Directory       News       Site Map       Home
         
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Previous taxon

OLEACEAE OLIVE FAMILY

Family description, key to genera by Thomas J. Rosatti; treatment of genera by James Henrickson, except as noted

Perennial herb to tree [vine], hairs 0 or peltate or not; rarely dioecious. Leaf: simple to odd-pinnately compound, alternate or generally opposite, deciduous or evergreen; stipules 0. Inflorescence: various; flowers >= 1. Flower: generally bisexual, generally radial; calyx generally minute (0), tube cup-shaped, lobes 4–15; petals (0)4–6(8), generally fused; nectar disk often present; stamens (0)2(4–5), epipetalous; pistil 1, ovary superior, chambers 2, each 2–4 ovuled, placenta axile, style 1, stigma generally 2-lobed. Fruit: drupe, capsule, or winged achene. Seed: 1 per chamber.
± 25 genera, 900 species: ± worldwide; some cultivated for ornamental (Forsythia; Jasminum, jasmine; Ligustrum, privet; Syringa, lilac) or food (Olea, olive). [Lee et al. 2007 Molec Biol Evol 24:1161–1180] —Scientific Editor: Bruce G. Baldwin.
Unabridged references: [Jensen et al. 2002 Phytochemisty 60:213–231; Kim & Jansen 1998 Amer J Bot 85(6): Suppl. 139; Wallander & Albert 2000 Amer J Bot 87(12):1827–1841]

Key to Oleaceae

FRAXINUS ASH
Shrub or tree; generally dioecious, often bisexual (in California). Stem: older bark smooth or becoming furrowed, generally gray; lenticels broadly elliptic; twigs cylindric to 4-angled, glabrous to hairy; developing short-shoot spurs. Leaf: simple or generally odd-pinnate, opposite, deciduous; petioles channeled, occasionally winged, hairy or not; if compound, leaflets (1)3–9, lanceolate to ovate or obovate, generally acute to acuminate at tip, entire or ± crenate-serrate, generally dark green adaxially, pale abaxially, thin to ± leathery in drier habitats, generally glabrous or with simple hairs abaxially or throughout, proximal opposite on rachis, stalked or not, terminal generally largest, stalk longer. Inflorescence: axillary, of clusters or long-branched panicles; flowers pedicelled. Flower: unisexual or bisexual; calyx 1–2 mm, shallowly ± 4-lobed to cut, persistent on fruit; petals 0, 2, or 4, free or fused to basal filaments. Staminate flower: stamens 2(3); pistil vestigial. Pistillate flower: stamens 0; style slender; ovules 2 per chamber. Fruit: achenes, winged, wings generally flat, extending to tip or base of seed-containing chamber. Seed: generally 1.
± 65 species: temperate. North America, Eurasia, tropical Asia. (Latin: ancient name) [Little 1952 J Washington Acad Sci 42:369–380; Miller 1955 Cornell Univ Agric Exp Sta Mem 335:1–64] Fraxinus uhdei (Wenzig) Lingelsheim, Mexican ash, cultivated in western United States; similar to Fraxinus velutina, with ± larger leaves and leaflets, generally with stiff hairs to 0.5 mm bordering abaxial midvein and occasionally 2° veins abaxially (as occasionally in Fraxinus velutina), and ± larger fruit, but margins tapered to near base of fruit body; native northern Mexico to Honduras.

Key to Fraxinus

F. latifolia Benth. OREGON ASH
NATIVE
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.
2n=46. Canyons, streambanks, woodland; < 1700 m. Northwestern California, Cascade Range, Sierra Nevada, Great Central Valley, San Francisco Bay Area, Modoc Plateau; to British Columbia. Pure in northern California; mostly introgressed with Fraxinus velutina in southern California. Mar–May [Online Interchange]
Unabridged synonyms: [Fraxinus oregona Nutt.; Fraxinus pennsylvanica subsp. oregona (Nutt.) G.N. Mill.]

Previous taxon: Fraxinus dipetala
Next taxon: Fraxinus parryi

Contact/Feedback

Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 19 2014
Citation for this treatment: [Author of taxon treatment] 2013. Fraxinus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=26105, accessed on Dec 19 2014

Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.


Geographic subdivisions indicated for the distribution of Fraxinus latifolia Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

 

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.