Difference between revisions of "Microbryum davallianum"

(Smith) R. H. Zander

Bull. Buffalo Soc. Nat. Sci. 32: 240. 1993,.

Basionym: Gymnostomum davallianum Smith Ann. Bot. (König & Sims) 1: 577. 1805
Synonyms: Pottia davalliana (Smith) C. Jensen
Treatment appears in FNA Volume 27. Treatment on page 629. Mentioned on page 628.
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|subfamily=Pottiaceae subfam. Pottioideae
 
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Latest revision as of 21:29, 5 November 2020

Distal laminal cells weakly convex superficially, adaxial surface of costa not mammillose. Seta elongate. Capsule cylindrical, stegocarpous but never cleistocarpous. Spores granulose, low-papillose or spiculose, large, 28–39 µm.

Distribution

V27 924-distribution-map.gif

North America, Mexico, Europe, sw Asia, Africa, Pacific Islands (New Zealand).

Discussion

Varieties 3 (3 in the flora).

Selected References

None.

Key

1 Capsules commonly wide-mouthed when dehisced, with a single row of thickened cells below mouth, peristome absent, spores spiculose, 31-39 µm. Microbryum davallianum var. davallianum
1 Capsules narrow mouthed when dehisced, with usually 2 or more rows of thickened cells below mouth, peristome variously absent or present, spores merely papillose, 27-34 µm > 2
2 Peristome well developed Microbryum davallianum var. commutatum
2 Peristome rudimentary or absent Microbryum davallianum var. conicum