Tofieldia pusilla
Syn. Pl. 1: 399. 1805.
Stems 1.5–30 cm. Leaf blades to 8 cm × 3 mm. Inflorescences open, 3–35-flowered, 0.3–5 cm; bracts whitish, margins deeply 3-lobed; bracteoles absent. Flowers: tepals white to yellowish green, 1.5–3 mm, inner tepals slightly longer than outer; stamens ± equaling tepals; ovary ellipsoid; styles 0.3–0.4 mm; pedicel 1–3 mm. Capsules subglobose, 2.5–3 mm. Seeds 0.6–0.8 mm. 2n = 30.
Phenology: Flowering summer.
Habitat: Moist, open areas, often calcareous
Elevation: 0–2300 m
Distribution
Greenland, Alta., B.C., Man., Nfld. and Labr., N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Mich., Minn., Mont., Eurasia.
Discussion
What appear to be hybrids between Tofieldia pusilla and T. coccinea occasionally occur in Greenland and the Northwest Territories. They are characterized by a leafy bract at or near the middle of the stem and enlarged, crimson bracts below the pedicels. In some suspected hybrids, the bracts are absent, and fused bracteoles, trunctate or lobed, sheathe the pedicels well below the flowers.
Selected References
None.