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Montana Field Guide

Montana Field Guides

Mojave Brickellbush - Brickellia oblongifolia

Species of Concern

Global Rank: G5
State Rank: S1S2
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank: 1
C-value:

External Links






State Rank Reason (see State Rank above)
Few collections known for Montana. Only known extant occurrences are all near Melrose. The current status of one historical occurrence near Wilsall is unknown.

Invasive weeds do not apear to be a threat at this time and the rocky, sparsely-vegetated slopes that the species occupies are not generally subject to human impacts. Livestock grazing may be negatively impacting the species at one site. Updated population and site data are needed for the known occurrences. Other occurrences of the species are likely to be found in Montana.
 
General Description
Glandular-puberulent herb or subshrub, 1-6 dm tall, generally with many stems from near the base. Leaves all cauline, mostly sessile, alternate or occasionally opposite to subopposite, entire or nearly so, lance-linear to oblong or elliptic, 1-4 cm long and up to 15 mm wide. Leaves mostly 2-8 times as long as wide. Heads terminating the branches or subcorymbosely clustered and relatively large. The involucres 10-20 mm high with acute to acuminate bracts. Flowers ochroleucous, numerous with about 40-50 flowers in each head. Achenes 4.5-6 mm long.

Diagnostic Characteristics
Similar to Brickellia grandiflora, which differs in having broad, toothed leaves. B. eupatorioides closely resembles B. oblongifolia, but has toothed leaves and feathery (plumose) pappus bristles on the top of the fruit. Only the typic variety of B. oblongifolia is known in Montana.

Species Range
Present
 


Range Comments
BC south to CA, AZ and NM (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
Grows on rock outcrops, talus and scree, and on dry, sparsely-vegetated, southerly slopes.

Ecological Systems Associated with this Species

References
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Citation for data on this website:
Mojave Brickellbush — Brickellia oblongifolia.  Montana Field Guide.  .  Retrieved on , from