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Montana Field Guide

Montana Field Guides

Jagged Chickweed - Holosteum umbellatum

Non-native Species

Global Rank: GNR
State Rank: SNA
C-value: 0

Agency Status


External Links

General Description
Taprooted, glandular-pubescent annual. Stems erect, usually unbranched, 3–20 cm. Leaves lanceolate, 1-veined, 2–20 mm long, petiolate in the basal rosette, sessile and few above. Inflorescence a terminal, bracteate umbel of few to several flowers, the pedicels 5–20 mm long, reflexed immediately after flowering but erect in fruit. Flowers: sepals separate, lanceolate, nearly glabrous, 2–4 mm long with scarious margins; petals white, clawed, 3–5 mm long with dentate-margined tips; stamens 3 to 5; styles 3. Capsule narrowly ovoid, 4–6 mm long, opening by 6 teeth (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions


Range Comments
Throughout temperate North America (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 52

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



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

Vernally moist soil of grasslands, wetland margins; valleys. (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).


  • 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?
    • Cope, M.G. 1992. Distribution, habitat selection and survival of transplanted Columbian Sharp-tailed Grouse (Tympanuchus phasianellus columbianus) in the Tobacco Valley, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 60 p.
    • Harvey, A.J. 2019. Understanding the biology, ecology, and integrated management of Ventenata dubia. M.Sc. Thesis. Bozeman, MT: Montana State University. 117 p.
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Citation for data on this website:
Jagged Chickweed — Holosteum umbellatum.  Montana Field Guide.  .  Retrieved on , from