter compressa, sulco longitudinali, apice producta 
breviter 3 dentata, c. 0.175 cm. longa. Stigma obtriangulum. 
Pes gynostemii cum ovario angulum rectum faciens, rectus, 
intus costa longitudinali infra apicem glandulam subglobosam 
gerente instructus, c 0.5 cm. longus. Ovarium breve, ob- 
Jour. Straits Branch 
