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Montana Field Guide

Montana Field Guides

Pineapple-weed Chamomile - Matricaria discoidea
Other Names:  Matricaria matricarioides

Exotic Species (not native to Montana)

Global Rank: G5
State Rank: SNA

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

External Links






 
General Description
Stems erect, often branched, 4–30 cm. Herbage pinapple-scented. Leaves 1–5 cm long, 1–3 times divided into crowded, short, linear-lanceolate segments. Heads discoid; involucre 2-5 mm high; phyllaries lanceolate to ovate. Disk flowers 1–1.5 mm long. Pappus absent (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Introduced throughout N. America, native to the Pacific Northwest and Asia (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 9

(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
Disturbed, often compacted soil of roadsides, fields, gardens; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Pineapple-weed Chamomile — Matricaria discoidea.  Montana Field Guide.  .  Retrieved on , from