80 
CONTRIBUTIONS TO A FLORA OF BORNEO. 
Unona jcimbosifolia, n. sp. 
A shrub. Leaves subeoriaceous, glabrous, pale beneath, 
or reddish elliptic to lanceolate elliptic acuminate, base 
rounded, cordate, subpeltate, 17 cm. long, 5-7 cm. wide; 
nerves above depressed, ten pairs, regularly inarching 
5 mm. within the margin ; petiole 2-4 mm. long, thick, 
hairy. Flowers in pairs on the lower part of the stem on 
pubescent pedicels 1 cm. long. Sepals semiorbicular, thick, 
pubescent at first, edges ciliate with red hairs. Petals sub¬ 
equal, ovate lanceolate oblong, thick, glabrous except some 
reddish hairs on the edge, 1 cm. long, 6 mm. wide. Stamens 
numerous, appendages broad, flat, angled. Pistils hairy. 
Ripe carpels globose or cylindric hairy, shortly beaked, 
about 14, 10 mm. long, 7 mm. wide, 1-4 seeded. 
British North Borneo : Batu Putih (Creagh) ; Kudat 
(Fraser). 
This belongs to the set of Unonas represented by U. 
Wrayi, U. desmantlia , &c., which are in every point closely 
allied to Polyalthia except in the presence of more than 
two ovules in the ovary. It seems to me to be doubtful 
whether they should be retained at all in the genus Unona . 
This is a peculiar plant in its foliage, which is curiously 
like that of an Eugenia of the Jambosa section, nearly 
sessile, and with a curious inarching venation. The flowers 
seem to have been purple. 
Polyalthia Beccarii , King, l. c. 65. 
Sarawak (Beccari, 668, 710, 891, 2277, &c.); Kuching 
(Haviland, 412); Mt. Bongo, near Tegara (Haviland, 2070); 
Matang, at 1000 ft. altitude (Hallett), and at 1600 ffc. 
(Haviland, 406); Mt. Trekau (Hose), at 2000 ft.; Miri 
River (Hose, 558). 
Labuan (Motley, 165). 
S.E. Borneo: Banjermasin (Motley, 959). 
Distrib. Malay Peninsula. A common little tree. 
Polyalthia sumatrana , King, L c. 58. 
Sarawak (Beccari, 1438, 630, 1586, 1160) ; Kuching 
(Haviland, 2210, 1680). 
S.E. Borneo (Korthals). 
Polyalthia Teysmanni , Boerl., Ic. Bogor. 107. 
Sarawak : Kuching (Haviland, 413). 
S.E. Borneo : Sakumbang (Korthals). 
