Microbryum davallianum var. davallianum
Synonyms: Pottia starckeana subsp. minutulum (Schwägrichen) D. P. Chamberlain
Treatment appears in FNA Volume 27. Treatment on page 630.
Revision as of 06:13, 30 July 2020 by imported>Volume Importer
Capsule commonly wide-mouthed when dehisced, with a single row of thickened cells below mouth; peristome absent. Spores spiculose (finely spinose) and large (31–39 µm.).
Phenology: Capsules mature late summer to early winter (Sept-Nov).
Habitat: Bare soil, vacant lots, fields
Elevation: low to moderate elevations
Distribution
Ont., Mich., N.Y., Europe, sw Asia, n Africa, Pacific Islands (New Zealand)
Discussion
In var. davallianum the spines of the spores are 2–2.5 µm. Distal laminal papillae are hollow or occasionally solid, ca. 2 per lumen, usually simple but in some specimens (e.g., Ontario, Bruce County, C. Williams 1200, CANM) mostly 2-fid and hollow (with a distinct saddle between the projections) and distinctly C-shaped in optical section.
Selected References
None.
Lower Taxa
None.
... more about "Microbryum davallianum var. davallianum"
absent +
differentiated +
absent +
absent +
not mammillose +
revoluble +
persistent +
absent +
of 1;2 rows +
acute +
absent +
differentiated +
usually slightly wider +
trabeculate +
absent +
usually ovate;oblong +
not differentiated +
obovoid +
papillose +
wide-mouthed +
cylindrical +
specialized +
absent +
bulging +
convex +
thickened +
thin +
brownish +
thickened +
absent +
2-stratose +
stacked +
9mm;16mm +
recurved +
1-stratose +
rhomboidal;shortrectangular;quadrate;hexagonal +
spiculose +
filiform +
central +
differentiated +
multicellular +
absent +
common +
asexual +
absent +
absent +
Present +
enlarged +
differentiated +
contorted +
appressed +
spreading +
concave;keeled;channeled;ovoid;lanceolate or lingulate +
ligulate +
appressed +
fragile +
spreading +
occasionally less papillose and somewhat thicker walled +
recurved +
papillose +
plane +
involute +
thicker +
absent +
low-conic +
photosynthetic +
tall +
absent +
sheathing +
long-oval +
usually larger +
absent +
ligulate +
irregular +
untwisted +
absent +
rudimentary +
triangular +
differentiated +
not differentiated +
Bull. Buffalo Soc. Nat. Sci. +
straight +
oblique +
single +
absent +
differentiated +
twisted +
elongate +
spiculose +
granulose +
large +
branching +
sheathing +
Microbryum davallianum var. davallianum +
Microbryum davallianum +
variety +
apiculate +
ovate;short elliptical +
reflexed +
low +
higher +
1;2;4 +
rectangular +
thin +
bulbiform +
scattered +
brown;reddish-brown +
occasionally smaller than the perichaetiate +