Bartsia alpina

Linnaeus

Sp. Pl. 2: 602. 1753.

Common names: Velvet bells alpine bartsia tornarsup-narsue djaevelens blomster bartsie alpine alpenhelm
Illustrated
Synonyms: Bartsia alpina var. jensenii Lange B. alpina var. pallida Wormskjold ex Lange
Treatment appears in FNA Volume 17. Treatment on page 489. Mentioned on page 488.

Perennials simple or branched, 10–30 cm. Leaves 4–10 pairs, divaricate; blade ovate, (5–) 10–25 x (6–) 9–17 mm, rugose, abaxial surface glabrescent to hirsute, adaxial glabrescent. Inflorescences with 2–8 pairs of flowers; bracts resembling foliage leaves, distal ones violet. Pedicels 2–4 mm. Flowers moreorless divaricate, 15–20 mm; calyx green, often with violet markings, 5–9 mm, divided less than 1/2 length, hirsute; corolla scarcely curved, pilose, galea 3–5 mm, divided from abaxial lip less than 1/4 length of corolla, abaxial lip 2–3 mm; stamens included, 1/3–1/2 length of corolla from base, extending to abaxial lip; anthers white, equal, apex mucronate, villous; style 14–20 mm, stigma moreorless exserted. Capsules ovoid, terete, 6–10 mm. Seeds 1.4–2 mm. 2n = 24.


Phenology: Flowering Jun–Aug.
Habitat: Subarctic and arctic tundra, lakeshores, fens.
Elevation: 0–1000 m.

Distribution

Greenland, Man., Nfld. and Labr., N.W.T., Nunavut, Ont., Que., Europe

Discussion

Bartsia alpina has been reported to parasitize a wide range of hosts, including members of Ericaceae, Fabaceae, and Poaceae (U. Molau 1990). Outside the flora area, it occurs throughout northern Europe and in disjunct populations in the Alps and Pyrenees.

Bartsia alpina has been divided into varieties based primarily on variation in the color of the corolla. The most common form has violet corollas; other populations throughout the range occasionally include individuals with pale violet to yellow corollas. U. Molau (1990) reported that these forms are likely an expression of phenotypic variation induced by infection by either a gall fly or imperfect fungus.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property.

... more about "Bartsia alpina"
0 length of corolla;1/4 length of corolla +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
glabrescent +  and hirsute +
Christopher P. Randle +  and Simon Uribe-Convers +
Linnaeus +
? (?) +, ? (?) +  and ? (?) +
0 cm0 mm <br />0 m <br /> (?) +
divided +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
terete;ovoid +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Velvet bells +, alpine bartsia +, tornarsup-narsue +, djaevelens blomster +, bartsie alpine +  and alpenhelm +
violet +  and yellow +
Greenland +, Man. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Ont. +, Que. +  and Europe +
0–1000 m. +
2 +  and 1 +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
divided +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Subarctic and arctic tundra, lakeshores, fens. +
axillary +  and terminal +
deciduous +
cauline +  and basal +
triangular +
crenate +  and serrate +
tenuinucellate +  and unitegmic +
campylotropous-like +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering Jun–Aug. +
fusiform-cylindric +
Illustrated +
1/3 length of corolla;1/2 length of corolla +
subequal +
aerial +  and subterranean +
not fleshy +
1.4 cm14 mm <br />0.014 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Bartsia alpina var. jensenii +  and B. alpina var. pallida +
Bartsia alpina +
species +
branched +  and simple +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +