278 MKIIRILL. 



CROTON Linn. 



Croton argyratus Blume Bidjdr. (1825) 002; Muell. Aig. in DC. Prodr. 

 15= (1802) .-)2»;. 



Mindanao, District of Ziunhoanj^a. Port Banga, For. Bur. 9Jf21 Whitford d 

 Hutchinson. February, 1908, in dipterocarp forests at 300 m altitude. 



Burma to the ^lalay Peninsula, Java, Sumatra, and Borneo; new to the Philip- 

 pines. 



Croton ardisioides Hook. f. PI. Brit. Ind. 5 (1887) 393. 



Palawan, For. Bur. 3S31, -'fl59 Carran, Bur. Sci. S57 Foxworthy, March and 

 May, 1906. 



^lalay Peninsula and Borneo; new to the Philippines. 



DIMORPHOCALYX Thwaites. 

 Dimorphocalyx denticulatus sp. nov. 



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

 iitrinque angiistatis, apice tenuiter gradatim acuminatis, usque ad 15 cm 

 longis, margine glanduloso-dcnticulatis; inflorescenliis axillaribiis, mas- 

 culinis eymosis, cyniis brevihus, congestis, iioribus i'oiuineis solitariis vel 

 fasciculatis, petalis sepalis brevioribus. 



A small glabrous monoecious tree. Branches grayish-l)rowii, terete, 

 slender. Leaves alternate, firmly chartaceous or subcoriaceous, oblong- 

 lanceolate to lanceolate, narrowed at both ends, 7 to 15 cm long, 3 to -i 

 cm wide, tlie 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 axillar}^ 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, tlie 

 filaments short, the inner ones more or less united. Pistillate flowers on 

 the same plant, axillary, solitary or fa.scicled, stipitate, and subtended by 

 several, imbricate, ovate-lanceolate, acute or acuminate bracteoles. Calyx 

 somewhat urceolate, the lobes elliptic, G 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 Zamhoanga, Port Baiiga, For. Bur. 9033 Whitford d- 

 Hutchinson, December, 1907, in di))tc'rocarp forests at an altitude of about 30 m. 

 A speeies well cliaracteri/ed by ils glanduhir-dcnt iciilatc leaves. 



