Difference between revisions of "Selaginella arizonica"

Maxon

Smithsonian Misc. Collect. 72: 5–6. 1920.

Common names: Arizona spike-moss
Illustrated
Treatment appears in FNA Volume 2.
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|common_names=Arizona spike-moss
 
|common_names=Arizona spike-moss
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|special_status={{Treatment/ID/Special_status
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|code=F
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|label=Illustrated
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}}
 
|basionyms=
 
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|elevation=600–2000 m
 
|elevation=600–2000 m
 
|distribution=Ariz.;Tex.;Mexico in Baja California;Sonora.
 
|distribution=Ariz.;Tex.;Mexico in Baja California;Sonora.
|discussion=<p>Selaginella arizonica can be further distinguished from the similar S. peruviana by its broad, thin underside leaves. In S. peruviana the underside leaves are narrow and fleshy.</p>
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|discussion=<p><i>Selaginella arizonica</i> can be further distinguished from the similar <i>S. peruviana</i> by its broad, thin underside leaves. In <i>S. peruviana</i> the underside leaves are narrow and fleshy.</p>
 
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name=Selaginella arizonica
 
name=Selaginella arizonica
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|authority=Maxon
 
|authority=Maxon
 
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|rank=species
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|publication title=Smithsonian Misc. Collect.
 
|publication title=Smithsonian Misc. Collect.
 
|publication year=1920
 
|publication year=1920
|special status=
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|special status=Illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_485.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_485.xml
 
|genus=Selaginella
 
|genus=Selaginella
 
|subgenus=Selaginella subg. Tetragonostachys
 
|subgenus=Selaginella subg. Tetragonostachys

Latest revision as of 20:23, 5 November 2020

Plants on rock or terrestrial, forming rather loose mats. Stems not readily fragmenting, prostrate, upperside and underside structurally different, irregularly forked, branches determinate, tips upturned in extremely dry conditions. Rhizophores borne on upperside of stem throughout, 0.25–0.3 mm diam. Leaves conspicuously dimorphic, in 8 ranks, tightly appressed to ascending, green; abaxial ridges present; apex with transparent to opaque, flattened bristle 0.1–0.3 mm, sometimes becoming acute (by breaking off of bristle). Underside leaves lanceolate, 2–2.5 × 0.5–0.6 mm; base decurrent, glabrous; margins ciliate, cilia transparent to opaque, spreading or ascending, 0.06–0.13 mm. Upperside leaves linear-lanceolate to slightly falcate (on marginal ranks), 1.9–2.25 × 0.4–0.55 mm; base abruptly adnate, pubescent or glabrous; margins ciliate, cilia transparent to opaque, spreading, 0.06–0.15 mm. Strobili solitary, 5–10 mm; sporophylls ovate-deltate, abaxial ridges not prominent, base glabrous, margins short-ciliate to denticulate, apex acute.


Habitat: In rock crevices or on gravel, on sandstone, igneous, or rarely limestone substrates
Elevation: 600–2000 m

Distribution

V2 485-distribution-map.gif

Ariz., Tex., Mexico in Baja California, Sonora.

Discussion

Selaginella arizonica can be further distinguished from the similar S. peruviana by its broad, thin underside leaves. In S. peruviana the underside leaves are narrow and fleshy.

Selected References

None.

Lower Taxa

None.
... more about "Selaginella arizonica"
Iván A. Valdespino +
Arizona spike-moss +
Ariz. +, Tex. +, Mexico in Baja California +  and Sonora. +
600–2000 m +
In rock crevices or on gravel, on sandstone, igneous, or rarely limestone substrates +
Smithsonian Misc. Collect. +
Selaginella arizonica +
Selaginella subg. Tetragonostachys +
species +