Jepson Flora Project: Jepson Interchange    

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

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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

CORNACEAE

DOGWOOD FAMILY

James R. Shevock

Perennial, shrubs, trees, sometimes dioecious
Leaves generally opposite, simple, generally entire, generally deciduous; stipules 0
Inflorescence: cyme or racemes, generally umbel- or head-like, sometimes subtended by showy, petal-like bracts
Flower generally small, generally bisexual; calyx generally 4-lobed; petals 0 or 4(5), free; stamens generally as many as and alternate petals; ovary inferior, chambers 1–4, each 1-ovuled, style simple, stigma 1–4-lobed
Fruit: generally drupe or berry
Seeds generally 1–2
Genera in family: ± 12 genera, ± 100 species: especially n temp (also s tropical, subtropical). Cult as ornamental (Cornus, Aucuba ); some timber species. Genera diverse; many have been treated as constituting families, but trend is to treat Cornaceae broadly
Reference: [Eyde 1987 Syst Bot 12:505–518]

CORNUS

DOGWOOD

Perennial, shrubs, trees
Leaves generally opposite or whorled, simple, generally deciduous; both ends generally tapered
Inflorescence small, head- or umbel-like, and surrounded by showy bracts (or cyme, large, open, lacking showy bracts)
Flower generally minute; sepals 4, fused at base; petals 4; stamens 4, attached to receptacle; style 1, thread-like, stigma simple
Fruit: drupe; stone 1–2-chambered
Species in genus: ± 50 species: n temp (rare in s hemisphere); many cultivated as ornamental, some for autumn color. Some fruit used for jam, syrup
Etymology: (Latin: horn, from the hard wood)
Divided by some into at least 6 genera.

Native

C. sericea L.

AMERICAN DOGWOOD

Shrub generally 1.5–4 m
Stem: branches reddish to purple, ± glabrous to minutely strigose; older stems grayish green, generally glabrous
Leaves deciduous; blade generally 5–10 cm, lanceolate to ovate or elliptic, paler beneath, sparsely strigose, veins 4–7 pairs
Inflorescence: cyme, strigose
Flower: petals 2–4.5 mm; style 1–3 mm
Fruit 7–9 mm, white to cream; stone smooth to grooved on face, furrowed on sides
Ecology: Many, generally moist habitats
Elevation: < 2800 m.
Bioregional distribution: California Floristic Province, White and Inyo Mountains
Distribution outside California: to Alaska, e N.America, Mexico
Highly variable complex with many local forms, treated broadly here. Sspp. intergrade widely
Horticultural information: IRR: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24; rather INV.

Native

subsp. sericea

Plant glabrous to ± strigose, not rough-hairy
Flower: petals generally 2–3 mm; style 1–2 mm
Fruit: stone smooth on faces, furrowed on sides
Ecology: Habitats of sp
Elevation:
Bioregional distribution: California Floristic Province, White and Inyo Mountains (uncommon in s California)
Flowering time: May–Jul
Synonyms: C. X californica C.A. Mey., including var. nevadensis Jeps.; C. stolonifera Michx

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bioregional map for CORNUS%20sericea%20subsp.%20sericea being generated
 
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)

Retrieve Jepson Interchange Index to Plant Names entry for Cornus sericea subsp. sericea
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