Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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ANACARDIACEAE

SUMAC or CASHEW FAMILY

Dieter H. Wilken

Shrub, tree, generally dioecious or flowers bisexual and unisexual, ± resinous, sometimes milky, generally aromatic
Leaves simple or compound, alternate, deciduous or evergreen; stipules 0
Inflorescence: raceme or panicle; flowers generally many
Flower generally unisexual, radial; sepals 5, base generally ± fused; petals 5, generally > sepals, free; stamens 5 or 10, reduced and sterile in pistillate flowers; ovary superior, vestigial or 0 in staminate flowers, subtended by ± lobed, disk-like nectary, chamber generally 1, ovule generally 1, styles 1–3
Fruit drupe-like, glabrous, sticky, or short-hairy; pulp ± resinous, sometimes aromatic
Genera in family: 70+ genera, ± 850 species: tropical, warm temp; some ornamental (Rhus, Schinus ), some cultivated for fruit (Anacardium , cashew; Mangifera , mango)
Reference: [Brizicky 1962 J Arnold Arbor 43:359–375]
TOXIC: many genera produce contact dermatitis.

TOXICODENDRON

POISON OAK, POISON IVY

Shrub, tree, vine, generally dioecious
Leaves generally ternate or pinnately compound, ± resinous; leaflets 3–9, lateral generally opposite, thin to ± leathery, entire, toothed, or lobed
Inflorescence: raceme or panicle, axillary, ± open; flowers pedicelled
Flower: stamens 5, sterile or reduced in pistillate flowers; styles ± fused, stigmas 3
Fruit generally spheric, becoming papery or leathery, cream to brown; pulp resinous
Species in genus: 6 species: Am, eastern Asia
Etymology: (Latin: poisonous tree)
Reference: [Gillis 1971 Rhodora 73:161–237,370–443]
TOXIC: resin on leaves, stems, fruits causes severe contact dermatitis; one of the most hazardous plants in CA.

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