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1. Parthenocissus Planchon in A. Candolle & C. Candolle, Monogr. Phan. 5: 447. 1887.

地锦属 di jin shu

Authors: Prof. Zhiduan Chen & Jun Wen

Psedera Necker ex E. L. Greene; Quinaria Rafinesque (1830), not Loureiro (1790).

Lianas, woody, hermaphroditic. Tendrils racemosely 4-12-branched, young apex expanded or curving, later turning into adhesive disks or suckers. Leaves simple, 3-foliolate, or palmately 5(-7)-foliolate. Inflorescence a panicle or a loose corymbose polychasium, pseudoterminal. Flowers 5-merous. Calyx cupular, glabrous, 5-dentate. Petals free. Stamens 5. Disk inconspicuous, rarely with 5 nectaries. Style conspicuous. Berry 1-4-seeded. Seeds obovoid, chalazal knot rounded at middle; ventral raphe raised; 2 lateral ventral holes furrowed upward from base to apex; endosperm cross-section M-shaped. 2n = 40.

About 13 species: Asia, North America; nine species (six endemic, one introduced) in China.

1 Leaves simple, rarely 3-foliolate on lower 2-4 short shoots   (2)
+ Leaves palmately compound, 3-foliolate or simple on long branches   (3)
2 (1) Old branches without woody wings; branchlets glabrous or with sparse, soft hairs; petioles and leaves glabrous or only veins abaxially sparsely pubescent.   4 P. tricuspidata
+ Old branches mostly with woody wings; branchlets, petioles, and abaxial leaf surface densely ferruginous pilose, adaxially pubescent.   5 P. suberosa
3 (1) Leaves palmately 5-foliolate; inflorescence a paniculate-polychasium, typically with a well-developed main axis   (4)
+ Leaves 3-foliolate, or simple on long branches; inflorescence a panicle or corymbose polychasium   (6)
4 (3) Young tendrils with slender, slightly curving apex, but not conspicuously expanded at tip.   9 P. quinquefolia
+ Young tendrils with apex expanded as tubercles   (5)
5 (4) Stem oblate, or with conspicuous 6 or 7 ridges; leaflet adaxial surface conspicuously bullate.   7 P. laetevirens
+ Stem with 4 ridges; leaflet surfaces not bullate.   8 P. henryana
6 (3) Inflorescence a racemose polychasium, relatively compact, main axis well developed, nearly as thick as branch subtending it; young apex of tendril slightly expanded as fist-shaped adhesive disks.   1 P. feddei
+ Inflorescence a corymbose polychasium, loose, main axis slender; young apex of tendril slender and curving or expanded as ball-shaped adhesive disks   (7)
7 (6) Leaves of 2 types, 3-foliolate and simple; young apex of tendril expanded to ball-like structures.   6 P. dalzielii
+ Leaves mostly 3-foliolate, rarely mixed with 3-lobed, simple leaves; young apex of tendril slender, curving   (8)
8 (7) Branchlets, petioles, and leaflet veins abaxially sparsely pilose; central leaflet 5-13 × 3-6.5 cm, margin with 6-11 teeth on each side.   2 P. semicordata
+ Branchlets, petioles, and leaflets abaxially glabrous or only veins abaxially sparsely pubescent; central leaflet 2.5-5 × 1.5-3 cm, margin with 3-5 teeth on each side.   3 P. chinensis

  • List of lower taxa


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