Pterospermum.] xxiv. sterculiace^e. 283 
Stipules small, linear. Flowers white, 6 to 7 in. long, solitary or 
in 3- or 4-flowered axillary cymes; pedicels '2 in. long. Sepals 
coriaceous, linear blunt. Petals membranous, linear glabrous, 
little longer. Staminal tube 2 in. long; fertile anthers 10. 
Staminodes 5, pubescent. Ovary fusiform, tomentose; style less 
than 2 in. long. Stigma fusiform. Capsule woody oblong, acutely 
5-angled, 4 to 5 in. long, 1*5 to 2 in. through. Seeds flattened, 
1*5 to 2 in. long. Hab. Forests, not very common. Singapore, 
Pulau Ubin. Malacca; Batu Tiga; Panchur. Negri Sembilan, 
Bukit Kandang. Selangor, Kwala Lumpur. Perak, Goping 
(Kunstler). Distrib. Java, Philippines, Cochin-China. Native 
name : Bayur jantan. 
(2) P. Blumeanum Korth. Ned. Kruidk. Arch. ii. 311; King, 
l.c. 84. 
A tall but not stout tree 40 to 50 ft. high. Branches covered 
with red hairs, eventually blackish. Leaves thinly coriaceous, 
inequilateral, oblong-ovate or lanceolate-oblong acuminate, base 
broad unequally cordate, above light green, shining beneath tawny- 
tomentose, with stellate hairs inter-mixed; nerves 7 to 9 pairs, 
3 to 5-5 in. long, 1-35 to 2 in. wide; petioles-*15 in. long. Stipules 
subulate-lanceolate. Flowers 2 in. long, solitary or in 2- or 3- 
flowered cymes, axillary or pseudoterminal; pedicels '5 in. long. 
Sepals coriaceous linear acute, stellate-pubescent outside, pubescent 
inside. Petals obliquely oblong-lanceolate or sub-spathulate, 
shorter, white. Staminal-tube -5 in. long; anthers 10; staminodes 
5. Ovary ovoid, villous; style shorter than tube. Capsule 
oblong woody, 5-angled, narrowed at base, glabrous when ripe, 
3 to 4 in. long, 1*5 in. through. Seeds 1*5 in. long. Hab. Com¬ 
mon in forests. Singapore, Bukit Timah, etc. Johor, Sungei Biku 
(Down). Selangor, Sungei Buluh (Burkill). Perak, Larut Hills. 
Penang, Balik Pulau. Lankawi at Kwah. Distrib. Burma, 
Assam, Java, Sumatra, Borneo. Native name : Bayur. 
(3) P. Jackianum Wall. Cat. 1164; Masters, l.c. i. 367. 
A tree. Branches covered with white tomentum, with rufous 
stellate hairs. Leaves sub-coriaceous, oblong or elliptic-oblong, 
slightly inequilateral, edge entire or sinuate towards the tip, base 
sub-acute or truncate, minutely cordate, not auricled, glabrous 
above except midrib and nerves, below pale buff minutely tomentose 
with rusty stellate hairs; nerves 10 to 12 pairs, 4 to 5*5 in. long, 1*5 
to 2*2 in. wide; petioles -25 in. long. Flower 2 in. long, solitary 
axillary; pedicels -i in. long, tomentose. Sepals linear-lanceolate, 
tomentose outside. Petals shorter, white, oblanceolate, scaly 
puberulous outside. Staminal-tube -25 in. long; anthers 12; 
staminodes 5. Ovary fusiform; style longer than the stamens. 
Capsule shortly stalked, ovoid terete, acute, i'5 in. long, 1 in. 
through, covered with flat, scaly hairs. Hab. Hill forests. Penang, 
Bukit Erskine (Curtis, Phillips). Distrib. Tenasserim, S. Siam. 
