Orthotrichum pallens var. johnseniae

Vitt

Bryologist 74: 162, figs. 13 – 16. 1971.

Endemic
Treatment appears in FNA Volume 28. Treatment on page 62. Mentioned on page 61.
Revision as of 19:47, 24 September 2019 by FNA>Volume Importer

Stem leaves broadly lanceolate to lanceolate; margins entire; apex narrowly obtuse or bluntly acute. Seta 0.5–1 mm. Capsule oblong-cylindric, 1.5–2 mm; exostome teeth recurved-reflexed, finely papillose; endostome segments 8, of 1 row of cells, shorter than exostome, smooth. Calyptra sparsely hairy. Spores 13–20 µm.


Habitat: Basaltic boulders in spruce-popular forests
Elevation: high elevations (3000 m)

Discussion

Variety johnseniae is distinguished by its hairy calyptrae. The capsules have eight endostome segments and are shorter and moderately constricted below the mouth. The stomata are barely covered with subsidiary cells which usually have their interior walls thickened, and the exostome teeth tend to be somewhat recurved instead of reflexed.

Selected References

None.

Lower Taxa

None.