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FOC | Family List | FOC Vol. 7 | Myristicaceae

1. Knema Loureiro, Fl. Cochinch. 2: 604. 1790.

红光树属 hong guang shu shu

Evergreen trees. Leaf blade papery to leathery, abaxially often papillose and glaucous and rusty tomentose; tertiary veins parallel. Inflorescences short, unbranched or bifurcate, stout, tuberculate by scars of fallen pedicels; flowers densely racemose or subumbellate; bracts caducous; bracteoles inserted on pedicels. Plants dioecious. Flowers red in China. Male flowers often rather large, subglobose or urceolate, with long pedicels. Perianth of 3(or 4) tepals. Filaments connate into stipitate peltate disk; anthers 8-20, short, with bases adnate to margin of disk. Ovary pubescent; style short, stout; stigma lobes connate into a disk with 2 shallow fissures or with lacerate margin. Fruit often with dense tomentum. Aril entire or lacerate at apex.

About 85 species: S Asia from E India to the Philippines, Papua New Guinea; six species in China.

Knema yunnanensis Hu (J. Roy. Hort. Soc. 63: 387. 1938), described from Yunnan, could not be treated here because no material was seen by the present authors.

1 Leaf blade large, widest part more than 7 cm, apex acuminate, base rounded or cordate   (2)
+ Leaf blade smaller, widest part often less than 7 cm, apex acute, shortly acuminate, or acuminate, base cuneate or nearly rounded or subtruncate, never cordate   (3)
2 (1) Leaf blade broadly lanceolate or oblong-lanceolate, rarely oblanceolate, (15-)30-55(-70) × (7-)8-15 cm, base cordate or rounded, lateral veins 24-35 pairs; fruit with hairs 1-3 mm.   1 K. tenuinervia
+ Leaf blade oblanceolate, (15-)24-40 × 7-13 cm, widened at middle, base rounded, lateral veins 20-25 pairs; fruit with hairs 0.5-1 mm.   2 K. linifolia
3 (1) Anthers sessile; fruit with hairs 0.1-1 mm   (4)
+ Anthers nearly stalked; fruit with hairs 1-2 mm   (5)
4 (3) Leaf blade with margins often not parallel, often early glabrescent abaxially; style ca. 1.5 mm; fruit small, less than 2 cm, with rusty nearly granular pubescence.   3 K. globularia
+ Leaf blade with margins nearly parallel, abaxial surfaces with stalked stellate pubescence, glabrous with age; style ca. 0.5 mm; fruit large, 2-3 cm, with rusty dendritic pubescence.   4 K. elegans
5 (3) Leaf blade often oblong-lanceolate, apex acute or acuminate, abaxial surface finely stellate hairy; fruit longer, usually more than 3 cm.   5 K. tonkinensis
+ Leaf blade often lanceolate or linear-lanceolate, apex acuminate or long acuminate, abaxial surface often pallid, early glabrescent, at first with minutely granular or powdery stellate hairs, persistent along midvein and lateral veins; fruit usually less than 3 cm.   6 K. lenta

Lower Taxa


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