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FOC | Family List | FOC Vol. 7 | Lauraceae

18. Alseodaphne Nees in Wallich, Pl. Asiat. Rar. 2: 61, 71. 1831.

油丹属 you dan shu

Authors: Xi-wen Li, Jie Li & Henk van der Werff

Evergreen trees. Terminal buds scaly. Leaves alternate, always clustered near apex of branchlet, pinninerved, often turning black when dry. Inflorescence axillary, paniculate or racemose; bracts and bracteoles deciduous. Flowers bisexual, 3-merous. Perianth tube short; perianth lobes 6, subequal or outer 3 smaller, slightly dilated after anthesis but absent in fruit. Fertile stamens 9, in 3 whorls; filaments of 1st and 2nd whorls glandless, those of 3rd whorl each with 2 glands at base; anthers 4-celled; cells of 1st and 2nd whorls introrse, those of 3rd whorl extrorse or upper 2 lateral and lower 2 extrorse. Staminodes 3, of innermost whorl, very small, nearly sagittate. Ovary partly immersed into shallow perianth tube; style often as long as ovary; stigma small, inconspicuous, discoid. Fruit black or purplish black when mature, ovoid, oblong, or subglobose; fruit stalk red, green, or yellow, sometimes nearly cylindric, fleshy, pulpy, always warty, truncate at apex.

Fifty species or more: Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Philippines, Sri Lanka, Thailand, Vietnam; ten species (seven endemic) in China.

1 Pedicels up to 10 mm; scales of terminal bud imbricate on margin.   1 A. gracilis
+ Pedicels short, less than 8 mm; scales of terminal bud not imbricate on margin   (2)
2 (1) Terminal bud large, ovoid, up to 2.5 cm; fruit large, oblong, up to 3 cm in diam..   2 A. sichourensis
+ Terminal bud small, ovoid or globose, ca. 2 mm, usually inconspicuous; fruit oblate, globose, ovoid, or oblong, below 3 cm in diam. when it is oblate, globose, or ovoid, but up to 5 cm in diam. when it is oblong, in latter case terminal bud inconspicuous   (3)
3 (2) Branchlets robust, ca. 7 mm in diam., wrinkled, with dense leaf scars near top; fruit stalk warty; fruit oblate.   3 A. rugosa
+ Branchlets slender, below 3 mm in diam., not wrinkled; fruit stalk not conspicuously warty; fruit not oblate   (4)
4 (3) Branchlets conspicuously gray when dry   (5)
+ Branchlets not gray when dry   (7)
5 (4) Inflorescence brown pilose, 2-3(-4) cm.   6 A. yunnanensis
+ Inflorescence glabrous, 3.5-8(-12) cm   (6)
6 (5) Leaf blade narrowly elliptic, 6-10(-16) × 1.5-3.2(-4.2) cm, leathery, shallowly foveolate adaxially, lateral veins 12-17 pairs; fruiting pedicel 3-8 mm, not verrucose.   4 A. hainanensis
+ Leaf blade oblong or oblanceolate-oblong, 5-13 × (0.8-)1.2-2.8 cm, papery, hardly foveolate on both surfaces, lateral veins 7 or 8 pairs; fruiting pedicel 5-7 mm, densely grayish linear verrucose.   5 A. huanglianshanensis
7 (4) Panicle much longer than leaf blade; leaf blade hairy abaxially   (8)
+ Panicle shorter than or as long as leaf blade; leaf blade glabrous abaxially   (9)
8 (7) Leaf blade oblong or lanceolate-oblong, 6-14 × 2.2-3.8 cm, not foveolate on both surfaces, sparsely yellowish brown pubescent abaxially; fruit globose, up to 2.2 cm in diam..   7 A. marlipoensis
+ Leaf blade oblong, 12-24 × 6-12 cm, conspicuously foveolate on both surfaces, rusty pubescent abaxially; fruit oblong, ca. 2.8 cm.   8 A. andersonii
9 (7) Branchlets, leaf blades, and panicles all glabrous; leaf blade elliptic to oblong, 10.5-17 × 4-6.5 cm, not green-white abaxially.   9 A. hokouensis
+ Young part of branchlet as well as panicles densely brown tomentulose; leaf blade obovate-oblong or oblong, 14-26 × 6-15 cm, green-white abaxially when young.   10 A. petiolaris

Lower Taxa


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