Overview

Distribution

Localities documented in Tropicos sources

Aster bigelovii A. Gray:
Mexico (Mesoamerica)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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Localities documented in Tropicos sources

Machaeranthera tephrodes (A. Gray) Greene:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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National Distribution

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Global Range: UT (Garfield, Kane, Iron, and Washington counties), CO, NM (12 counties), and AZ.

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Physical Description

Morphology

Description

Biennials or short-lived perennials. Stems, branches, and peduncles sometimes puberulent or canescent, stipitate-glandular. Leaf blades lanceolate to oblanceolate (linear to linear-oblanceolate in var. mucronata), mid 20–80 × (2–)5–15 mm, margins entire to irregularly dentate or serrate, faces glabrous or puberulent, often sparsely stipitate-glandular; distal bases usually cordate to auriculate, clasping. Involucres broadly turbinate to hemispheric. Phyllaries in 5–10 series, spreading to reflexed, apices long-acuminate, 2–6 mm, herbaceous (acute to acuminate, 1–3 mm in var. commixta), faces stipitate-glandular. Receptacles 4–9 mm diam. Ray florets pistillate, fertile; laminae blue to purple, 10–25 × 1–2 mm. Disc corollas 5–7(–8) mm. Cypselae sparsely appressed-hairy.
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Diagnostic Description

Synonym

Aster bigelovii A. Gray in War Department [U.S.], Pacif. Railr. Rep. 4(5): 97. 1857; Machaeranthera bigelovii (A. Gray) Greene
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Type Information

Isosyntype for Machaeranthera varians Greene
Catalog Number: US 369948
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): C. F. Baker
Year Collected: 1899
Locality: Pagosa Peak., Mineral, Colorado, United States, North America
  • Isosyntype: Greene, E. L. 1899. Pittonia. 4: 98.
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Ecology

Habitat

Comments: Mountain brush, aspen, spruce-fir, and alpine meadow communities at 2440-3355 m. Ponderosa pine, pinyon juniper, montaine meadows 7000-9000 feet.

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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: G4 - Apparently Secure

Reasons: Occurs in UT, CO, NM, AZ.

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