Euphrasia wettsteinii

Stems simple or branched, to 20 cm; branches 1 or 2 pairs, from basal cauline nodes; cauline internode lengths 1.5–4 times subtending leaves. Leaves: blade ovate to cuneate-obovate, 2–10 mm, margins crenate-dentate to serrate-dentate, teeth 1 or 2(–4) pairs, apices obtuse to acute. Inflorescences sparsely spicate, not 4-angled, beginning at node 2–5; proximal internode lengths 2–4 times subtending bracts; bracts green, sometimes purplish adaxially, broader than leaves, broadly ovate, length not more than 2 times width, (2–)4–13 mm, surfaces glabrous, moderately hirsute, or with bristles on veins and hairs eglandular, teeth 3–6 pairs, as long as or slightly longer than wide, apices subacute to acute. Flowers: calyx lobes straight, apex acute; corolla white, sometimes tinged lilac, 5–7 mm, lips +/- equal. Capsules elliptic to obovate, 6–8 mm, equal to or slightly longer than calyx, apex emarginate.

Phenology: Flowering summer.
Habitat: Tundra, grassy meadows, rocky and gravelly shores, beaches, stream flood plains.
Elevation: 0–200 m.

Greenland, Nfld. and Labr., Nunavut, Ont., Que., Eurasia.

Discussion

Euphrasia wettsteinii applies to eglandular populations formerly included by some authors in E. frigida; see 4. E. frigida for details of the lectotypification that fixed the application of E. frigida.

Selected References

None.

Lower Taxa