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Idaho Saxifrage - Micranthes idahoensis
Other Names:
Micranthes marshallii, Saxifraga marshallii, Saxifraga idahoensis, Saxifraga occidentalis var. idahoensis
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Native Species Global Rank :
G4
State Rank :
S4
C-value :
7
Agency Status USFWS :
USFS :
BLM :
External Links
General Description
Perennial from a simple rootstock. Stems solitary, scapose, 10–25 cm, glandular-hairy. Leaves basal (rarely 1 cauline), petiolate; the blade broadly ovate, truncate or rounded to the petiole, 1–4 cm long, prominently dentate, glabrous above, sparsely brown hairy beneath. Inflorescence glandular, spreading-paniculate. Flowers: calyx cup-shaped with lobes 1–2 mm long; hypanthium <0.5 mm long; petals obovate, white, 2–3 mm long with 2 yellow spots at the base; ovary superior. Capsule 2–4 mm long, follicle-like (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX ).
Lesica (2012) treats this species as
M. marshallii .
Species Range
Montana Range
Range Descriptions
Native
Range Comments
WA to MT south to CA (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX ).
Observations in Montana Natural Heritage Program Database
Number of Observations: 2
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Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Habitat
Very shallow, usually moss-covered soil on rock outcrops in the montane to timberline zones.
Stewardship Responsibility
References
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