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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
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|Family: Oleaceae||View Description||Dichotomous Key|
|Genus: Fraxinus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Fraxinus latifolia Benth.
Habit: Tree < 25 m, trunk < 1.5 m diam; dioecious. Stem: bark gray-brown, furrowed; twigs cylindric, brown-gray, +- long-shaggy-hairy or glabrous. Leaf: compound, 12--33(50) cm, +- long-shaggy-hairy or glabrous; petioles 3--7(9) cm, channeled; leaflets (3)5--7, 4--11(14) cm, 2.4--7.5 cm wide, ovate or oblong-(ob)ovate, broadly wedge-shaped to +- rounded at base, acuminate at tip, entire to +- serrate, lateral leaflets +- sessile, terminal leaflet +- larger, stalk to 10--35 mm. Flower: petals 0. Staminate Flower: calyx > 0.5 mm, 4-toothed; anthers 2, 2--3.5 mm. Pistillate Flower: calyx +- 1 mm, finely irregularly cut; style +- 3 mm; stigma +- 1.3 mm. Fruit: 25--50 mm, 5--9 mm wide; body 15--18 mm, +- cylindric, wing flat, extending proximally as tapering margin down 1/2--3/4 body; fruit pedicel tip much expanded. Chromosomes: 2n=46.
Ecology: Canyons, streambanks, woodland; Elevation: < 1700 m. Bioregional Distribution: NW, CaR, SN, GV, SnFrB, MP; Distribution Outside California: to British Columbia. Flowering Time: Mar--May Note: Pure in northern California; mostly introgressed with Fraxinus velutina in southern California.
Unabridged Synonyms: Fraxinus oregona Nutt.; Fraxinus pennsylvanica subsp. oregona (Nutt.) G.N. Mill.
eFlora Treatment Author: Family description, key to genera by Thomas J. Rosatti; treatment of genera by James Henrickson
Jepson Online Interchange
Previous taxon: Fraxinus dipetala
Next taxon: Fraxinus parryi
Citation for this treatment: Family description, key to genera by Thomas J. Rosatti; treatment of genera by James Henrickson 2017. Fraxinus latifolia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=26105, accessed on April 27, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on April 27, 2017.