Amphidium lapponicum

(Hedwig) Schimper

Coroll. Bryol. Eur.,39. 1856

Basionyms: Anictangium lapponicum
Found in FNA Volume 28. Treatment on page 39.
OrthotrichAmphidiumLapponicum.jpeg
Plants 0.5–3.5 cm. Stem leaves ligulate-lanceolate, 2–3 mm; margins plane, entire; basal laminal cells clear, walls firm; distal cells 8–11 µm, obscured by papillae, papillae warty, relatively large. Sexual condition autoicous; perichaetial leaves erect, enlarged, base sheathing, apex short-pointed. Seta 1–1.5 mm. Capsule immersed to 1/2 emergent, 0.8–1.3 mm; operculum short-rostrate, less than diam. of capsule. Spores 9–13 µm.

Habitat: Seasonal wet crevices of neutral to acidic cliffs
Elevation: low to high elevations

Distribution

Greenland, Alta., B.C., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., Que., Sask., Yukon, Ala., Ariz., Calif., Colo., Conn., Idaho, Maine, Md., Mich., Minn., Mont., Nev., N.H., N.J., N.Y., Oreg., Pa., Vt., Va., Wash., Wis., Wyo., Europe, Asia.

Discussion

Amphidium lapponicum differs from the two other North American species by its broader leaves and larger, warty, cuticular papillae that obscure the distal laminal cells. The species is autoicous and frequently fruiting, in which case the immersed to emergent capsules serve to identify it. Additionally, the larger laminal cells (8–11 µm) differentiate this species from the other entire-margined species, A. mougeotii, which has smaller distal laminal cells (5–9 µm).

References

None.

Facts about "Amphidium lapponicum"
AuthorDale H. Vitt +
BasionymAnictangium lapponicum +
Elevationlow to high elevations +
HabitatSeasonal wet crevices of neutral to acidic cliffs +
IllustratorPatricia M. Eckel +
ReferenceNone +
Taxon nameAmphidium lapponicum +
Taxon parentAmphidium +
Taxon rankspecies +
VolumeVolume 28 +