THAI FOREST BULLETIN

THE MAGNOLIACEAE OF THAILAND (H.P. NOOTEBOOM & P. CHALERMGLIN)
6. Magnolia citrata Noot. & Chalermglin, Blumea 52: 559. 2007. Type: Thailand,
Chiang Mai, Mae Taeng distr., Mon Angket, Smitinand 90-269 (BKF 96932) (holotype
BKF). Fig. 1.
Tree to 35 m high and 100–150 cm diam. Twigs 5–7(–10) mm thick in innovations,
conspicuously elliptic, lenticellate, the youngest parts minutely appressed-puberulous,
hairs yellowish. Stipules free from the petiole, the margins yellowish puberulous. Leaves
evenly distributed, spirally arranged; petiole 30–40 mm long (and 3–4 mm thick), blade
minutely yellowish hairy; obovate, 11–30 by 8–18 cm; base rounded (but narrowed
near the petiole); apex shortly acuminate; pairs of lateral nerves 9–11, meeting in an
intramarginal vein close to the margin; reticulation beneath distinct, densely netted.
Brachyblast minutely yellowish appressed-puberulous, 15–35 mm long, slender, 3–4 mm
thick, 2–3 nodes; pedicel minute or absent. Flowers pseudoaxillary on a brachyblast;
strongly fragrant; white; tepals 9, subequal; 4–4.5 by 0.8–1.5 cm, thick fleshy, narrowly
obovate or spathulate; stamens 9–12 mm long, connective appendage narrowly triangular
(to subulate), 1–1.5 mm long, filaments 2–3 mm long, anthers latrorse or sublatrorse; 6–7
mm long; gynoecium stipitate, brownish greyish puberulous, 8–14 mm high; gynophore
6–8 mm long; carpels 6–10, number of ovules per carpel (3–)4 or more. Fruiting carpels
at least finally free, dehiscing along the dorsal suture; glabrous, 5–7.5 by 3.5–5 cm,
gynophore under fruit present, 30–40 mm long.
Thailand.— NORTHERN: Chiang Mai, Nan; NORTH-EASTERN: Loei.
Distribution. — Endemic.
Ecology. — Hill evergreen forest (tropical rain forest). Altitude 1,200–1,400 m.
Flowering: April–May; fruiting May–October.
Vernacular. — Champi chang (จำปี ช้าง).
Conservation status.— NE.
Notes.— The leaves when crushed give a licorice smell, the outer seed coat smells
like Cymbopogon citrata (lemon grass/ta krai).
7. Magnolia duperreana Pierre, Fl. Forest Cochinch.: 1: t. 1. 1879.— Kmeria duperreana
(Pierre) Dandy, Bull. Misc. Inform. Kew 1927: 262. 1927; H.Keng, Fl. Thailand 2(3):
2260. 1975. Type: Cambodia, Knang Repœu, Pierre 749 (holotype P).
Small or medium sized tree to 20(–30) m high and 25–30 cm diam., sparsely
minutely hairy at least on stipule margins, glabrescent. Twigs glabrous, vegetative buds
finely short-pubescent; stipules adnate to petiole for 75–100 %, puberulous. Leaves with
25–45 mm long petiole; blade glabrous beneath except midrib which bears some scattered
hairs, elliptic or obovate, 11–30 by 5.5–10.5 cm; base cuneate, or attenuate; apex rounded
or acuminate; pairs of lateral nerves 12–14, meeting in an intramarginal vein not close
to the margin; reticulation beneath distinct, densely netted. 30–50 mm long; Brachyblast
30–50 mm long in male flowers; stout or slender, 1 node; pedicel absent. Flowers terminal
on the twig; unisexual; white; in male flowers tepals subequal, 8–13; in female flowers
outer tepals 3–4, 2.5–3 by 1–1.2 cm; inner tepals 6–9; stamens 12 mm long, connective
appendage triangular with a sharp pointed tip, anthers subintrorse. Receptacle short, the
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