Difference between revisions of "Argyrochosma microphylla"

(Mettenius ex Kuhn) Windham

Amer. Fern J. 77: 40. 1987.

Basionym: Pellaea microphylla Mettenius ex Kuhn Linnaea 36: 86. 1869
Synonyms: Cheilanthes parvifolia (R. M. Tryon) Mickel Notholaena parvifolia R. M. Tryon
Treatment appears in FNA Volume 2.
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|name=Pellaea microphylla
 
|name=Pellaea microphylla
 
|authority=Mettenius ex Kuhn
 
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|publication_title=Linnaea
 
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|name=Cheilanthes parvifolia
 
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}} {{Treatment/ID/Synonym
 
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|name=Notholaena parvifolia
 
|name=Notholaena parvifolia
 
|authority=R. M. Tryon
 
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_142.xml
 
|genus=Argyrochosma
 
|genus=Argyrochosma
 
|species=Argyrochosma microphylla
 
|species=Argyrochosma microphylla

Latest revision as of 20:21, 5 November 2020

Stem scales brown. Leaves 7–25 cm. Petiole brown, 0.75–1.5 mm diam. Blade deltate to ovate, 3–4-pinnate proximally, leathery, abaxially and adaxially glabrous; rachis flattened or shallowly grooved adaxially. Pinna costae straight to somewhat flexuous, branches rarely arising from prominent angles. Ultimate segments articulate, dark color of stalks stopping abruptly at segment bases; segment margins recurved to revolute, often concealing sporangia; veins obscure adaxially. Sporangia submarginal, borne on distal 1/3 of secondary veins, containing 64 spores. 2n = 54.


Phenology: Sporulating summer–fall.
Habitat: Rocky limestone hillsides and cliffs
Elevation: 300–2100 m

Discussion

Argyrochosma microphylla is probably the most distinctive species of Argyrochosma in the flora. Chromosome studies by I. W. Knobloch et al. (1973) suggest that it may include diploid and tetraploid cytotypes.

Selected References

None.

Lower Taxa

None.
... more about "Argyrochosma microphylla"
Michael D. Windham +
(Mettenius ex Kuhn) Windham +
Pellaea microphylla +
N.Mex. +, Tex. +  and n Mexico. +
300–2100 m +
Rocky limestone hillsides and cliffs +
Sporulating summer–fall. +
Amer. Fern J. +
Cheilanthes parvifolia +  and Notholaena parvifolia +
Argyrochosma microphylla +
Argyrochosma +
species +