MR. H. N. RIDLEY ON THE GENUS BROMHEADIA. 335° 
Singapore, and are very characteristic of the taller trees, where 
they are exposed to full light. Orange-yellow flowers, like those 
of Bromheadia sylvestris, on the other hand, are rare; indeed, this 
colour occurs almost solely in Calanthe curculigoides,some Globbas, 
and a species of Alpinia (A. Rafflesiana), all of which grow in 
similar localities to the Bromheadia. The same peculiar orange 
colour appears in most of the native Gardenias, the flowers of 
which open white, and so speedily turn orange-yellow that it is 
rare to see a white flower on the tree. 
I would merely suggest that the differences between these 
species are rather vegetative than reproductive, and that as they 
seem to bear no relation to the fertilizer, which is the same 
apparently for all, they are due to change of habits; and from 
the stiffness of the leaves and stems and other peculiarities of B. 
palustris, I am inclined to suspect it is derived from an epiphytic 
ancestor, and its relations are to be sought in a somewhat different 
direction to that in which they are supposed to lie. 
BROMHEADIA. 
Herb: rigidæ, terrestres vel epiphyticæ, rhizomate ramoso, 
caules ebulbosi compressi ; folia disticha rigida sæpius lanceolata 
obtusa, apice bilobo, raro ensiformia recurva pungentia. Inflores- 
centia racemosa, racemis 1-, 2-, 3- vel multifloris flexuosis gradatim 
elongatis, raro congestis brevibus. Bractex persistentes cymbi- 
formes. Flores sæpius speciosi albi vel aurantiaci singulatim 
intervallis longis expansi. Sepala lanceolata acuta carinata. 
Petala paullo breviora atque latiora. Labellum trilobum ; lobi 
laterales longiusculi erecti, medius longior atque latior plus 
minus obovatus; calcare nullo. Columna curva elongata, dorso 
convexo, ventre excavato, a labello libera, clinandrium profundum 
margine antheram superante. Anthera convexa, margine antico 
retuso, Pollinia 2, cerea, semiovata, disco late ovato emarginato. 
Rostellum profunde et late emarginatum. Stigma profundum 
grande. Capsula sessilis erecta longa, cylindrica, subteres, peri- 
anthio marcescente coronata, segmentis inæqualibus, fertilibus 
quam steriles duplo latioribus. 
Species adhue note 4. Malayanæ, a Siamo et Burma ad 
Singapuram et insulas Malayanas et Philippinas. 
