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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 subshrub; monoecious and/or dioecious; occasionally spiny; hairs simple (branched).
Leaf: blade simple, alternate or opposite, margins entire or serrate; veins pinnate; stipules 0.
Inflorescence: axillary or terminal; 3-flowered cymes in dense spikes, heads or panicles; bracts 0 or 1–5, persistent; bractlets 0–2.
Flower: bisexual or unisexual, small, green (± white), yellow or purple; perianth parts 0 or (1)3–5, free or fused basally, scarious or hardened, persistent; stamens 1–5, opposite perianth parts, free or basally fused as a tube, generally unequal, occasionally alternate with appendages on stamen tubes (pseudostaminodes), anthers 2- or 4-chambered; ovary superior, chamber 1; ovule 1 (2–many); style (0)1–3, stigmas 1–3(5).
Fruit: utricle; generally with persistent perianth or bracts.
Seed: 1 [2+], small, lenticular to spheric, smooth or dotted to striate or tubercled.
± 75 genera, 900 species: cosmopolitan, especially disturbed, arid, saline or alkaline soils; some cultivated for food, ornamental; many naturalized, ruderal or agricultural weeds. [Müller & Borsch 2005 Ann Missouri Bot Gard 92:66–102] Amaranthaceae including Chenopodiaceae by some. Polycnemoideae, represented in CA by Nitrophila, formerly considered subfamily of Chenopodiaceae, but needs further research. Guilleminea densa (Willd.) Moq. var. aggregata Uline & W.L. Bray is a waif. Froelichia gracilis (Hook.) Moq. is an historical waif. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.
Unabridged references: [Kadereit et al. 2003 Int J Plant Sci 164:959–986; Robertson 1981 J Arnold Arbor 62:267–313]
Key to Amaranthaceae
Annual or subshrub, canescent to densely woolly, or glabrous in age; hairs forked.Key to Tidestromia
Leaf: generally opposite, occasionally alternate at base, sessile or short-petioled, petiole <= 2.5 mm; blade round to lanceolate, cordate, base wedge-shaped or oblique, tip acute to obtuse, margins entire, papery to fleshy.
Inflorescence: axillary head-like cymes, flowers 1–3(5), sessile, ± enclosed by 2 ± opposite leaves hardened and fused in age; bracts, bractlets persistent, ovate, scarious, woolly.
Flower: bisexual; perianth parts 5, free, keeled, outer 3 > inner 2, scarious or leathery, glabrous or woolly, tip acute or obtuse; stamens 5, filaments fused at base into short tube, anthers 2-chambered, pseudostaminodes 0 or short, triangular, ± 0.2 mm; ovary ± spheric, ovule 1, style 0 or short, ± 0.1 mm, stigmas 2-lobed, deltoid (irregularly 3-lobed).
Fruit: ± spheric, wall membranous.
Seed: obovoid, brown-red.
7 species: w North America, West Indies, deserts. (Ivar T. Tidestrom, Swedish-born botanist of sw USA, 1864–1956)
Stem: 10–50 cm, prostrate to ascending; canescent to woolly, occasionally glabrous in age.
Leaf: 6–32 mm, 9–30 mm wide, gray-green.
Inflorescence: 1–3-flowered; involucre leaf blades 3–40 mm, 2–31 mm wide, ovate, obovate, lanceolate, papery to fleshy; bracts 1–1.5 mm, 0.8–1 mm wide; bractlets 1–1.5 mm, 0.6–0.8 mm wide, tip obtuse.
Flower: perianth 1.5–2.8 mm, ± yellow; staminal tube (0.3)0.5–1 mm, filaments 0.5–1.5 mm.
Fruit: 1.3–1.5 mm.
Seed: 1–1.4 mm.
Slopes, gravelly to sandy soils; ± 1200 m. e Desert Mountains (Granite Mtns);
Previous taxon: Tidestromia
Next taxon: Tidestromia suffruticosa var. oblongifolia
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 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.
|Map made in collaboration with Scott Loarie. Data provided by the participants of the Consortium of California Herbaria.
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