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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 |
Annual to shrub, tree [ vine]; monoecious or dioecious.
Stem: generally branched [ fleshy or spiny].
Leaf: generally simple, alternate or opposite, generally stipuled, petioled; blade entire, toothed, or palmately lobed.
Inflorescence: terminal or axillary panicle, raceme or spike, or (Chamaesyce, Euphorbia) a compact unit enclosed by an involucre appearing flower-like, terminal or axillary, 1 or in whorled, umbel-like, or cyme-like arrays.
Flower: unisexual, ± radial; sepals generally 3–5, free or fused; petals generally 0; stamens 1–many, free or filaments fused; ovary superior, chambers 1–4, styles free or fused, simple or lobed.
Fruit: generally capsule.
Seed: 1 per chamber; seed scar appendage sometimes present, pad- to dome-like.
218 genera, 6000+ species: ± worldwide especially tropics; some cultivated (Aleurites, tung oil; Euphorbia species; Hevea, rubber; Ricinus). Many species ± highly TOXIC. [Wurdack & Davis 2009 Amer J Bot 96:1551–1570] Eremocarpus moved to Croton. Tetracoccus moved to Picrodendraceae. —Scientific Editor: Bruce G. Baldwin.
Unabridged references: [Webster 1994 Ann Missouri Bot Gard 81:1–144]
Key to Euphorbiaceae
Perennial < 0.5 m; hairs stinging, nettle-like; monoecious.
Stem: spreading to erect, branched, sometimes twining.
Leaf: cauline, alternate; stipules persistent.
Inflorescence: raceme, terminal or opposite leaf; staminate flowers distal to pistillate flowers.
Staminate flower: sepals 4–5; stamens 3–6; nectary 0.
Pistillate flower: sepals 5[4–8]; ovary 3-chambered, styles simple, ± fused at base.
Fruit: ± spheric.
Seed: smooth or ± rough; scar not appendaged.
± 100 species: tropics, warm temperate worldwide. (Tragus, name for Hieronymus Bock, German herbalist, 1498–1554) [Miller & Webster 1967 Rhodora 69:241–305]
Stem: 1–3 dm.
Leaf: stipules 1–4.5 mm, lanceolate to ovate; petiole 2–20 mm; blade 1–2 cm, lanceolate to ovate, base truncate to ± lobed, margin coarsely, sharply toothed.
Inflorescence: 0.5–1 cm, ± spreading; pedicels 1–2 mm; staminate flowers 2–4; pistillate flower 1.
Staminate flower: sepals 4–5, ± 1 mm, recurved; stamens 3–6, filaments ± flattened.
Pistillate flower: sepals 5, 1.5–2 mm; ovary < 2 mm diam, puberulent to finely bristly, styles fused in proximal 1/3.
Fruit: 3–4 mm, 6–8 mm wide, depressed-spheric, sparsely and finely bristly.
Seed: 2.5–3.5 mm, ± spheric.
Dry, rocky slopes, scrub, pinyon/juniper woodland; 900–1900 m. Desert Mountains;
Previous taxon: Tragia
Next taxon: Triadica
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
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|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.|
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.
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