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Montana Field Guide

Montana Field Guides

William's Conimitella - Conimitella williamsii

Native Species

Global Rank: G4
State Rank: S4
* (see State Rank Reason below)

Agency Status
MNPS Threat Rank:
C-value: 5

External Links

State Rank Reason (see State Rank above)
Regional endemic genus, numerous collections from several counties. Habitat probably mostly secure (high elevation meadows).
  • Details on Status Ranking and Review
    William's Conimitella (Conimitella williamsii) Conservation Status Review
    Review Date =
General Description
Perennial herbs from simple, ascending, scaly rootstocks. Stems simple, leafless, glandular-puberulent, 20–60 cm. Leaves long-petiolate in a basal rosette; the blades orbicular, cordate with crenulate margins, 1–5 cm wide, glabrous except for curved, marginal cilia, purplish beneath. Inflorescence a 6- to 12-flowered, small-bracted, glandular, spike-like raceme. Flowers 5-merous, regular, perfect, perigynous, obconical; calyx 4–7 mm long with oblong lobes ca. 1 mm long; petals white, 4–5 mm long, clawed; stamens 5, equaling the calyx lobes. Fruit 2 capsules mostly inferior; seeds numerous (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
A regional endemic of MT, northern WY, and eastern ID.

Stony, usually calcareous soil of grasslands, open forest, meadows; montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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Citation for data on this website:
William's Conimitella — Conimitella williamsii.  Montana Field Guide.  .  Retrieved on , from