Overview

Distribution

National Distribution

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Global Range: Known from Kaibab Plateau and from Montezuma County, Colorado and might occur in adjacent Utah (Welsh et al. 1993). Kearney and Peebles (1951) data for Myosurus egglestonii in Arizona indicates Kaibab Plateau, Grand Canyon and Leroux Spring near Flagstaff (Coconino County) and Young to Payson in northern Gila County.

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Ariz., Colo., N.Mex.
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Physical Description

Morphology

Description

Herbs , 1-1.9 cm. Leaf blades linear or very narrowly oblanceolate, 0.6-1.2 cm. Inflorescences: scape 0.5-0.9 cm. Flowers: sepals sometimes strongly veined, scarious margins narrow or broad; petal claw 3 times as long as blade. Heads of achenes 8-17 × 2-2.5 mm, exserted from leaves. Achenes: outer face orbiculate to rhombic, 0.8-1 × 0.6-0.8 mm, 1-1.3 times as high as wide, not bordered; beak 0.8-1 mm, 0.8-1.2 as long as outer face of achene, diverging (sometimes weakly) from outer face of achene, heads of achenes thus ±roughened by projecting achene beaks.
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Diagnostic Description

Synonym

Myosurus egglestonii Wooton & Standley
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Type Information

Holotype for Myosurus egglestonii Wooton & Standl.
Catalog Number: US 660739
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): W. W. Eggleston
Year Collected: 1911
Locality: Between Tierra Amarilla and Park View., Rio Arriba, New Mexico, United States, North America
Elevation (m): 2250 to 2250
  • Holotype: Wooton, E. O. & Standley, P. C. 1913. Contr. U.S. Natl. Herb. 16: 123.
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Ecology

Habitat

Comments: Moist ground, 6000-8000 feet (Martin and Hutchins 1980).

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Under sagebrush; 1800-2100m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering spring.
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G3 - Vulnerable

Reasons: Known from scattered locations in northern Arizona, northern New Mexico and southern Colorado, on moist ground.

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Names and Taxonomy

Taxonomy

Comments: Includes Myosurus egglestonii (Kartesz, 1994 checklist).

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