214 Rocixsox. 
L ■ 
mm from tlie margin, ami a less conspicuous vein 2-3 mm from the 
margin, primaiv venation more conspicuous on the under surface of the 
leaf, the secondary and tertiary venation moderately reticulate, also more 
conspicuouti on the under surface. 
Type collected at an elevation of 300 m at Sax River, District of Zanil»oanga, 
Mindanao, hy K, S. Williams, «o. 2S17, in fruit, February 28, 1905. 
A very distinct species, probal)ly constituting a new seeti(>n of the genus. 
GEXTIAXACE.i:. 
SWERTIA TJnn. 
Swertia decurrens sp. nuv. 
llerLa erecta, glal)ra, simplex vel basi furcata; floribus cymoso-panicu- 
latis, tetrameris, viridil)us, purpureo-maculatis; seminibus numerosis, 
minutis, margin! bus serratis; foliis oppositis, ellipticis vel ovalibus, 
caulinis sossilibus, basi non connatis, decurrentihus, inferioribus petiolatis. 
Flowers greenish with fine pui'ple spots, cymose, tlie C3'mes 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, G.o-7 nun long, 1.5-1.8 mm wide, 
subacute at the apex, free to about 0.5 mm from tlie base, 3-nerved; corolla 
as long as the calyx, 4-lobed to al)out 1 mm from the base, the lobes 
3 mm wide, oblong, canaliculate and acmninate 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 fdaments 3.5 mm long, the anthers 1 mm long; 
ovary ovoid, n\m long, 1 -celled, with numerous ovules, becoming an 
early deliiscent capsule; style none, stigmas 2, flat, about 1 mm long; 
seeds very numerous, brown, flat, 0.(>-0.7 nmi long, 0.3 mm wide, the 
margins comparatively deeply serrate, especially at the extremities, and 
bordered by a very narrow \\ liite wing. 
A perennial with nearly herbaceous, erect, bollow. 4-angled stems, 
simple or forked at the base, 25-40 cm high, and 2 nun in diameter 
including the M'ings formed by the decurrcnt bases of the opposite leaves, 
glabrous except sometimes for a few villous^ hairs upon the yoimgest 
leaveri; the middle leaves the largest, sessile, 2.5-3.5 cm long, 1.2-1.4 cm 
wide, elliptic, acute at l>otli ends, the lowest reduced in size, pctioled, 
. elliptic or oval, frequently shortly acuminate at the apex, all leaves 
membranaceous, probably yellowish-green, with 3 conspicuous purplish 
veins and on each nuirgin an additional inconspicuous vein; smaller veins 
finely reticulate, but inconspicuous. 
Type collected on Monnt Santo Tonias (Tonglon), Province of Bengnet, Luzon, 
by R. S. Williams, no. 152!), in flower ami fruit, November, 1004. 
A genus not liitlierto reported from the Philippines. 
