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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Annual, perennial herb [to shrub, soft-wooded tree], hairs stinging and not [ glabrous]; monoecious or dioecious; wind-pollinated.
Leaf: alternate or opposite, generally stipuled, petioled, blade often with translucent, raised dots due to crystals in epidermal cells.
Inflorescence: axillary, 1-flowered or head-, raceme-, or panicle-like.
Flower: generally unisexual, small, ± green; sepals generally 4–5, free to fused; petals 0.
Staminate flower: stamens generally 4–5, opposite sepals, incurved in bud, reflexing suddenly when flower opens.
Pistillate flower: ovary 1, superior, chamber 1, style 0–1, stigma 1, generally hair-tufted.
Fruit: generally achene.
50 genera, 700 species: worldwide; some cultivated (Boehmeria, ramie; Pilea, clearweed). [Boufford 1997 FNANM 3:400–413] —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Miller 1971 J Arnold Arbor 52:40–68]
Key to Urticaceae
Annual, perennial herb [to shrub], weak, stinging hairs 0 or few to many; monoecious or dioecious.Key to Urtica
Stem: branched or not, erect, spreading, or decumbent.
Leaf: opposite, lanceolate to cordate, toothed, prominently 3–5-veined from base; crystals round to elongate.
Inflorescence: head-, raceme-, or panicle-like.
Staminate flower: sepals 4, ± free, green, sharp-bristly; stamens 4.
Pistillate flower: sepals 4, ± free, outer 2 < inner 2.
Fruit: lenticular to deltate, enclosed by 2 inner sepals.
± 45 species: especially temperate. (Latin: to burn, from stinging hairs)
Unabridged references: [Woodland 1982 Syst Bot 7:282–290]
Annual 1–6(8) dm, from slender taproot, monoecious; non-stinging hairs 0 to moderate.
Stem: simple or branched, erect.
Leaf: blade 18–40(90) mm, elliptic to broad- elliptic, base wedge-shaped, margins coarse- serrate, tip acute.
Inflorescence: generally head- or spike-like, 5–25 mm, often < petiole, of staminate and pistillate flowers.
Fruit: 1.5–2.5 mm, deltate.
2n=24,26,52. Disturbed areas, stream banks, shaded areas in grassland, oak woodland, chaparral, coastal-sage scrub, riparian woodland; < 1000 m. North Coast, Outer North Coast Ranges, n&s Sierra Nevada Foothills, Tehachapi Mountain Area, Great Central Valley, Central Western California, Southwestern California, w Sonoran Desert (Coachella Valley), reported from Modoc Plateau;
Previous taxon: Urtica dioica subsp. holosericea
Next taxon: Valerianaceae
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].
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|Bioregions in which taxon occurs||Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon;|
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 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.
|Map made in collaboration with Scott Loarie. Data provided by the participants of the Consortium of California Herbaria.
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