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Montana Field Guide

Montana Field Guides

Alpine Brook Saxifrage - Saxifraga rivularis
Other Names:  Saxifraga debilis, Saxifraga rivularis var. debilis

Status Under Review

Global Rank: G5?
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 8

External Links






 
General Description
Stems erect to ascending, glabrous to sparsely hairy, 1–15 cm. Leaves basal and cauline, long-petiolate, reduced above; the blade glabrous, reniform, 3–20 mm wide, 3- to 5-lobed. Inflorescence of 1 to 3 flowers. Flowers: calyx with lobes 1–2 mm long; hypanthium 1–2 mm long; petals white, oblanceolate, 2–4 mm long; ovary half inferior. Capsule 4–5 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

In MT we have subspecies hyperborea (R. Br.) Dorn and debilis (Engelm. ex A. Gray) A. Love, D. Love & B.M. Kapoor.

Species Range
Present
 


Range Comments
Circumpolar south to CA, AZ and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 3

(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
Moist or wet, sparsely vegetated, gravelly soil of rock crevices, scree, turf, often beneath boulders or along streams; alpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Alpine Brook Saxifrage — Saxifraga rivularis.  Montana Field Guide.  .  Retrieved on , from