Jepson Herbarium
		University of California, Berkeley

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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 |

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

Perennial, generally prostrate, soft-hairy to woolly, hairs simple.
Leaf: opposite; petioled; blade linear or lanceolate to spoon-shaped or ovate, margins entire.
Inflorescence: axillary, sessile, few-flowered heads; bracts, bractlets membranous, white, glabrous, persistent.
Flower: bisexual; perianth bell-shaped, perianth parts 5, fused ± 1/2, 1-veined; stamens 5, filaments fused basally into tube attached to top of perianth tube, anthers 2-chambered, pseudostaminodes 0; ovary ovoid, ovule 1, style 1, ± 0.2 mm, stigmas 2-lobed, spheric.
Fruit: utricle, wall membranous.
Seed: 1 lenticular to spheric, smooth, shiny.
± 5 species: s US to South America. (Antoine Guillemin, French botanist, explorer, 1796–1842) [Henrickson 1987 Sida 12:307–337]

Previous taxon: Amaranthus watsonii
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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. View all CCH records