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120<br />
<strong>THAI</strong> <strong>FOREST</strong> <strong>BULLETIN</strong> (BOTANY) 37<br />
long, anthers latrorse or sublatrorse; gynoecium stipitate, greyish silky; gynophore 5–7<br />
mm long; carpels 25–43. Fruiting peduncles glabrous, 2.2–3.8 cm long by 3–4 mm thick.<br />
Fruits cylindrical, 5–15 by 3–5 cm, fruiting carpels connate, but becoming mostly free on<br />
dehiscence with some carpels splitting via the dorsal suture while apical parts of others<br />
falling away circumscissile; carpels lenticelled, glabrous, 1.5–2.2 cm long; gynophore<br />
under fruit present, 15–20 mm long.<br />
Thailand.— NORTHERN: Phitsanulok, Chiang Rai; SOUTH-EASTERN: Prachin Buri;<br />
SOUTHWESTERN: Kanchanaburi.<br />
Distribution.— Endemic.<br />
Ecology.— Single tree in preserved area, and cultivated as temple tree. Dry<br />
evergreen forest. Altitude 100–500 m.<br />
Vernacular.— Champa khao (จำปาขาว).<br />
Conservation status.— NE.<br />
Notes.— The fruit looks exactly intermediate between the fruits of M. champaca<br />
and M. baillonii. The hybrid has the same chloroplast DNA sequences as M. champaca,<br />
which is the mother plant. (H. Azuma, pers. comm.).<br />
Figure 1. Magnolia citrata Noot. & Chalermglin: A. habit with ripening fruit (Smitinand 90-269); B. flower buds<br />
(Chalermglin 420410); C. flower (Chalermglin 420410).
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