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Small Tofieldia - Tofieldia pusilla
State Rank Reason (see State Rank above)
Very rare in Montana, where it is known from only a very small area in Glacier National Park.
Stems glabrous, 3–12 cm. Leaves 15–25 × 1–2 mm. Flowers: tepals 1–1.5 mm long. Capsule 2–3 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
Flowering in July-early August.
Distinguished from other members of the lily family by having a rootstock or short rhizome rather than a bulb or corm, all basal, linear leaves, and relatively small flowers with 6 similar perianth parts and a pistil with three styles. The more common Triantha occidentalis (syn. Tofieldia gluntinosa) is generally a larger plant with longer leaves and is strongly glandular hairy.
Circumpolar south to BC and Glacier County in MT (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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Moist tundra in the alpine zone.
Ecological Systems Associated with this Species
Threats or Limiting Factors
STATE THREAT SCORE REASON
Threat impact not assigned because threats are not known (MTNHP Threat Assessment 2021).
- Literature Cited AboveLegend: View Online Publication
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Additional ReferencesLegend: View Online Publication
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- Bradshaw, M. E. 1981. Monitoring grassland plants in Upper Teesdale, England. Pp 241-251 in: The biological aspects of rare plant conservation. H. Synge, (ed.) John Wiley & Sons Ltd.
- Lesica, P. and B. McCune. 1992. Monitoring the effects of global warming using peripheral rare plants in wet alpine tundra in Glacier National Park, Montana. Unpublished report to Glacier National Park, Research Division, West Glacier, Montana 59936. 55pp.
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