21,6 Merrill: The Bornean Flora 523 
of the midrib, rather prominent on the lower surface, curved, 
anastomosing, distant, the reticulations lax, distinct; petioles 5 
to 8 mm long. Fruits yellowish brown when ripe, globose, 
glabrous, brown when dry, solitary, on the branchlets and older 
branches, about 2.5 cm in diameter, 2-celled, each cell with a 
single seed, the pericarp about 5 mm thick, rather brittle; pedi- 
cels up to 8 mm long. 
British North-Borneo, Sandakan, Suanlamba watershed, Cas- 
tillo 637, August 26, 1918. In level country at low altitudes. 
This species probably is as closely allied to Cyclostemon pala- 
wanensis as to any other but is entirely glabrous and has larger, 
slenderly acuminate, fewer-nerved leaves, and apparently larger 
fruits although the mature fruits of the Palawan species are as 
yet unknown. 
CYCLOSTEMON MEGACARPUS Merr. in Philip. Journ. Sci. 7 (1912) Bot. 
387. 
British North Borneo, Suanlamba River, Agama 576, August 
20, 1918. 
Philippines; this is the first extra-Philippine record for the 
species. : 
CROTON Linnaeus 
CROTON CUMINGI! Muell.-Arg. in Linnaea 34 (1865) 101, DC. Prodr. 
157 (1886) 566. | 
British North Borneo, Tawao, D. D. Wood 628, May 22; 1918. 
New to Borneo; upper Malay Peninsula, Riu Kiu Islands, 
Formosa, and the Philippines. 
OMPHALEA Linnaeus 
OMPHALEA SARGENTI! Merr. in Philip. Journ. Sci. 16 (1920) 574. 
British North Borneo, Suanlamba River, Castillo 634, August, 
1918. Malay, lasit; Sebuga, Ramos 1874, December,. 1920. . 
The specimen cited above is an excellent match for the type, 
a Philippine specimen, which was from an island between Pala- 
wan and Borneo. The second species of the genus from Borneo. 
ZIZYPHUS Tournefort 
ZIZYPHUS LENTICELLATA sp. nov. 
Frutex scandens ramulis et subtus foliis ad nervis leviter 
adpresse-pubescentibus; ramis ramulisque lenticellatis; spinis 
recurvatis, solitariis, 5 mm longis; foliis firmiter chartaceis, 
oblongo-ellipticis, subolivaceis, nitidis, 6 ad 11 cm longis, utrin- 
que angustatis, apice perspicue acuminatis, basi leviter inaequila- 
teralibus, minute cordatis, margine minute serrulatis; nervis 3, 
