136 ANNALS OF ROYAL BOTANIC GARDEN, CALCUTTA. 
nucleus 1 in. to 1°25 long, triangular, flat; the wing thinly membranous, pale yellow, 
oblong, its apex blunt, oblique, venation vertical, the areolae wide. King in Journ. 
As. Soc. Bengal, for 1889, Pt. 2, p. 133. Jsopteris penangiana, Wall, Cat. 7261. 
Penang. Malacca. Perak; common. 
The pubescence on the under surfaces of the leaves is so minute that, without a good lens, it 
is not seen. 
Ралте 159. Trigoniastrum hypoleucum, Mig. 1, flowering branch; 2, fruiting branch: of natural size; 3, flower 
showing the five petals and two of the sepals: enlarged; 4, sepal; 5, lateral petal; 6, the large saccate odd petal ; 
7, pistil and stamens: much enlarg:d. 
XANTHOPHYLLUM, Roxb. Nat. Ord. Polygalew. 
Trees or shrubs. Leaves coriaceous or sub-coriaceous, usually drying yellowish- 
green. Sepals 5, nearly equal. Petals 5 or 4, the inferior keeled, not crested. Stamens 
8, distinct, variously attached to the base of the petals, or hypogynous. Ovary stipitate, 
l-celled, often surrounded by a hypogynous disc.; style more or less filiform, ovules 
various in insertion and number. Fruit l-celled, 1-seeded, indehiscent, Seeds exalbumi- 
nous, estrophiolate. 
PLATE 160. 
ÄANTHOPHYLLUM AnDAMANICUM, King in Journ. As. Soc. Bengal, for 1890, pt., 2, р. 135. 
A tree 20 to 30 feet high, glabrous except the inflorescence, branches dark brown. 
Leaves thinly coriaceous, drying a pale greenish passing into brown, elliptic to elliptic- 
oblong, rarely sub obovate,  sub-acute, the base cuneate; upper surface smooth, 
shining, the lower dull and pale, both minutely reticulate; main nerves 7 to 8 pairs, 
slightly prominent; length 3 to 4 in., breadth 1°25 to 175 in.; petiole “3 to “4 in. 
Powers ۰3 in. long, their pedicels about as long.  Panicles extra-axillary or terminal, 
15 to 3 in. long, lax, few-branched, slender. Sepals ovate to rotund, pubescent, edges 
ciliolate. Petals broadly ovate, glabrous, keel pubescent. Filaments flat and pubescent 
at the base, otherwise cylindric and glabrous, Ovary elongate-ovoid, glabrous, 4-ovuled, 
tapering into the rather flat, pubescent style; disc corrugated, glabrous. fruit 
globose, *5 in. in diam., smooth; pericarp thin, crustaceous. 
Andaman Islands; Helfer, Kurz, King’s Collector. Burma, Kurz. 
This is not anlike X. Grifithii in its leaves; but it differs in its glabrous ovary and fruit. 
_ Prate 160. Xanthophyllum Andamanicum, King. 1, flowering branch; 2, ripe fruit: of natural size; 3, flower 
dissected; 4, stamens; 5, pistil: much enlarged. 
PLATE 161. 
XANTHOPHYLLUM Wrayı, King in Journ. As. Soc. Bengal, for 1890, pi. 2, p. 138. 
A shrub 3 to 8 feet high, the young branches minutely tomentose. Leaves sub- 
coriaceous, drying a pale yellowish-green, elliptic to oblong, more or less acuminate, 
