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Montana Field Guide

Montana Field Guides

Great Northern Aster - Canadanthus modestus
Other Names:  Aster modestus


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

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General Description
Rhizomatous perennial. Stems erect, 30–80 cm. Herbage glandular-puberulent. Leaves cauline, sessile, lanceolate, weakly serrate to entire, 4–10 cm long, clasping above, the lowest deciduous. Inflorescence leafy-corymbiform, often short with few heads; peduncles stipitate-glandular. Heads radiate; involucre narrowly campanulate, 6–10 mm high; phyllaries subequal, linear-lanceolate, glandular, green or purplish; the outer foliaceous. Ray flowers female, 20 to 65, purple; ligules 7–12 mm long. Disk flowers 40 to 65, perfect, whitish to purplish; corolla 5–7 mm long; style branches deltoid. Pappus of numerous capillary bristles, brownish. Achenes fusiform, 4- to 9-nerved, 2–4 mm long, sparsely strigose (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Unknown/Undetermined
 


Range Comments
AK to ON south to OR, MT and MN (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
Moist meadows, thickets, open forests, especially along streams, wetlands; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Great Northern Aster — Canadanthus modestus.  Montana Field Guide.  .  Retrieved on , from