Difference between revisions of "Crossidium crassinervium var. crassinervium"
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|accepted_name=Crossidium crassinervium var. crassinervium | |accepted_name=Crossidium crassinervium var. crassinervium | ||
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|name=Crossidium desertorum | |name=Crossidium desertorum | ||
|authority=Holzinger & E. B. Bartram | |authority=Holzinger & E. B. Bartram | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Crossidium erosum | |name=Crossidium erosum | ||
|authority=Holzinger & E. B. Bartram | |authority=Holzinger & E. B. Bartram | ||
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}} | }} | ||
|hierarchy=Pottiaceae;Pottiaceae subfam. Pottioideae;Crossidium;Crossidium crassinervium;Crossidium crassinervium var. crassinervium | |hierarchy=Pottiaceae;Pottiaceae subfam. Pottioideae;Crossidium;Crossidium crassinervium;Crossidium crassinervium var. crassinervium | ||
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name=Crossidium crassinervium var. crassinervium | name=Crossidium crassinervium var. crassinervium | ||
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|rank=variety | |rank=variety | ||
|parent rank=species | |parent rank=species | ||
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|publication year= | |publication year= | ||
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| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V27/V27_889.xml |
|subfamily=Pottiaceae subfam. Pottioideae | |subfamily=Pottiaceae subfam. Pottioideae | ||
|genus=Crossidium | |genus=Crossidium | ||
Latest revision as of 21:29, 5 November 2020
Plants 1–5 mm. Leaves lanceolate, lingulate to lingulate-ovate, 0.5–1.3 mm, margins recurved to revolute from near apex to near base, apex obtuse, rounded or emarginate, piliferous; costa excurrent, with an abaxial epidermis, filaments 2–12 cells, cells cylindric, thin-walled, with 2–4 hollow papillae on apical cell, terminal cell cylindric or conic; cells of leaf base 7–58 µm, medial and distal cells 7–22 µm, smooth. Sexual condition dioicous or cladautoicous. Seta 6–13 mm. Capsule urn ovoid-cylindric, 0.9–2.2 mm; operculum 0.6–1 mm; peristome strongly twisted, 400–900 µm. Spores spheric, nearly smooth to conspicuously papillose, 9–15 µm.
Phenology: Capsule mature Dec–Jul.
Habitat: Soil and rocks, on banks and dry washes, under shrubs in desert areas
Elevation: moderate to high elevations (500-1700 m)
Distribution
Ariz., N.Mex., Tex., Utah, Mexico, Europe, Asia (China, India), n Africa, Atlantic Islands (Canary Islands).
Discussion
Crossidium crassinervium is characterized by the smooth-walled leaf cells and long, thin-walled filaments with cylindric to conic terminal cells. Papillae are present on the apex of the terminal cell and, occasionally, on the distal leaf cells.
Selected References
None.