EASTERN COAST OF THE MALAY PENINSULA. 379 
i-polliearis, albus, gracilis, lobi angusti lineares acuti, 4-pollicares. Staminodia 
latiora, lorata, obtusa, alba. Labellum oblongum obovatum, apice emarginato, lobis 
rotundatis albis, macula flava mediana, striis violaceis in lobis. Stamen filamento 
latiusculo. Anthera oblonga, connectivo lato, тесигуо obtuso, atro-violaceo. Loculi 
angusti lineares. Pollen pallidum flavum. Capsula non visa. 
Abundant in the Tahan woods, but seldom flowering. This is a pretty small species, 
and the only Turmeric known to me from the Peninsula which has the flower-spike 
distinct from the leaves. The only other wild species I have seen from the Peninsula is 
C. petiolata, Rosc., common in open country, generally, however, near old cultivation ; 
C. grandiflora, Wall., is also described * from the Malay Peninsula," and I have received 
C. parviflora, Wall., from Bangtaphan іп Siam, sent by Dr. Keith. АП these belong to 
the section Hitcheniopsis. 
Costus SPECIOSUS, Linn. 
Common. Таһап woods. 
There are two forms of this plant which have a very distinct appearance. Тһе common 
form has stout stems and big heads of flowers, with a very large lip, white, with a yellow 
central spot. This is met with in open swampy spots, on borders of rivers, &c. The 
petals are often tinted with rose, which tint, with the narrower leaves, apparently alone 
constitutes the distinction of C. nipalensis, Rosc. (С. speciosa angustifolia, Hook.). Тһе 
other form has slenderer, more straggling, often branched stems, smaller heads of flowers, 
and smaller flowers, without any yellow on the lip. 1% has the habit somewhat of the 
next species, and frequents damp rocky woods. I have gathered both forms in the 
Tahan Valley woods. 
C. eroBosus, Blume. 
Tahan woods, banks of the river. 
This is quite distinct from C. speciosus. 'The racemes are not terminal, but almost 
buried in the ground, on short stems; the calyces are quite prickly, the flowers yellow 
and red. It is much scarcer than the preceding, though I have had it from Penang and 
other parts of the Peninsula, and from Singapore. 
GASTROCHILUS BILOBA, n. sp.  Perennis, acaulis. Folia oblonga obtusa, petiolata; 
lamina 6-8-pollicaris, 3-3} pollices lata, supra glabra atro-viridis, fasciis palli- 
dioribus, subtus purpurea, nervis elevatis, costa crassa pubescente ; petiolus crassus, 
2-8-pollicaris, canaliculatus, pubescens. Racemi breves laterales folio approximati, 
pollicares, sessiles, bracteis pluribus latis ad basin. Bracteze atro-rubre. Flores 
plures, singulatim expansi, mox caduci, bracteolis binis tenuibus lanceolatis, striatis, 
rufis. Calyx semipollicaris, tubulosus, quam bracteæ brevior, superne dilatatus, ore 
intus profunde emarginato, pallidus, transversim rubro-venosus, laciniis obscuris 
5 Corolle tubus 14-pollicaris, gracilis, albus, lobis reflexis lanceolatis acutis, 
з pollicem longis, 2 pollicem latis, albis. Staminodia magis oblonga, $ pollicem 
longa, obtusa, alba, Labellum oblongum, patulum, bilobum, lobis imbricatis rotun- 
datis obtusis, ferme pollicaribus, $ pollicem latis, medio canaliculato, nervis late- 
ralibus paullo elevatis, album, basi roseo-tincta. Anthera lata oblonga, alba, loculis 
SECOND SERIES.—BOTANY, VOL. III. 9G 
