THAI FOREST BULLETIN

THE MAGNOLIACEAE OF THAILAND (H.P. NOOTEBOOM & P. CHALERMGLIN)
Thailand.— NORTH-EASTERN: Phetchabun; Loei; EASTERN: Chaiyaphum; SOUTH-
WESTERN: Kanchanaburi.
Distribution.— Endemic.
Ecology.— Hill evergreen forest, tropical rain forest. Altitude 600–1,150 m.
Flowering April–May; fruiting June–October.
Vernacular.— Champi si mueang thai (จำปี ศรีเมืองไทย).
Conservation status.— NE.
25. Magnolia utilis (Dandy) V.S.Kumar, Kew Bull. 61: 185. 2006.— Manglietia utilis
Dandy, Bull. Misc. Inform. Kew 1927: 310. 1927. Type: Burma, Southern, Parker 2320
(holotype K).— Manglietia dolichogyna Dandy ex Noot., Blumea 31: 95. 1985.—
Magnolia dolichogyna (Dandy ex Noot.) Figlar & Noot., Blumea 49: 95. 2004. Type:
Malaysia, Sabah, Ranau, Hot Spring, SAN 41051 (holotype L; isotype san).
Tree to 30 m high and 40–150 cm diam. Twigs 3.5–6 mm thick in innovations,
glabrous. Stipules adnate to petiole for 30–60 %. Leaves crowded at the end of the
branchlets; petiole 15–45 mm, stipular scars 10–16 mm long; blade minutely (scattered)
hairy or glabrous, glaucous or not beneath, elliptic or obovate, 15–35 by 5–12 cm; base
cuneate or attenuate-cuneate; apex shortly acuminate, acumen 3–15 mm; pairs of lateral
nerves 10–15; inconspicuously meeting in an intramarginal vein not close to the margin;
reticulation beneath distinct, laxly netted. Peduncle glabrous, 20–40 mm long, stout,
3–4 mm thick, 1–2 nodes; pedicel present or absent, 0–12 mm. Flowers terminal on
the twig; strongly fragrant; yellow or yellowish (when older base of tepals becoming
reddish); tepals 9, subequal (becoming smaller from outer to inner whorl); outer tepals
3, (3–)5–8 by 2–4 cm, greenish, obovate; inner tepals 6, spathulate, 4–6 by 15–20 mm
broad; yellow; stamens including the appendage 12–20 mm long, connective appendage
narrowly triangular, 2.5–4 mm long, anthers introrse; gynoecium not stipitate, glabrous,
cylindrical or conical; carpels 50–70, number of ovules per carpel 4 or more; 1.8–2.2 mm
long. Fruiting peduncles stout, glabrous, 2–4 cm long. Fruits cylindrical, 4–13 by 2–4
cm, fruiting carpels fused, clustered close together, becoming free at dehiscence which
is along the dorsal suture; fruiting carpels glabrous, 1.2–1.8 cm long; scars of perianth
and stamens along torus under fruit 10–20 mm long; seeds 2–11 in each carpel, 4–6 mm
long.
Thailand.— NORTHERN: Mae Hong Son, Tak; SOUTH-WESTERN: Kanchanaburi,
Phetchaburi, Prachuap Khiri Khan; PENINSULAR: Chumphon, Ranong, Phangnga.
Distribution.— Burma, Peninsular Malaysia, Borneo.
Ecology.— Tropical lower montane forest. Altitude 600–1,100 m.
Vernacular.— Champa luang (จำปาหลวง).
Conservation status.— NE.
Notes.— In continental Asia the flowers are larger than in Borneo.
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