View source for Physcomitrella readeri

{{Treatment/ID
|accepted_name=Physcomitrella readeri
|accepted_authority=(Müller Hal.) I. G. Stone & G. A. M. Scott
|publications={{Treatment/Publication
|title=J. Bryol.
|place=7: 604. 1974,
}}
|basionyms={{Treatment/ID/Basionym
|name=Ephemerella readeri
|authority=Müller Hal.
|publication_title=Hedwigia
|publication_place=41: 120. 1902
}}
|synonyms={{Treatment/ID/Synonym
|name=Physcomitrella californica
|authority=H. A. Crum & L. E. Anderson
}} {{Treatment/ID/Synonym
|name=Physcomitrella patens subsp. californica
|authority=(H. A. Crum & L. E. Anderson) B. C. Tan
}} {{Treatment/ID/Synonym
|name=Physcomitrella patens subsp. readeri
|authority=(Müller Hal.) B. C. Tan
}}
|hierarchy=Funariaceae;Physcomitrella;Physcomitrella readeri
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Funariaceae]]</div><div class="higher-taxon"><small>genus</small>[[Physcomitrella]]</div><div class="higher-taxon"><small>species</small>[[Physcomitrella readeri]]</div></div>
|volume=Volume 27
|mention_page=
|treatment_page=page 195
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>to 4.5 mm. <b>Stems</b> to 3 mm, branching near base. <b>Leaves</b> to 2 × 0.6 mm, ovate-lanceolate, acuminate, margins plane, serrulate in distal 1/3; costa extending 1/2–2/3 of the leaf length, occasionally slightly forked at apex; proximal cells 75–180 × 35–60 µm, distal cells 45–115 × 15–50 µm, marginal cells not differentiated. <b>Calyptra</b> entire at base, often with a single slit extending toward apex. <b>Spores</b> 27–42 µm.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature Jan–Apr.
|habitat=Mineral soil (mudflats) in lake banks
|elevation=low elevations
|distribution=Calif.;Asia (China;Japan);Pacific Islands (New Zealand);Australia.
|discussion=<p><i>Physcomitrella readeri</i> is distinguished from the sympatric <i>P. patens</i> mainly by its shorter costa. The size of the rostrum has also been given taxonomic significance, but capsules of <i>P. patens</i> may also bear an apiculum reaching 0.2 mm. Similarly, the forked costa has been considered diagnostic of <i>P. readeri</i>, but this feature is not constant. The status of <i>P. readeri</i> has been repeatedly debated, but the geographic restriction of plants with short costae to a circum-Pacific range may justify taxonomic recognition. <i>Physcomitrella readeri</i> grows with <i>P. patens</i> in two localities in California.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Physcomitrella readeri
|author=
|authority=(Müller Hal.) I. G. Stone & G. A. M. Scott
|rank=species
|parent rank=genus
|synonyms=Physcomitrella californica;Physcomitrella patens subsp. californica;Physcomitrella patens subsp. readeri
|basionyms=Ephemerella readeri
|family=Funariaceae
|phenology=Capsules mature Jan–Apr.
|habitat=Mineral soil (mudflats) in lake banks
|elevation=low elevations
|distribution=Calif.;Asia (China;Japan);Pacific Islands (New Zealand);Australia.
|reference=None
|publication title=J. Bryol.
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V27/V27_263.xml
|genus=Physcomitrella
|species=Physcomitrella readeri
}}<!--

-->[[Category:Treatment]][[Category:Physcomitrella]]