Search Field Guide
Advanced Search
Montana Field Guide

Montana Field Guides

Maximillian Sunflower - Helianthus maximiliani


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

External Links






 
General Description
Rhizomatous perennial with thickened roots. Stems erect, usually simple, 45–200 cm. Herbage hispid-strigose, glandular. Leaves alternate; blades entire, narrowly lanceolate, acuminate, 7–15 cm long. Involucres 12–25 mm across; phyllaries lanceolate, long-acuminate, strigose, glandular, ciliate, 6–15 mm long. Ray ligules 10–25 mm long. Disk corollas 5–7 mm long. Achenes 3–4 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Throughout most of U.S., southern Canada and Mexico (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 14

(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 to wet meadows, thickets, often along streams, ponds; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
Login Logout
Citation for data on this website:
Maximillian Sunflower — Helianthus maximiliani.  Montana Field Guide.  .  Retrieved on , from