Hennediella heimii var. arctica

(Lindberg) R. H. Zander

Bull. Buffalo Soc. Nat. Sci. 32: 248. 1993,.

Basionym: Pottia heimii var. arctica Lindberg Öfvers. Kongl. Vetensk.-Akad. Förh. 23: 551. 1867
Synonyms: Desmatodon heimii var. arcticus (Lindberg) H. A. Crum Gymnostomum obtusifolium Pottia heimii var. obtusifolia (R. Br. bis) I. Hagen
Treatment appears in FNA Volume 27. Treatment on page 636.

Leaves broadly ovate to broadly elliptic, concave and often cucullate, apex usually obtuse, margins usually entire; costa often ending before the apex.


Phenology: Capsules mature late summer (Aug).
Habitat: Exposed soil, silt
Elevation: low elevations

Distribution

V27 937-distribution-map.gif

Greenland, N.W.T., Nunavut, Ont., Alaska, Europe, n Asia.

Discussion

Variety arctica is a somewhat poorly circumscribed taxon largely restricted to the Arctic. It is generally much smaller than var. heimii, with leaves commonly 0.5–0.8 mm.

Selected References

None.

Lower Taxa

None.
Richard H. Zander +
(Lindberg) R. H. Zander +
Pottia heimii var. arctica +
Greenland +, N.W.T. +, Nunavut +, Ont. +, Alaska +, Europe +  and n Asia. +
low elevations +
Exposed soil, silt +
Capsules mature late summer (Aug). +
Bull. Buffalo Soc. Nat. Sci. +
Desmatodon heimii var. arcticus +, Gymnostomum obtusifolium +  and Pottia heimii var. obtusifolia +
Hennediella heimii var. arctica +
Hennediella heimii +
variety +