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Montana Field Guide

Montana Field Guides

Spreading Dogbane - Apocynum androsaemifolium

Native Species

Global Rank: G5
State Rank: S5
* (see State Rank Reason below)

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

External Links






State Rank Reason (see State Rank above)
A very common species throughout most of the state. Common in disturbed as well as pristine habitat.
  • Details on Status Ranking and Review
    Spreading Dogbane (Apocynum androsaemifolium) Conservation Status Review
    Review Date =
 
General Description
Stems ascending to erect, 25–100 cm, usually branched. Herbage glabrous to pubescent. Leaves drooping; blades ovate to lance-ovate, mucronate, 2–10 cm long, lighter beneath. Inflorescence axillary and terminal cymes. Flowers tubular to campanulate; calyx 2–3 mm long; corolla white with pink lines, tube 3–5 mm long, lobes 2–3 mm long. Follicles pendulous or ascending, 5–13 cm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

In Montana we have varieties androsaemifolium and pumilum A.Gray.

Species Range
Present
 


Range Comments
Throughout most of North America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 152

(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
Forest openings, meadows, roadsides; 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:
Spreading Dogbane — Apocynum androsaemifolium.  Montana Field Guide.  .  Retrieved on , from