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Micromonolepis pusilla

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: MicromonolepisView Description 

Species In Genus: 1 sp.: western United States. Etymology: (Greek: small Monolepis)
eFlora Treatment Author: Bruce G. Baldwin, adapted from Holmgren (2003)

Micromonolepis pusilla (Torr. ex S. Watson) Ulbr.
Habit: Annual 4--14(20) cm, rounded, +- red, +- powdery, glabrous in age. Stem: 1--5 from base, +- intricately branched throughout, ultimate branches thread-like. Leaf: 3--6 mm, elliptic to +- oblong, entire or hastate, tip obtuse to rounded. Inflorescence: axillary or terminal; clusters 2--3-flowered, or flower 1. Flower: sepals 1--3, oblanceolate. Staminate Flower: stamens 1--2. Pistillate Flower: style 1, stigmas 2. Fruit: 0.5--1 mm, +- flattened; wall minutely tubercled, +- free from seed. Seed: vertical, lenticular, smooth, dark brown.
Ecology: Alkali flats; Elevation: 1000--2100 m. Bioregional Distribution: n SNH (e slope), MP, n SNE; Distribution Outside California: to Washington, Colorado. Flowering Time: May--Aug
Synonyms: Monolepis pusilla Torr. ex S. Watson
eFlora Treatment Author: Bruce G. Baldwin, adapted from Holmgren (2003)
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

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botanical illustration including Micromonolepis pusilla


Citation for this treatment: Bruce G. Baldwin, adapted from Holmgren (2003) 2016. Micromonolepis pusilla, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 30, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 30, 2016.

Micromonolepis pusilla
click for enlargement
© 2007 Steve Matson
Micromonolepis pusilla
click for enlargement
© 2007 Steve Matson
Micromonolepis pusilla
click for enlargement
© 2011 Steve Matson
Micromonolepis pusilla
click for enlargement
© 2011 Steve Matson
Micromonolepis pusilla
click for enlargement
© 2007 Steve Matson

More photos of Micromonolepis pusilla in CalPhotos

Geographic subdivisions for Micromonolepis pusilla:
n SNH (e slope), MP, n SNE;
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.