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Cycloloma atriplicifolium

Higher Taxonomy
Family: ChenopodiaceaeView DescriptionDichotomous Key

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
Scientific Editor: Bruce G. Baldwin, David J. Keil, Thomas J. Rosatti.
Genus: CyclolomaView Description 


Species In Genus: 1 sp. Etymology: (Greek: circular wing, from calyx in fruit)
eFlora Treatment Author: G. Frederic Hrusa & Dieter H. Wilken

Cycloloma atriplicifolium (Spreng.) J.M. Coult.
Habit: Annual 12--75 cm, many-branched, rounded. Stem: spreading, slender, striate, finely long-shaggy-hairy to tomentose, generally glabrous in age. Leaf: gradually reduced distally on stem; petiole 0--12 mm; blade 5--65 mm, lanceolate to ovate, wavy-dentate; densely to sparsely long-shaggy-hairy, generally glabrous in age. Inflorescence: panicle-like, terminal, open in fruit; bracts 0; flowers sessile. Flower: bisexual or pistillate; calyx enclosing fruit, 2--3 mm diam in fruit, round-winged, lobes 5, +- keeled; stamens 5; ovary densely, finely tomentose, style deeply 2--3-lobed. Fruit: +- 2 mm diam. Seed: 1.5--2 mm diam, lens-shaped, long-shaggy-hairy, horizontal, dull black. Chromosomes: 2n=36.
Ecology: Fields, disturbed areas, generally sandy; Elevation: < 1250 m. Bioregional Distribution: GV, s SCo, w PR, DMoj; Distribution Outside California: Canada to northern Mexico; native to central North America. Flowering Time: May--Sep
eFlora Treatment Author: G. Frederic Hrusa & Dieter H. Wilken
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botanical illustration including Cycloloma atriplicifolium


Citation for this treatment: G. Frederic Hrusa & Dieter H. Wilken 2016. Cycloloma atriplicifolium, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 04, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 04, 2016.

Cycloloma atriplicifolium
click for enlargement
© 2005 James M. Andre
Cycloloma atriplicifolium
click for enlargement
© 2005 James M. Andre

More photos of Cycloloma atriplicifolium in CalPhotos

Geographic subdivisions for Cycloloma atriplicifolium:
GV, s SCo, w PR, DMoj;
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.
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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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.