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Vascular Plants of California
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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, except as noted
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)
Reference: Holmgren 2003 FNANM 4:301--302
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;
Jepson eFlora Author: Bruce G. Baldwin, adapted from Holmgren (2003)
Reference: Holmgren 2003 FNANM 4:301--302
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Listed on CNPS Rare Plant Inventory

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Botanical illustration including Micromonolepis pusilla

botanical illustration including Micromonolepis pusilla


Citation for this treatment: Bruce G. Baldwin, adapted from Holmgren (2003) 2012, Micromonolepis pusilla, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on December 12, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on December 12, 2018.

Micromonolepis pusilla
click for enlargement
© 2011 Steve Matson
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
© 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. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.