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| Jepson eFlora: Taxon page
Key to families | Table of families and genera |
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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 | |
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Shrub, tree; monoecious.
Leaf: odd-(even-)1- pinnate, alternate, deciduous; stipules 0.
Inflorescence: catkin, generally appearing before leaves, 1 or clustered; flowers generally 1 in bract axils.
Staminate inflorescence: pendent, elongate, many-flowered, on last yr's twigs.
Pistillate inflorescence: erect; flowers 1–many, at tip of new twigs.
Staminate flower: calyx [0 or] lobes generally 4 [2, 6]; petals 0; stamens 3–40[50]; pistil 0 or vestigial.
Pistillate flower: calyx [0] or lobes 4; petals 0; stamens 0; ovary 1, inferior, chamber 1 above, generally 2 below, styles 2, plumose.
Fruit: nut enclosed in husk or winged nutlets.
9 genera, > 60 species: n temperate, subtropical mountains; some ornamental, cultivated for wood, nuts (Carya hickory, pecan; Juglans walnut). [Stone 1997 FNANM 3:416–428] In Carya, Juglans, husk included in fruit diam, even though derived from involucre, calyx, and therefore not technically part of fruit. —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Elias 1972 J Arnold Arbor 53: 26–51]
Stem: Bark shallowly furrowed in age, gray; twig centers chambered; buds naked [scaly].
Pistillate inflorescence: flowers 15–50; in fruit pendent.
Pistillate flower: styles short.
Fruit: 15–50 2-winged nutlets, not enclosed in husk.
6 species: temperate Asia. (Greek: winged nut)
Previous taxon: Juglans regia
Next taxon: Pterocarya stenoptera
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
Copyright © 2012 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 taxon 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. |
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Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates. | Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
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