View source for Selaginella arizonica

{{Treatment/ID
|accepted_name=Selaginella arizonica
|accepted_authority=Maxon
|publications={{Treatment/Publication
|title=Smithsonian Misc. Collect.
|place=72: 5–6. 1920
|year=1920
}}
|common_names=Arizona spike-moss
|basionyms=
|synonyms=
|hierarchy=Selaginellaceae;Selaginella;Selaginella subg. Tetragonostachys;Selaginella arizonica
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Selaginellaceae]]</div><div class="higher-taxon"><small>genus</small>[[Selaginella]]</div><div class="higher-taxon"><small>subgenus</small>[[Selaginella subg. Tetragonostachys]]</div><div class="higher-taxon"><small>species</small>[[Selaginella arizonica]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>on rock or terrestrial, forming rather loose mats. <b>Stems</b> not readily fragmenting, prostrate, upperside and underside structurally different, irregularly forked, branches determinate, tips upturned in extremely dry conditions. <b>Rhizophores</b> borne on upperside of stem throughout, 0.25–0.3 mm diam. <b>Leaves</b> 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). <b>Underside</b> 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. <b>Upperside</b> 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. <b>Strobili</b> solitary, 5–10 mm; sporophylls ovate-deltate, abaxial ridges not prominent, base glabrous, margins short-ciliate to denticulate, apex acute.</span><!--

-->{{Treatment/Body
|habitat=In rock crevices or on gravel, on sandstone, igneous, or rarely limestone substrates
|elevation=600–2000 m
|distribution=Ariz.;Tex.;Mexico in Baja California;Sonora.
|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>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Selaginella arizonica
|author=
|authority=Maxon
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=
|family=Selaginellaceae
|habitat=In rock crevices or on gravel, on sandstone, igneous, or rarely limestone substrates
|elevation=600–2000 m
|distribution=Ariz.;Tex.;Mexico in Baja California;Sonora.
|reference=None
|publication title=Smithsonian Misc. Collect.
|publication year=1920
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V2/V2_485.xml
|genus=Selaginella
|subgenus=Selaginella subg. Tetragonostachys
|species=Selaginella arizonica
}}<!--

-->[[Category:Treatment]][[Category:Selaginella subg. Tetragonostachys]]