t 
342 ROBINSON. 
RHAMNACEAE. 
RHAMNUS L. 
Rhamnus philippinensis sp. nov. 
Rhamnus formosana C. B. Kob. in Philip. Journ. Sci. 3 (1908) Bot. 201, non 
Matsum. in Bot Mag. Tokyo 12 (1898) 22. 
r 
Frutex, E. formosaiiae siniilis, sed differt calyce fructifcro truncate, 
floribus majoribus, foliis crassioribus, latioribus, erenatis, et venis mino- 
ribus. 
Flowers polygamous, forming axillary or terminal few-flowered leafy 
cymes, borne on pedicels l.S to 3.5 mm long; bracteoles linear, acute, 1.5 
mm long: calyx campanulate, 2.2 to 2.8 mm long, divided for over half 
its length into 5 broadly lanceolate to broadly ovate obtusely acuminate 
lobes, slightly pilose on the back, the inner surface of the lobes keeled ; 
petals 5, inserted on the rim of the calyx-tube, elliptic, oblong, or oval, 
about O.G mm long, rounded at the apex, narrowed and with short claws 
at the base; stamens 5 or none, when present inserted with the petals 
and opposite them, filaments 0.2 mm long, anthers 0.3 to 0.4 mm long; 
disk lining the tube of the calyx; ovary sessile, subglobose, 0.8 mm 
long, 1 mm in diameter, 3-celled; styles 2- or 3-cleft, nearly 1 mm 
long: fruiting calyx truncate at the apex, slightly cupular or flattened, 
when viewed from below or above very obtusely 5-angled, less than 4 mm 
in diameter; fruit purple, globose or subglobose, up to 8 mm in diameter, 
when mature (and dried), strongly 3-grooved with 3 shallower interven- 
ing grooves; nutlets usually 2, more rarely 1 or 3, 6.5 to 7.5 mm long, 
4.5 mm wide, 1-celled, 1-seeded; seeds about 6.5 mm long, testa brownish. 
A shrub 2.5 to 3 m high, the bark of the ultimate branches light- 
brown to dark-browm, striate, with numerous somewhat conspicuous 
lenticels, shortly pilose on the branches, branehlets, petioles, veins of the 
under surface of the leaves, stipules, and branches of the inflorescence : 
leaves subopposite or well alternate, the petioles 6 to 20 mm long, the 
lamina rigidly chartaceous, oval or suborbicular, rarely oblong, often of 
two fairly definite types on the same plant, the one usually 9 to 10 cm 
long, 5 to G.5 cm wide, the other 3.5 to 5.5 cm long, 2.5 to 4 cm wide, 
but some of either type larger or smaller than the figures given, truncate 
or subcordate at the base, crenate on the margins, somewhat abruptly 
acuminate and mucronate at the apex; pinnately veined, with 4 to 6 
pairs on each side, well arched; stipules linear-lanceolate, acute, caducous, 
2.5 mm long. 
Luzon, with no further locality, Loher 331: Subprovince of Bontoc, Gaddac, 
Vanoverhergh 7S2; Banco, Bur. Sc-i. 700o Ramos: Subprovince of Bengnet, Bagnio. 
Elmer 6379, Merrill 770/, Williams 1121 (type), For. Bur. -'/S73 Curran: Prov- 
ince of Nueva Vizcaya or Pangasinan, Tniogcn-Nozo trail, For. Bur. JJS//7 Ucrrxtt : 
Province of Rizal, Montalban, Loher 5822: Province of Tayabaa. Mount Banajao. 
Whifford s. n. 
