Montana Field Guide

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- Kingdom - Plants - Plantae
  - Division - Flowering Plants - Anthophyta
    - Class - Dicots - Dicotyledoneae
      - Order - Aster/Sunflowers - Asterales
        
        Family - Aster/Sunflowers - Asteraceae
        
        Species - Oppositeleaf False Bahia - Picradeniopsis oppositifolia

Oppositeleaf False Bahia - Picradeniopsis oppositifolia

Other Names: Bahia oppositifolia

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Native Species

Global Rank: G5?
State Rank: S4
C-value: 3

Agency Status
USFWS:
USFS:
BLM:

External Links

General Description

Rhizomatous perennial. Stems erect, 10–20 cm, usually branched. Herbage with minute, sessile glands, densely strigose. Leaves cauline, petiolate, mostly opposite; blades 1–3 cm long, deeply divided into 3(to 5) linear lobes; the basal rarely entire. Inflorescence terminal with 1 to several heads. Heads radiate; involucre hemispheric, 4–6 mm high; phyllaries 5 to 10, ovate, subequal, green with hyaline margins, strigose; receptacle glabrous. Ray flowers 3 to 6, female, yellow; ligules 3–5 mm long. Disk flowers 30 to 60, perfect, orangish, glandular; corolla 2–4 mm long; throat much wider than tube. Pappus of 8 to 10 short, narrowly ovate scales. Achenes glandular, obconic, 3–5 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Montana Range Range Descriptions

Native

Range Comments

MT to ND south to AZ, NM and TX (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database

Number of Observations: 77

(Click on the following maps and charts to see full sized version) Map Help and Descriptions

Relative Density

Recency

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

Habitat

Clayey, often compacted soil of grasslands, steppe, badlands, roadsides; plains (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?
- Harvey, S.J. 1990. Responses of steppe plants to gradients of water soil texture and disturbance in Montana, U.S.A. Ph.D. Thesis. Bozeman, MT: Montana State University. 34 p.
- 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.
- Maxwell, B.D. 1984. Changes in an infested plant community after an application of picloram, the effect of glyphosate on bud dormancy, the effect of pulling and the fuel potential of leafy spurge (Euphorbia esula L.). M.Sc. Thesis. Bozeman, MT: Montana State University. 73 p.
- Peterson, J.G. 1969. The food habits and summer distribution of juvenile sage grouse in central Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 39 p.
- Seipel, T.F. 2006. Plant species diversity in the sagebrush steppe of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 87 p.
- Skinner, K.F. 1995. Plant and grasshopper community composition: indicators & interactions across three spatial scales. M.Sc. Thesis. Bozeman, MT: Montana State University. 144 p.
- Tschache, O.P. 1970. Effects of ecological changes induced by various sagebrush control techniques on small mammal populations. M.Sc. Thesis. Bozeman, MT: Montana State University. 51 p.
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Citation for data on this website:
Oppositeleaf False Bahia — Picradeniopsis oppositifolia. Montana Field Guide. Montana Natural Heritage Program. Retrieved on April 7, 2025, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=PDAST76010

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