Overview

Distribution

National Distribution

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Global Range: UT: San Juan county. WY south to NM and AZ.

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Physical Description

Morphology

Description

Perennials, (20–)40–80(–120) cm (caudices fibrous-rooted). Herbage usually floccose-tomentose to glabrescent, sometimes glabrous. Stems single or loosely clustered. Leaves progressively reduced distally; petiolate (proximal); blades ovate to lanceolate, 7–15 × (1–)2–5 cm, bases contracted or tapered, margins subentire or serrate to dentate (mid and distal leaves similar, sessile, bractlike, often clasping). Heads nodding (especially when young), (1–)3–12(–20) in racemiform or paniculiform arrays (terminal heads often largest). Calyculi of 4–10 linear bractlets (lengths mostly 1 / 3 – 1 / 2 phyllaries, sometimes 1 or 2 equaling phyllaries). Phyllaries ± 13 or ± 21, 6–12 mm, tips green. Ray florets 0. Cypselae glabrous. 2n = 40.
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Diagnostic Description

Synonym

Ligularia bigelovii (A. Gray) W. A. Weber
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Type Information

Type collection for Senecio bigelovii A. Gray
Catalog Number: US 47597
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): J. M. Bigelow
Year Collected: 1853
Locality: Camp Douglas., New Mexico, United States, North America
  • Type collection: Gray, A. 1856. Rep. Explor. Railroad Pacific. 4: 111.
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Ecology

Habitat

Comments: Mountain brush, ponderosa pine, aspen, and spruce-fir communities at 2745-3175 m.

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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

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Notes

Comments

The two varieties of Senecio bigelovii are distinguished by morphologic tendencies and by geography.
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