About Drosera linearis Goldie
Drosera linearis Goldie is a herbaceous perennial carnivorous plant. Its entire long linear leaves are covered in gland-tipped hairs, and plants grow in rosettes 6–15 cm wide. The leaf stalks (stipules) are 5 mm wide and hairless. The linear leaf blades measure 1–6 cm long and 1.5–3 mm wide, with edges lined by hair-like glands. Hairless flower scapes grow 6 to 13 cm long, and each scape bears 1 to 4 white flowers at its end. The flowers are 6–8 mm wide and have obovate petals. Seed capsules are 4–5 mm long; when ripe, the capsules contain black seeds that are oblong-obovoid to rhomboidal in shape, 0.5–0.8 mm long, and densely covered in irregular crater-like pits. The diploid (2N) chromosome count of this species is 20. The range of Drosera linearis is centered around the Great Lakes region, with scattered populations occurring in western Canada and the Canadian maritime provinces. It is rare across most of its range, and only locally common in specific habitats. In Minnesota, it occurs in remote peatlands of the state's northwestern and north central regions, where it grows in minerotrophic water sourced from groundwater or nearby uplands. Due to its overall rareness and restrictive habitat requirements, Drosera linearis is listed as a threatened species in Minnesota.
