Cratoxylum formosum

Primary tabs

Cratoxylum formosum

Description

Tree to 35 m tall, deciduous, glabrous, or partly pubescent; trunk spiny at base, bark grey, coarsely fissured, scaly; young shoots glabrous or pubescent, with interpetiolar scar interrupted. Leaves with petiole 5-15 mm, 3½-14 by 1-7 cm, elliptic or sometimes obovate to oblong or lanceolate or ovate, apex acute or shortly acuminate to rounded, base broadly cuneate to rounded, herbaceous to chartaceous, sometimes glaucous beneath. Inflorescence of 1-6-flowered cymules in lower axils of current shoots or, if shoot fails to develop, apparently axillary on older stems; pedicels 3-10(-15)mm. Flowers heterodistylous. Sepals 4-7 by 2-4 mm. Petals white or pink to red or (very rarely) purplish, 7-17 by 3-7 mm; nectary scale 2-4 mm, rounded, entire or sub-entire. Stamen fascicles 5-14 mm, with stamens relatively lax, 20 per fascicle; anther gland present, purple, or absent. Staminodial fascicles (if well developed) orange-red, trigonous, linguiform, attenuate to truncate, not cucullate. Ovary 2-4½ mm long; styles 2-8 mm. Capsule 10-16 by 4-6 mm, three times as long as sepals, ellipsoid, with columella ± half as long as capsule. Seeds (7-)12-17 per loculus, 6-7½ by 2-4 mm, oblanceolate.

Distribution

Asia-Temperate: Hainan (Hainan present), Asia-Tropical: Borneo present; Cambodia (Cambodia present); Jawa (Jawa present); Malaya present; Philippines (Philippines present); Sulawesi (Sulawesi present); Sumatera (Sumatera present), Banka present, Busuanga present, Culion present, Guimaras present, Luzon present, Mindanao present, Mindoro present, Negros present, P. Buton present, Palawan present, Polillo present, S. Andaman Is present, S. Thailand present, Sibuyan present, South Vietnam present
Hainan, South Vietnam, Cambodia, S. Thailand, S. Andaman Is., in Malesia: Sumatra, Malaya, Banka, Java, Borneo, Celebes (incl. P. Buton), Philippines (Luzon, Polillo, Mindoro, Sibuyan, Guimaras, Negros, Busuanga, Culion, Palawan, Mindanao). .

Notes

C. formosum comprises two subspecies which scarcely overlap in distribution. Only subsp. formosum occurs in the Flora area. It differs from subsp. pruniflorum (KURZ) GOGELEIN (S. China and Burma to S. Thailand) in being completely glabrous with leaves elliptic to oblong or rarely lanceolate (not oblong to lanceolate) and the anther connective eglandular (not glandular).

Citation

DYER 1940: Wayside Trees Mal: 325: t. 69
K. & V. 1900 – In: Bijdr.: 137
KURZ 1877 – In: Fl. Burma: 84
DYER 1909 – In: Fl. Gen. I.-C.: 288
SPACH 1836: p. 351. – In: Ann. Sc. Nat.: t. 4A
K. & V. 1900 – In: Bijdr.: 139
PIERRE 1882 – In: For. Fl. Coch.: t. 51
BACK. 1911: Schoolfl. Java: 88
MEIJER 1967 – In: Bot. Newsbull. For. Dept. Sandakan: 64
Engl. 1925 – In: E. & P., Nat. Pfl. Fam., ed. 2, 21: 184
GOGELEIN 1967 – In: Blumea: 467
King 1890 – In: J. As. Soc. Beng.: 147
BACK. & BAKH.F. 1963 – In: Fl. Java: 363
Corner 1939 – In: Gard. Bull. S. S.: 34
GAGNEP. 1909 – In: Not. Syst.: 288
Bl. 1852 – In: Mus. Bot. Lugd. Bat.: 18
TURCZ. 1858 – In: Bull. Soc. Nat. Mosc.: 384
HEND. 1928 – In: Gard. Bull. S. S.: 222
CRAIB 1925 – In: Fl. Siam. En.: 111
Ridl. 1922: p. 153. – In: Fl. Mal. Pen.: f. 16