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Montana Field Guide

Montana Field Guides

Draba calcifuga - Draba calcifuga

Status Under Review

Global Rank: G3?
State Rank: S3
* (see State Rank Reason below)

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

External Links






State Rank Reason (see State Rank above)
A newly described species from timberline and alpine areas of sw Montana, Idaho and Wyoming. Its widespread distribution and high elevation habitat significantly reduce the potential of negative impacts to the species.
 
General Description
Mat-forming perennial. Stems simple, 1–12 cm. Basal leaves oblanceolate, 3–10 mm long, entire. Stem leaves absent. Vestiture of pectinate hairs, stalked forked or stellate hairs, and simple or forked cilia. Petals yellow, 3–6 mm long. Fruit ovate, ascending, 2–6 × 1.5–3 mm, pubescent with simple hairs; style 0.3–1 mm long; lower pedicels 2–12 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Phenology
Flowering occurs in June-July; Fruit present July-September

Range Comments
Southwest Montana into adjacent Idaho and western Wyoming.

Habitat
Alpine habitats at treeline or above, typically on granitic parent materials.

References
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Citation for data on this website:
Draba calcifuga — Draba calcifuga.  Montana Field Guide.  .  Retrieved on , from