Amphidium lapponicum

(Hedwig) Schimper

Coroll. Bryol. Eur., 39. 1856.

Illustrated
Basionym: Anictangium lapponicum Hedwig Sp. Musc. Frond., 40. 1801
Treatment appears in FNA Volume 28. Treatment on page 39.

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).

Selected References

None.

Lower Taxa

None.
... more about "Amphidium lapponicum"
awned +  and apiculate +
Dale H. Vitt +
(Hedwig) Schimper +
not decurrent +
Anictangium lapponicum +
cucullate +
immersed +  and emergent +
mid +  and exserted +
constricted +
differentiated +
short-excurrent +  and percurrent +
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 +  and Asia +
low to high elevations +
linear-lanceolate +
reflexed +, recurved +  and erect +
striate +  and papillose +
rectangular;elliptic +
connate +
occasional +
Seasonal wet crevices of neutral to acidic cliffs +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
ligulate-lanceolate +
flexuose +
not rugose +
linear +  and narrowly lanceolate +
dioicous +, autoicous +  and sexual +
short-rostrate +
mammillose +  and smooth +
autoicous +  and sexual +
2-fid +  and conic +
lateral +  and terminal +
Coroll. Bryol. Eur., +
sinistrorse +, dextrorse +  and erect +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Illustrated +
superficial +
Amphidium lapponicum +
Amphidium +
species +
specialized +
cladautoicous +, pseudautoicous +, dioicous +  and sexual +
incrassate +
olive brown;reddish-brown;olive brown;reddish-brown;dark green +