Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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CHENOPODIACEAE

GOOSEFOOT FAMILY

Dieter H. Wilken, except as specified

Annual to tree, sometimes monoecious or dioecious, glandular or with bead-like hairs that collapse with age, becoming scaly or powdery
Stem often fleshy
Leaves generally alternate, entire to lobed; veins generally pinnate
Inflorescence: raceme, spike, catkin-like, or spheric cluster, or flower 1; bracts 0–few
Flower: sepals 1–5, often 0 in pistillate flowers, free or fused, generally persistent in fruit; petals 0; stamens 0–5; ovary generally superior, chamber 1, ovule 1, styles 1–3
Fruit: generally utricle
Seed 1, vertical (fruit compressed side-to-side) or horizontal (fruit compressed top-to-bottom)
Genera in family: 100 genera, 1300 species: worldwide, especially deserts, saline or alkaline soils; some cultivated for food (Beta , beets, chard; Chenopodium , quinoa)
Recent taxonomic note: Recently treated in expanded Amaranthaceae

ATRIPLEX

SALTBUSH

Dean Taylor and Dieter H. Wilken

Annual (generally monoecious) to shrub (generally dioecious), often scaly
Leaves generally alternate, generally entire; lower generally ± short-petioled; upper generally sessile, ± reduced
Staminate inflorescence: spike or spheric cluster; bracts 0
Pistillate inflorescence: clusters to spike- or panicle-like; bracts 2 per fruit, free to fused, generally compressed, generally sessile
Staminate flower: calyx lobes 3–5; stamens 3–5
Pistillate flower: calyx ± 0; ovary ovoid to spheric, style branches 2
Seed generally erect
Species in genus: ± 250 species: temp to subtropical worldwide
Etymology: (Latin: ancient name)
Generally in alkaline or saline soils; some weedy; some accumulate selenium.

Native

A. phyllostegia (Torr.) S. Watson

ARROWSCALE

Annual 1–4 dm
Stems much-branched from base, faintly striate, green, glabrous to sparsely fine-scaly
Leaf: blades 10–40 mm, lanceolate to deltate, fleshy, brittle, base tapered to hastate
Pistillate inflorescence: bracts in fruit 5–20 mm, fused at base, lanceolate to triangular, smooth or tubercled, base often ± hastate
Seed ± 1 mm, brown
Chromosomes: n=9
Ecology: Saline soils, meadows, flats
Elevation: < 1500 m.
Bioregional distribution: San Joaquin Valley, East of Sierra Nevada, Mojave Desert
Distribution outside California: to Oregon, Utah
Flowering time: Apr–Aug

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