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Montana Field Guides

White-stem stickleaf - Mentzelia albicaulis


Global Rank: G5
State Rank: S3S4
* (see State Rank Reason below)

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

External Links






State Rank Reason (see State Rank above)
Mentzelia albicaulis occurs in southwest and central Montana. Populations are scattered and occur in more counties than previously known.
  • Details on Status Ranking and Review
    White-stem stickleaf (Mentzelia albicaulis) Conservation Status Review
    Review Date = 11/14/2016
    View State Conservation Rank Criteria
    Population Size

    ScoreU - Unknown

    Range Extent

    ScoreF - 10,000 - 100,000 individuals

    Area of Occupancy

    ScoreE - 26-125 4-km2 grid cells

    Number of Populations

    ScoreC - 21 - 80

    Number of Occurrences or Percent Area with Good Viability / Ecological Integrity

    ScoreB - Very few (1-3) occurrences with excellent or good viability or ecological integrity

    Environmental Specificity

    ScoreC - Moderate. Generalist or community with some key requirements scarce

    Long-term Trend

    ScoreU - Unknown

    Trends

    ScoreU - Unknown

    Threats

    ScoreD - Low

    CommentNo known threats.

    Intrinsic Vulnerability

    ScoreC - Not intrinsically vulnerable

 
General Description
Plants: Annual. Stems whitish and shining (Hitchcock et al. 1961), 8–30 cm in height, simple (Lesica 2012) or frequently branched from below, smooth below, smooth to rough above (McGregor et al. 1986).

Leaves: Leaves basal and cauline, scaberulous (roughened minutely), possessing ability to attach to clothes and hair (McGregor et al. 1986), 2–8 cm in length (Lesica 2012), 2-12 mm in width (McGregor et al. 1986); basal leaf blades mostly linear, the margins entire to shallowly lobed, tapering to a narrow petiole; cauline leaf blades from nearly entire to laciniate with linear lobes, with short petiole or none (Hitchcock et al. 1961).

Inflorescence: Flowers single to several in an open flat-topped inflorescence, with flowering beginning at the margins and progressing inward (McGregor et al. 1986).
10X

(Lesica’s contribution adapted from Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX.)

Phenology
Flowers May – July (McGregor et al. 1986; Hitchcock et al. 1961).

Diagnostic Characteristics
Mentzelia albicaulis resembles the more common M. dispersa. M. dispersa differs by possessing typically unlobed leaves as opposed to nearly entire to shallowly lobed, ovate rather than linear involucral bracts, and smaller papillae on the seed surface, requiring 20X lens to see as opposed to 10X (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC to SD south to CA, NM, TX and Mexico (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 44

(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
Sparsely vegetated, often disturbed and sandy soil of grasslands, steppe, open forest; plains, valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).)

Reproductive Characteristics
Flowers: Flowers yellow with linear bracts, diurnal; sepals 2–3 mm long; petals 5, obovate, 3–5 mm long (Lesica 2012); stamens numerous, shorter than petals (McGregor et al. 1986).

Fruit: Capsule cylindric, 8–20 mm long (Lesica 2012), ca 2 mm in diameter (Hitchcock et al. 1961), opening at the top with a valve (McGregor et al. 1986); seeds angular, in 2 to 3 columns, papillose under 10X (Lesica 2012).

(Lesica’s contribution adapted from Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX.)

References
  • Literature Cited AboveLegend:   View Online Publication
    • Hitchcock, C. L., A. Cronquist, M. Ownbey, and J. W. Thompson. 1961. Vascular Plants of the Pacific Northwest, Part 3. Saxifragaceae to Ericaceae. Seattle, WA and London, England: University of Washington. 614 pp.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • McGregor, R.L., coordinator, and T.M. Barkley, R.E. Brooks, and E.K. Schofield, eds.: Great Plains Flora Association. 1986. Flora of the Great Plains. Lawrence, KS: Univ. Press Kansas. 1392 pp.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Britton, N. L. and A. B. Brown. 1913. An Illustrated Flora of the Northern United States, Canada, and the British Possessions. 2nd Edition in 3 Volumes. New York, NY: Charles Scribner's Sons. B13BRI01PAUS.
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Citation for data on this website:
White-stem stickleaf — Mentzelia albicaulis.  Montana Field Guide.  .  Retrieved on , from