View source for Selaginella arenicola subsp. riddellii

{{Treatment/ID
|accepted_name=Selaginella arenicola subsp. riddellii
|accepted_authority=(Van Eseltine) R. M. Tryon
|publications={{Treatment/Publication
|title=Ann. Missouri Bot. Gard.
|place=42: 24. 1955
|year=1955
}}
|common_names=Riddell's spike-moss
|basionyms={{Treatment/ID/Synonym
|name=Selaginella riddellii
|authority=unknown
}}
|synonyms=
|hierarchy=Selaginellaceae;Selaginella;Selaginella subg. Tetragonostachys;Selaginella arenicola;Selaginella arenicola subsp. riddellii
|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 arenicola]]</div><div class="higher-taxon"><small>subspecies</small>[[Selaginella arenicola subsp. riddellii]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="leaf fixation or orientation"><b>Leaves </b>(aerial stems) usually loosely appressed;</span> <span class="statement" id="st-d0_s1" data-properties="base pubescence">base often glabrescent.</span> <span class="statement" id="st-d0_s2" data-properties="strobilus size;apical growth reproduction"><b>Strobili </b>sometimes with apical vegetative growth, not distinctly larger than subtending stem.</span> <span class="statement" id="st-d0_s3" data-properties="sporophyll shape"><b>Sporophylls </b>usually not abruptly tapering toward apex;</span> <span class="statement" id="st-d0_s4" data-properties="apex course">apex straight.</span><!--

-->{{Treatment/Body
|habitat=Mostly on granite outcrops, granite boulders, or gravelly or sandy soil
|elevation=0–200 m
|distribution=Ala.;Ark.;Ga.;La.;Okla.;Tex.
|discussion=<p>The specimens of Selaginella arenicola subsp. riddellii from Texas are more constant in their morphologic characteristics and thus more easily separated from subsp. arenicola.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Selaginella arenicola subsp. riddellii
|author=
|authority=(Van Eseltine) R. M. Tryon
|rank=subspecies
|parent rank=species
|synonyms=
|basionyms=Selaginella riddellii
|family=Selaginellaceae
|habitat=Mostly on granite outcrops, granite boulders, or gravelly or sandy soil
|elevation=0–200 m
|distribution=Ala.;Ark.;Ga.;La.;Okla.;Tex.
|reference=None
|publication title=Ann. Missouri Bot. Gard.
|publication year=1955
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_355.xml
|genus=Selaginella
|subgenus=Selaginella subg. Tetragonostachys
|species=Selaginella arenicola
|subspecies=Selaginella arenicola subsp. riddellii
|apex course=straight
|apical growth reproduction=vegetative
|base pubescence=glabrescent
|leaf fixation or orientation=appressed
|sporophyll shape=tapering
|strobilus size=not distinctly larger
}}<!--

-->[[Category:Treatment]][[Category:Selaginella arenicola]]