278 MERRILL, 



CROTON Linn. 



Croton argyratus Blume Bidjdr. (1825) 602} Muell. Arg. in DC. Prodr. 

 15 2 (1862) 520. 



Mindanao, District of Zamboanga, Port Banga, For. Bur. 9>,21 Whitford d 

 Bmtohimon, 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. Fl. Brit. ind. 5 (1887) 393. 

 Palawan, For. Bur. 8881, >,lo9 Outran, Bur. Boi. 851 Foxworthy, March and 

 May. 1900. 



Malay Peninsula and Borneo; new to the Philippines. 



DIMORPHOCALYX Thwaites. 



Dimorphocalyx denticulatus sp. now 



Arbor parva, monoica, glabra; foliis oblongo-lanceolatis vel lanceolaiis, 

 utrinque angustatis, apice teimiter gradatim aeuminatis, usque ad 15 cm 

 longis, margine glanduloso-denticulatis ; inflorescentiis axillaribus, mas- 

 culinis cymosis, cymis brevibus, congest is. Horibua femineia Bolitariia vel 

 fasciculatis, 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 mm 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 urceolatc, 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-sulcate, 

 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 d 

 Hutchinson, December, 1907, in dipterocarp forests at an altitude of about 30 in. 

 A species well characterized by its glandular-denticulate leaves. 



