e-Flora of Thailand
Volume 14 > Part 3 > Year 2019 > Page 486 > Hypericaceae > Cratoxylum
5. Cratoxylum neriifolium Kurzwfo-0000625771
J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 41(2): 293. 1872; Dyer in Hook.f., Fl. Brit. India 1: 257. 1874; Kurz, Forest Fl. Burma 1: 85. 1877; Gamble, Man. Ind. Timb.: 48. 1881; Prain, Bengal Pl. 1: 244. 1903; Brandis, Indian Trees: 47. 1907; Gagnep., Fl. Indo-Chine [P.H.Lecomte et al.] 1(4): 291. 1910; Craib, Fl. Siam. 1: 112. 1925; Gagnep., Fl. Indo-Chine [P.H.Lecomte et al.] Suppl. 1(3): 254. 1943.— Cratoxylum sumatranum Blume subsp. neriifolium (Kurz) Gogelein, Blumea 15: 463. 1967; S.Gardner et al., Field Guide Forest Trees N. Thailand: 49. 2000. Plate LIII: A.
Accepted Name : This is currently accepted.
Synonyms & Citations :
Description : Deciduous trees 7–20 m tall; dbh 40 cm; outer bark thick, roughly cracked and flaking, black, fissured, very rough; exudate not recorded; branchlets terete to flattened, smooth, scars absent, black to black-red to green. Leaves sessile; lanceolate to elliptic to oblong, 5.7–10.3 by 1.5–3.1 cm, base rounded to slightly cordate, apex acute to rounded to acuminate, coriaceous and tough, occasionally glaucous, midrib obviously depressed on upper surface more distinct on lower surface, light yellow to red/brown on upper surface, yellow to dark red on lower surface, secondary, intersecondary and intramarginal veins present, all visible. Inflorescence axis flattened, panicle with many terete branches; flowers usually in groups of 3, forming an elongated inflorescence not in the axils of mature leaves but on leaf twigs; length of pedicel variable. Sepals greenish-brown, 6 by 3 mm, obovate. Petals twice as long as sepals, bright scarlet; filaments free. Ovary 1.5–3 mm long. Fruit 8–9 by 4–5 mm, covered by persistent sepals. Seeds 6–8 per locule.
Thailand : NORTHERN: Chiang Mai, Chiang Rai, Lampang, Phrae, Phitsanulok; NORTH-EASTERN: Udon Thani; EASTERN: Nakhon Ratchasima; SOUTH-WESTERN: Uthai Thani, Kanchanaburi; PENINSULAR: Trang.
Distribution : India, Myanmar (type), Laos, Cambodia.
Ecology : Deciduous and evergreen forests, on limestone, from 150 to 800 m alt. Flowering: April–August; fruiting: (August) September–March.
Vernacular : Khi tio (ขี้ติ้ว), tio dam (ติ้วดำ )(Northern); taeo (แต้ว)(Udon Thani).
Uses: Used in construction, and for wooden utensils (e.g. handles of chisels and hammers).