Overview

Distribution

National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Alta., Sask.; Calif., Idaho, Kans., Mont., Nebr., Nev., Oreg., S.Dak., Tex., Utah, Wash., Wyo.
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Physical Description

Morphology

Description

Plants annual, glabrous. Stems prostrate, whitish or tinged with red, much-branched from base, 0.1-0.5 m, rather fleshy. Leaves: petiole 1/2 or less as long as blade; blade pale green, veins prominent, obovate, spatulate, or oblanceolate to linear, 0.3-2(-3) × 0.2-1.5 cm, base cuneate, margins entire, plane or slightly undulate, apex obtuse to subacute, with prominent mucro. Inflorescences axillary clusters borne from bases to tops of plants. Bracts of pistillate flowers linear, 0.5-1 mm, ± equaling tepals. Pistillate flowers: tepals 1-3, narrowly lanceolate, unequal, usually with only 1 well-developed tepal, largest 1-1.2 mm, apex acute to acuminate; stigmas 3. Staminate flowers intermixed with pistillate; tepals (2-)3; stamens 3. Utricles subglobose, 1-1.2 mm, smooth or wrinkled (especially in dry plants), dehiscence regularly circumscissile or tardily dehiscent. Seeds very dark reddish brown, lenticular, (0.6-)0.7-1 mm diam., shiny.
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Diagnostic Description

Synonym

Mengea californica Moquin-Tandon in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 13(2): 270. 1849
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Type Information

Type collection for Amaranthus albomarginatus Uline & W.L. Bray
Catalog Number: US 63400
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Verified from the card file of type specimens
Preparation: Pressed specimen
Collector(s): E. Palmer
Year Collected: 1876
Locality: California, United States, North America
  • Type collection: Uline, E. B. & Bray, W. L. 1894. Bot. Gaz. 19: 318.
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Ecology

Habitat

Seasonally moist flats, shores of water bodies, waste places, other disturbed habitats; 0-2800m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering summer-fall.
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N1 - Critically Imperiled

United States

Rounded National Status Rank: N4 - Apparently Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

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Wikipedia

Amaranthus californicus

Amaranthus californicus is a species of flowering plant in the amaranth family known by the common name California amaranth. It is a glabrous monoecious annual that is native to most of the western United States and Canada. The plant grows from 10 to 50 centimeters tall. It is found in moist flats or near bodies of water, and blooms from summer to fall.

References[edit]

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