202 
ROBINSON. 
long, the peduncles and pedicels brown-tomentose, the calyx yellowish- 
tomentose, pedicels 2 mm long: calyx 3.5 mm long, divided for about 
half its length into 5 lobes, which are broadly ovate, rounded at the 
apex, hooded, and 2-nerved within ; petals 5, inserted on the margin 
cf the calyx-tube, cueullate, composed of a slender claw nearly 1 mm 
long and an obovate body of somewhat greater length and 0.6 mm wide, 
with advancing maturity bent down over the outside of the calyx between 
its lobes; stamens 5, opposite the petals and immediately within them, 
the filaments subulate, 1.4 mm long, the anthers 0.5 mm long, ovate, 
basifixed; disk filling the tube of the calyx; ovary 1.8 mm in diameter, 
immersed in the disk, tomentose, 2-celled, each cell containing one or 
two ovules; styles 2, 1.2 mm long, united for about two-thirds of their 
length, diverging at the apex; ovules plano-convex, 0.4 mm long. 
A woody vine, trailing over trees, with stems 3.7 cm in diameter ; bark 
of the ultimate branches purplish, striate, ferruginous-pubescent, armed 
at the nodes with one or rarely a pair of spines, which are brown, 
retrorse or recurved, 3.5 mm long: leaves alternate, borne on petioles 
3-4.5 mm long, the lamina brownish-green on both sides, deeper above, 
elliptic, inequilateral and somewhat cordate at the base, obtusely acu- 
minate and mueronate at the apex, denticulate throughout their whole 
length but not conspicuously, 7.8-10.3 cm long, 3-4.4 cm wide, con- 
spicuously 3 -nerved, nerves immersed in the upper surface, prominent and 
brown in color beneath, primary nerves between the midrib and the 
lateral nerves 30-40 on each side, between the lateral nerves and the 
margins about ten less, arched-anastomosing, forming a submarginal vein, 
all venation conspicuous, nerves beneath lightly pubescent. 
Type collected at Sax River, District of Zamboanga, Mindanao, by R. S. 
Williams, no. 2335, in flower, February 21, 1905. 
TILIACE2E. 
DIPLODISCUS Turcz. 
Diplodiscus pagiculatus Turcz. Bull. Soc. Imp. Nat. Moscou 31 1 (1858) 235. 
This species is endemic in the Philippines, and as now represented in the 
herbarium of the Bureau of Science is decidedly polymorphic. There seem to be 
three more or less distinct types, but with characters not sufficiently constant 
to justify specific segregation, although the two extremes are apparently very 
easily distinguished. 
The typical specimens, including both of the Cuming collections on which 
the species was originally based, have a very lax inflorescence, with comparatively 
long and slender pedicels, the petals seem always to number 5, and at the base 
are narrowed into a distinct claw. 
The other extreme type has both calyx-lobes and petals almost always 4, the 
inflorescence is more condensed, the pedicels are shorter and stouter, the petals 
are usually broader and at their base either do not form a definite claw, or the 
claw is very short. These are known only from Mindanao. 
Uniting these, however, is a third set, from Mindanao and Basilan, with the 
petals usually 4, but on an occasional sheet with about one-third of the flowers 
