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Montana Field Guide

Montana Field Guides

Lace Foam-flower - Tiarella trifoliata
Other Names:  Tiarella unifoliata


Global Rank: G5
State Rank: S4S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

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General Description
Rhizomatous perennial. Stems, glandular above, 15–50 cm. Leaves mostly basal, petiolate, sparsely hairy; broadly ovate, cordate, 3–8 cm wide, 3- to 5-lobed, crenate. Inflorescence a narrow, glandular, open panicle. Flowers nodding perfect, 5-merous; calyx irregularly cup-shaped with erect lobes 1–3 mm long; petals white, linear, 2–3 mm long, quickly falling; stamens 10, exserted, unequal, ovary superior. Fruit a capsule with 2 unequal, ovoid chambers, 4–6 and 7–10 mm long; seeds 1 per chamber (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
AK south to CA, ID and MT (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 148

(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 coniferous forest; montane, lower subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Lace Foam-flower — Tiarella trifoliata.  Montana Field Guide.  .  Retrieved on , from