|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
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 |
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
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.Key to Fraxinus
± 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.
Tree < 15 m, trunk to 3 dm diam; dioecious. Stem: bark gray, furrowed; twigs cylindric, gray-brown, minutely coarse-hairy to velvety or becoming glabrous. Leaf: compound, 9–20(30) cm, occasionally stiff-leathery, minutely coarse-hairy to velvety throughout or generally adaxially, often becoming glabrous, hairs generally erect, straight, to 0.5 mm; petiole 2–8 cm, channeled; leaflets (3)5–7, 3–10 cm, 1.5–3.5 cm wide, lanceolate to lance-ovate or lance-obovate, tapered to base, long tapered at tip, entire to serrate, lateral leaflets generally smaller, with stalk 4–6(10) mm, terminal leaflet more tapered at base, with stalk 10–27 mm. Flower: petals 0. Staminate flower: calyx < 1 mm, anthers 2(3), 2–3 mm. Pistillate flower: calyx 1–2 mm, green, ± unequally cut; style 0.5, stigma 2–3.5 mm. Fruit: 15–38 mm, 3–6(8) wide; body 12–14 mm, ± cylindric, wing flat, extending proximally as tapering margin onto distal 1/4 of fruit body; fruit pedicel tip much expanded.
2n=46,92. Canyons, streambanks, woodland; 200–1600 m. s Sierra Nevada, South Coast, Transverse Ranges, Peninsular Ranges, s East of Sierra Nevada, Mojave Desert; to southwestern Utah, Texas, northern Mexico. Many southern California specimens show introgression with Fraxinus latifolia. Mar–Apr [Online Interchange]
Unabridged synonyms: [Fraxinus pennsylvanica subsp. velutina (Torr.) G.N. Mill.; Fraxinus velutina var. coriacea (S. Watson) Rehder]
Previous taxon: Fraxinus parryi
Next taxon: Ligustrum
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 8 2014
Citation for this treatment: [Author of taxon treatment] 2012. Fraxinus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=26119, accessed on Mar 8 2014
Copyright © 2013 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.
|Bioregions in which Fraxinus velutina occurs|| 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
|View elevation by latitude chart|| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
CCH collections by month