Volume 7 > Part 2 > Year 2000 > Page 325 > Oleaceae > Jasminum

18. Jasminum decussatum Wall. ex G.Donwfo-0000814028

Gen, Hist. 4: 62. 1837; Kurz, Fl. Burm. 2: 151. 1877; C.B.Clarke in Hook.f., Fl. Br. Ind. 3: 596. 1882; Rid)., Fl. Malay Penins. 2: 313. 1923; Kerr in Fl. Siam. En. 2: 398. 1939. Fig. 26; Plate XIII: 1.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Woody climber, young shoots villous, to rarely almost glabrous. Leaves thickish chartaceous, ovate to lanceolate, 5–11 cm long, 2–6 cm broad; base rounded, sometimes slightly caudate; apex acute to acuminate; villous to velutinous above and especially below, rarely glabrate, persistently villous on the veins and midrib below; margins ciliolate; 3–4 primary veins on each side of the midrib; without domatia; petioles 6–16 mm long, articulate, villous, usually densely so. Inflorescence terminal on side shoots, cymose-corymbose, many-flowered, villous; bracts linear, 1–10 mm long; pedicels 0–3 mm long. Calyx tube 1–1.5 mm long; lobes (5 or) 6, linear, 1–2 mm long, often reflexed, villous to pilose. Corolla white, tube 4–6(–10) mm long; lobes 7–8, 7–8(–9) mm long. 1–2 mm broad, acute to acuminate. Fruit ellipsoid, 10 x 6 mm.

Thailand : NORTHERN: Mae Hong Son (Mae Sariang, Ban Papae); SOUTH-WESTERN: Uthai Thani (Huai Kha Khaeng WS), Kanchanaburi (Bo Noi, Khao Yai, Pilok), Ratchaburi (Ban Bo, Ban Pak Tawan), Phetchaburi (Cha-am), Prachaup Khiri Khan (Bang Saphan, Pranburi); CENTRAL: Saraburi (Sam Lan), Krung Thep Maha Nakhon (Bangkok) (Pak-kret); PENINSULAR: Chumphon (Langsuan, Pang Wan), Ranong (Nam Chut, Ko Payam, Hat Hin Dam), Surat Thani (Ban Na), Phuket (Ko Jamn Yai – type of Jasminum puberulum Ridl., non Baker), Krabi (between Ao Luk and Krabi), Nakhon Si Thammarat (Khao Luang NP), Phatthalung (Ban Na), Trang, Satun (Nam Pa Villages, Thung Nui), Songkhla (Klong Hoi Kong), Yala (Bang Lang Reservoir, near Sandhi 1 Village).

Distribution : Myanmar [(type from Amherst (Kyaikkami)], Malay Peninsula (Perlis, Kedah), Sumatra.

Ecology : Scrub, margins of evergreen forests, from sea level to 700 m alt.

Vernacular : Khiac ngu (เขี้ยวงู), krong jan (กรงจัน).

Notes: The plants from the northern localities tend to be the most glabrous.

Two collections (Shimizu et al. T11331 and 111579) from Phu Miang (on the borders between provinces Phetchabun and Phitsanulok, at between 1,200 and 1,600 m alt.) may be a form of this species, but their calyx lobes are 4 – 5 mm long and corolla tube 15 – 20 mm long.