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Vascular Plants of California
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Atriplex polycarpa
ALLSCALE SALTBUSH


Higher Taxonomy
Family: ChenopodiaceaeView DescriptionDichotomous Key
Common Name: GOOSEFOOT FAMILY
Habit: Annual to shrub; hairs simple, stellate, or glandular; plants in several genera scaly, mealy, or powdery from collapsed glands; monoecious, dioecious, with bisexual flowers, or with both bisexual and unisexual flowers. Stem: occasionally fleshy. Leaf: blade simple, generally alternate, occasionally fleshy or reduced to scales, veins pinnate; stipules 0. Inflorescence: raceme, spike, catkin-like, spheric head, axillary clusters of flowers, or flowers 1; bracts 0--5, herbaceous, generally persistent or strongly modified in fruit, wings, tubercles or spines present or 0. Flower: bisexual or unisexual, small, generally green; calyx parts (1)3--5, or 0 in pistillate flowers, free or fused basally (or +- throughout), leaf-like in texture, membranous, or fleshy, deciduous or not, often strongly modified in fruit; corolla 0; stamens 1--5, opposite sepals, filaments free, equal; anthers 4-chambered; ovary superior (1/2-inferior), chamber 1; ovule 1; styles, stigmas 1--4 (or stigmas sessile). Fruit: achene or utricle, generally falling with persistent calyx or bracts. Seed: 1, small, lenticular to spheric; seed coat smooth to finely dotted, warty, net-like, or prickly, margin occasionally winged.
Genera In Family: 100 genera, 1500 species: worldwide, especially deserts, saline or alkaline soils; some cultivated for food (Beta vulgaris subsp. vulgaris, beet, Swiss chard; Spinacia oleracea L., spinach; Chenopodium quinoa Willd., quinoa); and some worldwide, naturalized ruderal or noxious agricultural weeds. Note: Nitrophila treated in Amaranthaceae, Sarcobatus treated in Sarcobataceae. Key to genera revised by Elizabeth H. Zacharias to incorporate Extriplex and Stutzia, 2 genera segregated from Atriplex.
eFlora Treatment Author: Mihai Costea, family description, key to genera, revised by Thomas J. Rosatti & Elizabeth H. Zacharias, except as noted
Scientific Editor: Bruce G. Baldwin, David J. Keil, Thomas J. Rosatti.
Genus: AtriplexView DescriptionDichotomous Key


Common Name: SALTBUSH, ORACH
Habit: Generally monoecious annual, to generally dioecious shrub, generally scaly. Leaf: generally alternate, distal +- reduced; blade entire to variously dentate; anatomy Kranz or non-Kranz (see note). Inflorescence: axillary or terminal. Staminate Inflorescence: spheric cluster to spike-like or panicle; bracts 0. Pistillate Inflorescence: cluster to spike- or panicle-like, occasionally 1; bracts 2 per fruit, enlarged in age, free to variously fused, generally compressed, generally sessile, falling with fruit (or not). Staminate Flower: calyx lobes 3--5; stamens 3--5. Pistillate Flower: calyx generally +- 0; stigmas 2. Seed: generally erect.
Species In Genus: +- 250 species: temperate to subtropics worldwide. Etymology: (Latin: name derived from Greek) Note: Generally in alkaline or saline soils; some weedy; some accumulate selenium. Bract descriptions refer to 2 bracts surrounding flower, enlarging in fruit. Australian Atriplex crassipes J.M. Black possibly in SCo. In this revised taxonomy, Atriplex californica, Atriplex joaquinana moved to Extriplex, Atriplex covillei to Stutzia, both new genera [Zacharias & Baldwin 2010 Syst Bot 35(4):839--857]. Kranz anatomy (observable at 10 ×, sometimes only after scraping off scaly, mealy, or powdery layer) characterized by veins that are darker green than rest of leaf, due to higher concentrations of chloroplasts in bundle-sheath cells surrounding veins.
eFlora Treatment Author: Elizabeth H. Zacharias
Reference: Welsh 2003 FNANM 4:322--381
Atriplex polycarpa (Torr.) S. Watson
NATIVE
Habit: Shrub, erect, 5--20 dm, densely gray-scaly. Stem: branches many, spreading to ascending; twigs slender, +- spine-like in age. Leaf: generally +- sessile, blade 3--25 mm, oblong to narrowly oblanceolate, +- thick; Kranz. Pistillate Inflorescence: occasionally terminal; bracts in fruit 2--3 mm, fused proximally, +- spheric, minutely crenate to dentate, smooth to tubercled. Seed: 1--1.5 mm, light brown. Chromosomes: 2n=18,36,72.
Ecology: Alkaline flats, dry lakes; Elevation: < 1500 m. Bioregional Distribution: SnJV and margins, n TR, e PR, s SNE, D; Distribution Outside California: to Utah, northern Mexico. Flowering Time: Jul--Oct
Unabridged Synonyms: Atriplex curvidens Brandegee; Obione polycarpa Torr.
Unabridged Note: May hybridize with Atriplex canescens, Atriplex lentiformis. Riefner & Boyd (J BRIT 1:724 2007) report this from western PR in Riverside Co.
Jepson eFlora Author: Elizabeth H. Zacharias
Reference: Welsh 2003 FNANM 4:322--381
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Citation for this treatment: Elizabeth H. Zacharias 2013, Atriplex polycarpa, in Jepson Flora Project (eds.) Jepson eFlora, Revision 1, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=15258, accessed on November 12, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on November 12, 2019.

Atriplex polycarpa
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© 2016 Keir Morse
Atriplex polycarpa
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© 2012 Gary A. Monroe
Atriplex polycarpa
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© 2009 Neal Kramer
Atriplex polycarpa
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© 2015 Steve Matson
Atriplex polycarpa
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© 2015 Steve Matson
Atriplex polycarpa
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© 2011 Neal Kramer

More photos of Atriplex polycarpa in CalPhotos



Geographic subdivisions for Atriplex polycarpa:
SnJV and margins, n TR, e PR, s SNE, D
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).





 

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Data provided by the participants of the  Consortium of California Herbaria.
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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.