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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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ACERACEAE

MAPLE FAMILY

James R. Shevock

Shrubs, trees, sometimes monoecious, dioecious, or with staminate and bisexual flowers
Leaves opposite, generally simple, generally palmately lobed (rarely pinnate), generally deciduous; stipules 0
Inflorescence: panicle, raceme, or umbel-like
Flower small; perianth generally ± yellowish green; sepals (4)5, free; petals generally 5 (sometimes 0, 4, or 6), free, generally sepal-like; stamens generally 8 (sometimes 5, 10, or 12), generally attached to edge of nectary disk; ovary superior, chambers 2, each 2-ovuled
Fruit: generally pair of achenes, conspicuously winged
Seed generally 1 per achene
Genera in family: 2 genera, ± 120 species: n temp, tropical mtns (Dipteronia : 2 species: China). Some Acer important as timber or ornamental, often has bright autumn colors
Reference: [Ogata 1967 Bull Tokyo U For 63:89–206]

ACER

MAPLE


Leaf simple or pinnately compound
Inflorescence: flower clusters drooping, generally appearing before or with emerging leaves
Fruit paired, each with elongate wing ribbed on proximal side
Species in genus: ± 118 species: n hemisphere
Etymology: (Latin name for maple)

Native

A. circinatum Pursh

VINE MAPLE

Shrub or small tree, 1–6 m, often reclining and rooting, vine-like, generally with staminate and bisexual flowers
Stem: twigs slender, glabrous
Leaf 5–12 cm wide, palmately 5–7-lobed to near middle
Inflorescence dense, 4–10-flowered
Flower: sepals red-purple; petals greenish white
Fruit reddish when mature; body glabrous; wings widely spreading (nearly 180°)
Ecology: Shaded streambanks
Elevation: < 1500 m.
Bioregional distribution: n&c Northwestern California, High Cascade Range, n Sierra Nevada
Distribution outside California: to Alaska
Horticultural information: IRR: 4, 5, 6, 17 &SHD: 1, 2, 3, 7, 8, 9, 14, 15, 16, 18, 19, 20.

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bioregional map for ACER%20circinatum being generated
 
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