Montana Field Guide

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Montana Field Guides

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- Kingdom - Plants - Plantae
  - Division - Flowering Plants - Anthophyta
    - Class - Dicots - Dicotyledoneae
      - Order - Rosales - Rosales
        
        Family - Rose Family - Rosaceae
        
        Species - Tweedy's Ivesia - Ivesia tweedyi

Tweedy's Ivesia - Ivesia tweedyi

Status Under Review
Native Species

Global Rank: G4
State Rank: SNR
C-value:

Agency Status
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USFS:
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External Links

General Description

Stems 5–20 cm. Leaves basal and few cauline; the blade glabrous to glandular-puberulent, 3–8 cm long; leaflets obovate, deeply lobed, 4–8 mm long. Flowers: hypanthium cup-shaped, 2–3 mm long; sepals 2–4 mm long; petals barely shorter than the sepals. Fruit ca. 2 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments

Endemic to eastern WA, ID and MT. Known from Mineral County (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database

Number of Observations: 3

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Relative Density

Recency

(Observations spanning multiple months or years are excluded from time charts)

Habitat

Stony sparsely-vegetated soil of rock outcrops, grasslands; subalpine (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Stewardship Responsibility

References

Literature Cited AboveLegend: View Online Publication
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
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Citation for data on this website:
Tweedy's Ivesia — Ivesia tweedyi. Montana Field Guide. Montana Natural Heritage Program. Retrieved on November 21, 2024, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=PDROS0X0M0