ARNOLD ARBORETUM, HARVARD UNIVERSITY 
, Malaya 
Plants o t J 
ARNOLD ARBORETUM, HARVARD UNIVERSITY 
Plants of Malaya 
P. F. Stevens et al. 48. 
Johore, Re.nggam F.R., radio station ridge, 240 m. 
16.xi.1975 
Ridge forest. 
Tree ca. 18 m. tall, d.b.h. 30 cm. no buttresses, 
etc; outer bark grayish and orangey mottled, the 
inner surface dirty dark orange brown; under 
bark reddish; inner bark pale red; latex yellow, 
in discrete drops, slightly opaque; bark-sapwood 
interface smooth. Leaves V-shaped, dark dull 
green above, the margins and midrib paler, the 
midrib flat, below paler, the venation clear, the 
indumentum reddish-brown, grayish when older, the 
midrib rounded; flowers white but indumentum makes 
them yellowish; old fruit picked off the ground, 
3.25 X 2.2 cm., the walls ca. 2 mm. thick. 
Spirit material. 
Guttiferae - Calophyllum sp. (perhaps hybrid?). 
P. F. Stevens et al. 51. 
Johore, R^nggam F.R., radio station ridge, 240 m. 
16.xi.1975 
Ridge forest. 
Tree ca. 15 m. tall, d.b.h. 14 cm., no buttresses, 
etc.; outer bark smooth, almost orange, hoop- 
marked, with lines of lenticels but otherwise 
smooth, the inner surface orange brown; under bark 
reddish; inner bark reddish, laminated, darkening 
rapidly on exposure; latex white, not very sticky, 
in discrete drops; leaves mid shiny green above, 
the venation obscure, the midrib pale, slightly 
raised, below paler green, the venation clear, the 
midrib raised, prominent, rounded; fallen leaves 
orange brown, very conspicuous. 
Guttiferae - Calophyllum incrassatum Hend. 5c Wyatt 
Smith 
ARNOLD ARBORETUM, HARVARD UNIVERSITY 
Plants of Malaya 
P. F. Stevens et al. 49. 
Johore, Ranggam F.R., radio station ridge, 240 m. 
16.xi.1975 
Ridge forest. 
Tree 18 m. tall, d.b.h. 35 cm. no buttresses, etc 
outer bark dull brown, with rather long fissures, 
hoop-marked, the inner surface blackish; under 
bark red; inner bark dark red; laminated; latex 
clear yellow, free-flowing, not very sticky, 
bark-sapwood interface striate; branches drooping 
Leaves dark green above, the venation very close, 
almost invisible, the midrib pale, flat, below 
paler, venation clearer, the midrib prominent, 
rounded; terminal buds vetjprominent, with dark 
brown indumentum; axillary buds also prominent. 
Young plants not erect; terminal bud functional, 
white when young, soon becoming blackish-brown, 
the young leaves white, drooping. 
Guttiferae - Calophyllum rigidum Miq. 
ARNOLD ARBORETUM, HARVARD UNIVERSITY 
Plants of Malaya 
P. F. Stevens et al. 52. 
Johore, Renggam F.R., radio station ridge, 240 m. 
16.xi.1975 
Ridge forest. 
. Tree ca. 20 m. tall, d.b.h. to 35 cm., not very 
well grown, no buttresses, etc.; outer bark 
yellowish, with rather distant boat-shaped 
fissures, the inner surface orange-dirty brown; 
under bark reddish; inner bark meat red, lami- 
. nated, darkening on exposure; latex white, sticky 
drying yellowish on exposure; leaves flat, mid 
shiny green above, the midrib whitish, veins 
somewhat raised, below paler, latex canals and 
veins more or less visible, the midrib rounded, 
brownish; immature fruit pale green. 
Guttiferae - Calophyllum biflorum Hend. & Wyatt- 
Smith 
ARNOLD ARBORETUM, HARVARD UNIVERSITY 
Plants of Malaya 
ARNOLD ARBORETUM, HARVARD UNIVERSITY 
Plants of Malaya 
P. F. Stevens et al. 56. 
Johore, Lenggor F.R., compartment 105, 17.xi.1975, 
ca. 35 m. 
Undulating lowland rainforest. 
Treelet 2 m. tall, with spreading branches; leaves 
dull green above, paler below, with white hairs; 
flowers white; fruit green. 
Rubiaceae 
P. F. Stevens et al. 53. 
johore, Rtnggam F.R., radio station ridge, 240 a. 
16.xi.1975. 
Ridge forest. 
Outer bark yellow brown-gray mottled, with a few 
long cracks, the inner surface orange; under bark 
orange green; under bark pale reddish; latex 
sparse, yellow, opaque; leaves dark more or less 
shiny green above, the venation obscure, the mid- 
S LLed, pale, below paler, Che venation viai- 
ble, the midrib rounded; tip of the lamina 
recurved; flowers whitish, scented, ants on the 
buds. Spirit material. 
Guttiferae ~ Calophyllum sp- aff. C-. gracillimum 
Hend. & Wyatt-Smith 
