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Montana Field Guide

Montana Field Guides

Small-flowered Marsh-elder - Iva axillaris


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 3

External Links






 
General Description
Rhizomatous perennial. Stems erect, usually branched, 10–40 cm. Herbage strigose, sparsely to densely glandular. Leaves short-petiolate; blades oblanceolate to obovate, entire, 5–50 mm long. Inflorescence of solitary pedunculate heads in axils of reduced upper leaves. Involucres 2–4 mm high; phyllaries 5 to 8, obovate, ciliate, strigose. Female flowers ca. 5; corolla ca. 1 mm long. Male flowers 4 to 20, obconic; corolla 2–3 mm long. Achenes 2–3 mm long, gland-dotted (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC to WI, south to CA, AZ, NM and TX (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 77

(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
Gravelly or fine-textured soil of grasslands, stream terraces; 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:
Small-flowered Marsh-elder — Iva axillaris.  Montana Field Guide.  .  Retrieved on , from