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Montana Field Guide

Montana Field Guides

Great Starthistle - Centaurea scabiosa

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 1

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General Description
Perennial. Stems erect, branched, 30–100 cm. Herbage glabrate. Leaves petiolate; blades lanceolate to ovate, 5–25 cm long, pinnately lobed, more deeply so above. Inflorescence with few heads. Involucres broadly campanulate, 12–25 mm high; phyllaries green with dark, scarious, pectinately branched appendages at the tip; the outer ovate; inner oblanceolate. Disk flowers numerous, rose-purple; the outer enlarged; inner corollas 20–25 mm long. Achenes 4–5 mm long, puberulent; pappus of numerous bristles (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Collected in Missoula and Lewis & Clark counties. Introduced in western and northeast U.S. and Canada (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat

References
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Citation for data on this website:
Great Starthistle — Centaurea scabiosa.  Montana Field Guide.  .  Retrieved on , from