Cornaceae Bercht. ex J.Presl

Family

Angiosperms > Cornales

Characteristics

Trees or shrubs, rarely rhizomatous herbs, mostly deciduous, sometimes evergreen, hermaphroditic [dioecious in African species]. Old branches terete, pith white or brown, lenticels and leaf scars often conspicuous; young branches rounded or slightly 4-ridged; nodes slightly swollen. Leaves opposite, rarely alternate or whorled, estipulate, petiolate, rarely sessile; leaf blade simple, entire, pinnately veined, rarely parallel veined, often pubescent, sometimes papillate; trichomes often 2-armed, arms equal or unequal, appressed and T-shaped, or raised and V-or Y-shaped, or pseudofiliform. Inflorescences cymose, paniculate, corymbose, umbellate, or capitulate, terminal, rarely lateral; bracts minute, not petaloid, early caducous, or 4(–6) and usually showy. Flowers 4-merous. Calyx tubular, fused to ovary, minutely 4-dentate or truncate. Petals 4, free, creamy white or yellow, rarely dark reddish purple or partially dark reddish purple, valvate. Stamens 4, surrounding a fleshy floral disk, alternate petals. Anthers longitudinally dehiscent. Ovary inferior; carpels 2, rarely 3 or 4; locules 2, rarely 3 or 4; ovules pendulous, 1 per locule; style 1, columnar or clavate; stigma capitate, disciform, punctate, or truncate, sometimes slightly 2-lobed. Fruit a drupaceous berry, white, blue, red, or black, berries distinct or fused into a fleshy syncarpous compound fruit; stone of fruit bony, 1-or 2(–4)-chambered, seeds 1 or 2(–4); endosperm oily; cotyledons 2, leaflike.
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Evergreen or deciduous (not in Australia), monoecious or dioecious (not in Australia) trees, shrubs or lianas (not in Australia), with 2-armed, stellate or glandular hairs. Leaves opposite or alternate, simple, entire to lobed, domatia often present, petiolate; stipules absent. Inflorescences terminal or axillary, cymose, paniculate or in heads surrounded by petal-like involucral bracts. Flowers bisexual or unisexual (not in Australia), actinomorphic. Calyx adnate to ovary, obsolete to distinct with 4–10 lobes. Petals 4–10, free or basally connate, valvate in bud. Stamens 4–40, alternating with petals (Cornus) or in a single whorl, surrounding an epigynous nectary disc (Alangium); filaments free, often barbate or villose (Alangium); anthers 2-locular, dehiscing by longitudinal slits. Ovary inferior, 1–4-carpellate; placentation apical; ovule 1 per locule; style simple with 2–3-lobed or capitate stigma or rarely short with 2 elongate stylodia. Fruit a drupe, sometimes fused into a fleshy compound fruit (Cornus), sometimes crowned by persistent calyx and disc (Alangium). Seeds with endosperm.
Herbs, shrubs, or trees, perennial, deciduous, synoecious [dioecious]; hairs unbranched or 2-armed (occasionally 1 arm absent). Leaves usually opposite, sometimes alternate, simple; stipules absent; petiole usually present, sometimes absent; blade margins entire; venation pinnate (eucamptodromous). Inflorescences axillary or terminal, cymes, umbels, or capitula. Flowers bisexual [unisexual]; perianth and androecium epigynous; hypanthium completely adnate to ovary; sepals 4(–5), distinct or slightly connate; petals 4(–5), distinct, valvate; nectary present, intrastaminal; stamens 4(–5), distinct, free; anthers dehiscing by longitudinal slits; pistil 1, [1–]2[–4]-carpellate, ovary inferior, [1–]2[–4]-locular, placentation apical; ovules 1 per locule, apotropous to epitropous; style 1; stigmas 2. Fruits drupes, rarely fused into a syncarp. Seeds 1(–2) per fruit.
Trees, shrubs or rarely perennial herbs. Leaves simple, alternate or opposite, entire or serrate; stipules usually absent. Flowers hermaphrodite or dioecious, in racemes, panicles, umbels, clusters of Cymules or compact heads. Calyx-tube adnate to the ovary; sepals 4–5 or absent. Petals 4–5 or rarely absent, imbricate or valvate. Stamens 4–5, alternating with the petals. Ovary inferior, usually 2-celled but often 1–4 (–10)-celled; ovules pendulous, one per loculus. Fruit a drupe or berry; embryo small in abundant endosperm
Flowers hermaphrodite or unisexual (then the plants usually monoecious or polygamodioecious), actinomorphic in cymes or panicles, umbels or rarely in capitula and then with large petal-like bracts
Stamens the same number as the petals and alternating with them, anthers 2-celled dehiscing laterally or rarely introrsely
Placentation usually axile, with 1 anatropous pendulous ovule in each loculus
Leaves opposite or less commonly alternate, simple, exstipulate
Petals 4–5 (rarely lacking), aestivation imbricate or valvate
Trees, shrubs, rarely perennial herbs or woody lianes
Style 1 or several rising from a glandular disk
Seed with copious endosperm and a small embryo
Fruit typically a drupe, sometimes a berry
Calyx-tube adnate to the ovary, sepals 4–5
Ovary inferior, with (1)2–4 locules
Ovules with 1 integument
Life form perennial
Growth form
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Foliage retention evergreen
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Hardiness (USDA) 8-12

Usage

Many species of Cornus are cultivated as ornamentals, valued particularly for their white or colourful floral bracts. The fruits of Cornus mas (Cornelian Cherry) are cultivated in Asia for medicinal uses (Xiang & Boufford 2005, Hosseinpour-Jaghdani et al. 2017). The wood of some Cornus species is used for a variety of purposes, and some species have edible fruits used in jam (Brummitt 2007: 112).
Uses medicinal ornamental wood
Edible -
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Cultivation

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Images

Cornaceae unspecified picture
Cornaceae unspecified picture

Distribution

Cornaceae world distribution map, present in Australia and China

Identifiers

LSID urn:lsid:ipni.org:names:30002899-2
WFO ID wfo-7000000151
COL ID 8KL
BDTFX ID 101033
INPN ID 187372
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Alangiaceae Cornaceae

Lower taxons

Toricellia Cornus Alangium