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Montana Field Guide

Montana Field Guides

Jagged Chickweed - Holosteum umbellatum

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 0

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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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Unknown/Undetermined
 


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

Summary of Observations Submitted for Montana
Number of Observations: 1

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

References
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Citation for data on this website:
Jagged Chickweed — Holosteum umbellatum.  Montana Field Guide.  .  Retrieved on , from