258 Th, e Philippine Journal of Science 1916 
VINCENTIA Gaudichaud 
VINCENTIA ROBINSONII sp. nov. 
Dense caespitosa, glabra, usque ad 1 m alta ; f oliis equitantibus, 
coriaceis, glabris, 1 ad 1.5 cm latis, obscure acuminatis; in- 
florescentiis longe pedunculatis, paniculatis, paniculis circiter 
30 cm longis, spiculis omnibus sessilibus, fasciculatis, brunneis, 
circiter 5 mm longis, filamentis longe exsertis, usque ad 2.5 cm 
longis. 
A densely tufted, perennial, glabrous plant, reaching a height 
of at least 1 m, the roots stiff, fibrous, the leaves equitant, more 
or less crowded in the lower 10 cm, up to 90 cm in length, 
1 to 1.5 cm wide, straight, coriaceous, smooth, gradually nar- 
rowed upward to the obscurely acuminate apex, pale and 
shining when dry. Inflorescence apparently about as long as 
the leaves, the peduncle compressed, bearing a few, distant 
leaves smaller than the basal leaves, the uppermost one bract- 
like and about 5 cm long. Panicles brown, about 30 cm long, 
the lower two branches from the axil of the uppermost reduced 
leaves distant from the others, slender, up to 20 cm in length, 
somewhat flexuous, perhaps somewhat nodding, the branchlets 
subtended by a sheathing bract. Spikelets sessile on the ul- 
timate branchlets, usually three in a group, brown, about 
5 mm long. Empty glumes two, oblong-ovate to ovate, some- 
what keeled, about 3 mm long, rather abruptly and slenderly 
acuminate. Flowering glumes two, rarely three, 4 to 4.5 
mm long. Ovary narrowly ovoid, glabrous, narrowed upward, 
smooth, 3-angled; style, including the three, slender, 2 mm long 
arms, 5 mm in length. Stamens 3, the filaments very slender, 
2 to 2.5 cm long. Upper two or three glumes empty. 
Amboina, Salahoetoe, Rel. Robins. 1892, November 27, 1913, terrestrial 
on open hillsides, most abundant at an altitude of about 900 meters. 
In aspect this species much resembles Vincentia malesiaca Stapf (Cla- 
dium latifolium Merr.), but it is at once distinguished by its very long 
and slender filaments, these the most striking character of the present 
species. For a consideration of the genera Baumea and Vincentia in rela- 
tion to Cladium, see Stapf in Journ. Linn. Soc. Bot. 42 (1914) 178, 179. 
THORACOSTACHYUM Kurz 
THORACOSTACH YU M LUCBAN ENSE (Elm.) Kiikenth. in herb. comb, 
nov. 
Mapania lucbanensis Elm. Leafl. Philip. Bot'. 2 (1909) 573. 
Amboina, Hitoe messen, Rel. Robins. 1889, October 18, 1913, in forests, 
altitude about 250 meters. 
Previously known only from Luzon. The Amboina specimen has im- 
mature spikelets, but agrees in all essential details with our full series 
