State Rank Reason (see State Rank above)
Trautvetteria caroliniensis in Montana occurs at the eastern edge of its northwestern North America distribution. It grows in western spruce-fir forests and subalpine meadows and becomes more abundant westerly into Idaho. Although it doesn't occupy a lot of habitat in Montana, populations appear to be stable and continuous with those in Idaho where it is found to be common.
- Details on Status Ranking and Review
ScoreE - 5,000-20,000 sq km (~2,000-8,000 sq mi)
Area of Occupancy
ScoreD - 6-25 4-km2 grid cells
Number of Populations
ScoreC - 21 - 80
Number of Occurrences or Percent Area with Good Viability / Ecological Integrity
ScoreB - Very few (1-3) occurrences with excellent or good viability or ecological integrity
ScoreC - Moderate. Generalist or community with some key requirements scarce
ScoreD - Low
CommentNo known threats.
Herbaceous perennial from short rhizomes and fibrous roots. Stems erect, 50–80 cm. Leaves basal and cauline, petiolate; the blade pubescent below, broadly cordate, deeply palmately lobed into 5 to 11 dentate segments; the basal to 30 cm across. Inflorescence a terminal corymb with numerous flowers, glandular and covered with dense, small, hooked hairs. Flowers perfect, radially symmetrical; sepals 3 to 5, greenish, ca. 3 mm long, deciduous; petals absent; stamens numerous, 4–8 mm long; pistils ca. 15, 1-seeded. Fruit a thin-walled and inflated achene (utricle) 2–3 mm long with a hooked beak (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
Populations in the western half of North America are recognized by many as var. occidentalis
(Gray) C.L. Hitchock.
Moist coniferous forest, often along streams and with red cedar; valleys, montane (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX