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Montana Field Guide

Montana Field Guides

White-stemmed globemallow - Sphaeralcea munroana

Potential Species of Concern

Global Rank: G4
State Rank: S3S4
* (see State Rank Reason below)

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

External Links






State Rank Reason (see State Rank above)
Peripheral in southwest Montana where it is known from a few locations. Additional survey and monitoring data are needed. Most documented locations are along roads and 2-tracks, as such, at least several of the populations may be adventive or introduced. Species appears to be tolerant of or perhaps benefits from some disturbance activity. Additional information concerning the conservation needs and population dynamics of this species in Montana is needed to clarify its status.
  • Details on Status Ranking and Review
    White-stemmed globemallow (Sphaeralcea munroana) Conservation Status Review
    Review Date = 05/29/2012
    View State Conservation Rank Criteria
    Population Size

    Score3 - Vey Small: Generally <2,000 individuals.

    CommentA few hundred plants reported at the documented locations.

    Range Extent

    Score2 - Regional or State Endemic or Small Montana Range: Generally restricted to an area <100,000 sq. miles (equivalent to 2/3 the size of Montana or less) or Montana contributes 50% or more of the species’ range or populations OR limited to 2-3 Sub-basins in Montana.

    Area of Occupancy

    Score2 - Low: Generally occurring in 4-10 Subwatersheds (6th Code HUC’s).

    Environmental Specificity

    Score0-1 - Low to Moderate.

    CommentThe majority of documented occurrences are from roadsides or along 2-tracks.

    Trends

    ScoreNA - Rank factor not assessed.

    CommentTrends are unknown, though habitat is generally stable. Some populations may be adventive, establishing along roads.

    Threats

    Score0-1 - Low to Medium.

    CommentThreats to the species' viability appear to be minor.

    Intrinsic Vulnerability

    Score0-1 - Low to Moderate Vulnerability.

    Raw Conservation Status Score

    Score 7 to 10 total points scored out of a possible 16 (Rarity factors and threats only).

 
General Description
White-stemmed Globe-mallow is a perennial herb with several stems that are 2-8 dm high and arising from a thick, branched taproot. The alternate, petiolate leaves have spade-shaped blades that are 2-6 cm long with shallowly lobed and coarsely toothed margins. The foliage is covered with short, grayish hairs. 1 to a few short-stalked flowers are borne in clusters in a terminal, leafy, spike-like inflorescence. Each of the orange to reddish flowers has a 5-lobed, hairy calyx and 5 separate, oblong, shallowly bilobed petals that are 1-2 cm long. Numerous stamens are united into a tube surrounding the style. The numerous stigmas are globose. The fruit is a flattened-globose capsule with many sections that are ca. 3 mm long; it has the appearance of a peeled orange.

Phenology
Flowering in June-July.

Diagnostic Characteristics
The more common Sphaeralcea coccinea is generally shorter with deeply cleft leaf blades. Sidalcea oregana has pink flowers and linear stigmas.

Species Range
Present
 


Range Comments
WA to sw. MT, south to WY, UT, NV, and CA. Peripheral.

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
Open, often calcareous soil of sagebrush- grasslands in the valley and foothill zones.

Ecological Systems Associated with this Species

References
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Culver, D.R. 1993. Sensitive plant species inventory in the Centennial Valley, Beaverhead County, Montana. Unpublished report to the Butte District, Bureau of Land Management. Montana Natural Heritage Program, Helena, 42 pp. plus appendices.
    • Lesica, P. and J. Vanderhorst. 1995. Sensitive plant survey of the Sage Creek area, Beaverhead County, Montana. Unpublished report to the Bureau of Land Management. Montana Natural Heritage Program. 36 pp. plus appendices.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
White-stemmed globemallow — Sphaeralcea munroana.  Montana Field Guide.  .  Retrieved on , from