214 
ROBINSON. 
mm from the margin, and a less conspicuous vein 2-3 mm from the 
margin, primary venation more conspicuous on the under surface of the 
leaf, the secondary and tertiary venation moderately reticulate, also more 
conspicuous on the under surface. 
Type collected at an elevation of 300 m at Sax River, District of Zamboanga, 
Mindanao, by R. S. Williams, no. 2317, in fruit, February 28, 1905. 
A very distinct species, probably constituting a new section of the genus. 
G EXT IAN A OErE. 
SWERTIA Linn. 
Swertia decurrens sp. nov. 
Herba erecta, glabra, simplex vel basi furcata; floribus cymoso-panicu- 
latis, tetrameris, viridibus, purpureo-maculatis ; seminibus numerosis, 
minutis, marginibus serratis; foliis oppositis, ellipticis vel ovalibus, 
eaulinis sessilibus, basi non connatis, clecurrentibus, inferioribus petiolatis. 
Flowers greenish with fine purple spots, cymose, the cymes forming 
an elongated, leafy, terminal panicle, few-flowered, attaining 5 cm in 
length, with narrowly lanceolate attenuate bracts at the base of the 0.3-1 
cm long pedicels: sepals 4, lanceolate, 6.5-7 mm long, 1. 5-1.8 mm wide, 
subacute at the. apex, free to about 0.5 mm from the base, 3-nerved; corolla 
as long as the calyx, 4-lobed to about 1 mm from the base, the lobes 
3 mm wide, oblong, canaliculate and acuminate at the . apex, net-veined, 
very slightly curved to the right, each lobe having within at its very base 
a delicate flap forming with it a shallow sac ; stamens 4, inserted near the 
base of the corolla, the filaments 3.5 mm long, the anthers 1 mm long; 
ovary ovoid, 6 mm long, 1-celled, with numerous ovules, becoming an 
early dehiscent capsule; style none, stigmas 2, flat, about 1 mm long; 
seeds very numerous, brown, flat, 0.6-0. 7 mm long, 0.3 mm wide, the 
margins comparatively deeply serrate, especially at the extremities, and 
bordered by a very narrow white wing. 
A perennial with nearly herbaceous, erect, hollow, 4-angled stems, 
simple or forked at the base, 25-40 cm high, and 2 mm in diameter 
including the wings formed by the decurrent bases of the opposite leaves, 
glabrous except sometimes for a few villous hairs upon the youngest 
leaves; the middle leaves the largest, sessile, 2. 5-3. 5 cm long, 1. 2-1.4 cm 
wide, elliptic, acute at both ends, the lowest reduced in size, petioled, 
elliptic or oval, frequently shortly acuminate at the apex, all leaves 
membranaceous, probably yellowish-green, with 3 conspicuous purplish 
veins and on each margin an additional inconspicuous vein ; smaller veins 
finely reticulate, but inconspicuous. 
Type collected on Mount Santo Tomas (Tonglon), Province of Benguet, Luzon, 
by R. S. Williams, no. 1529. in flower and fruit, November, 1904. 
A genus not hitherto reported from the Philippines. 
