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Montana Field Guide

Montana Field Guides

Dwarf Sagebrush - Artemisia arbuscula ssp. arbuscula


Global Rank: G5T3T5
State Rank: S4

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

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General Description
Shrub 10–40 cm high; stems relatively rigid and ascending to erect. Herbage tomentose, sometimes with obscure resin dots beneath tomentum. Leaves cuneate, 5–25 mm long, 3-lobed distally, apex of lobes rounded. Inflorescence spiciform; bracts linear. Involucre campanulate, 3–5 mm high; phyllaries green, tomentose; receptacle glabrous. Disk flowers perfect, 4 to 8, glabrous or glandular; corolla ca. 2 mm long. Achenes resinous, <1 mm long (adapted from Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX; and Shultz, 2006, Fl. North America, Vol. 19).

Phenology
Flowering in middle to late summer.

Diagnostic Characteristics
The typical subspecies can be distinguished from subspecies longiloba by its acute apices on the lobes of the leaves, the relatively rigid and ascending to erect stems, its later flowering, and preference for coarser (often stony and/or calcareous) soils.

Species Range
Present
 


Range Comments
WA to MT south to CA, AZ and CO (Kartesz 2009).

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
Rocky sedimentary soils, high valleys, mountain slopes; 1500–3800 m (Shultz, 2006, Fl. North America, Vo. 19).

References
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Citation for data on this website:
Dwarf Sagebrush — Artemisia arbuscula ssp. arbuscula.  Montana Field Guide.  .  Retrieved on , from