278 
MERRILL. 
CROTON L inn. 
Croton argyratus Blume Bidjdr. (1825) 602; Muell. Arg. in DC. Prodr. 
15= (1862) 526. 
Mindanao, District of Zamboanga, Port Banga, For. Bur. DJ/2 1 Whitford & 
Hutchinson, February, 1908, in dipterocarp forests at 300 m altitude. 
Burma to the Malay Peninsula, Java, Sumatra, and Borneo; new to the Philip- 
pines. 
Croton ardisioides Hook. f. FI. Brit. Ind. 5 (1887) 393. 
Palawan, For. Bur. 3S31, 4159 Curran, Bur. Sci. Sol Foxivorthy, March and 
May, 1906. 
Malay Peninsula and Borneo; new to the Philippines. 
Dl MORPHOCALYX Thwaites. 
Di morphocalyx denticulatus sp. nov. 
Arbor parva, monoica, glabra ; foliis oblongo-lanceolatis vel lanceolatis, 
utrinque angustatis, apice tenuiter gradatim acuminatis, usque ad 15 cm 
longis, margine glanduloso-denticulatis ; inflorescentiis axillaribus, mas- 
culinis cymosis, cyiiiis brevibus, conges tis, floribus femineis solitariis vel 
fascieulatis, petalis sepalis brevioribus. 
A small glabrous monoecious tree. Branches grayish-brown, terete, 
slender. Leaves alternate, firmly chartaceous or subcoriaceous, oblong- 
lanceolate to lanceolate, narrowed at both ends, 7 to 15 cm long, 2 to 4 
cm wide, the apex gradually and slenderly acuminate, the base acute, the 
margins rather distantly and irregularly glandular-denticulate, grayish- 
brown when dry, shining; nerves 10 or 11 on each side of the midrib, 
spreading, anastomosing and forming a distinct, submarginal nerve, the 
secondary nerves rather distinct, the reticulations lax, obscure; petioles 
2 to 3 mm long. Staminate inflorescence axillary, of short, dense, 1 to 
2 cm long cymes, each subtended by two ovate-lanceolate, acuminate, 3.5 
mm long bracts. Male flowers short-pedicelled. Calyx-lobes 5, elliptic, 
obtuse, imbricate, about 1.5 m m long. Petals elliptic, obtuse, glabrous, 
3 mm long. Stamens about 15, the outer 5 larger than the others, the 
filaments short, the inner ones more or less united. Pistillate flowers on 
the same plant, axillary, solitary or fascicled, stipitate, and subtended by 
several, imbricate, ovate-lanceolate, acute or acuminate bracteoles. Calyx 
somewhat urceolate, the lobes elliptic, 6 mm long, 3 mm wide, obtuse, in 
bud much exceeding the petals. Petals, in bud, imbricate, glabrous, 
elliptic, 3 mm long, obtuse. Ovary ellipsoid or ovoid, obscurely 3-suleate, 
glabrous, 3-celled, each cell 1-ovuled; styles 3, more or less united below, 
cleft, in bud recurved. 
Mindanao, District of Zamboanga, Port Banga, For. Bur. 9033 Whitford it 
Hutchinson, December, 1907, in dipterocarp forests at an altitude of about 30 m. 
A species well characterized by its glandular-denticulate leaves. 
