View source for Isoëtes maritima

{{Treatment/ID
|accepted_name=Isoëtes maritima
|accepted_authority=L. Underwood
|publications={{Treatment/Publication
|title=Bot. Gaz.
|place=13: 94. 1888.
}}
|common_names=Maritime quillwort
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Isoëtes beringgensis
|authority=Komarov
|rank=species
}} {{Treatment/ID/Synonym
|name=Isoëtes echinospora subsp. maritima
|authority=(L. Underwood) A. Löve
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Isoëtes echinospora var. maritima
|authority=(L. Underwood) A. A. Eaton
|rank=variety
}} {{Treatment/ID/Synonym
|name=Isoëtes macounii
|authority=
|rank=species
}}
|hierarchy=Isoëtaceae;Isoëtes;Isoëtes maritima
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Isoëtaceae]]</div><div class="higher-taxon"><small>genus</small>[[Isoëtes]]</div><div class="higher-taxon"><small>species</small>[[Isoëtes maritima]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form or habitat;whole_organism location;whole_organism growth form"><b>Plant </b>usually aquatic, occasionally emergent.</span> <span class="statement" id="st-d0_s1" data-properties="rootstock shape;rootstock shape"><b>Rootstock </b>nearly globose, 2-lobed.</span> <span class="statement" id="st-d0_s2" data-properties="leaf duration;leaf coloration;leaf coloration;leaf arrangement;leaf some measurement;leaf fragility or texture;leaf shape"><b>Leaves </b>± deciduous, bright green, pale toward base, spirally arranged, to 12 cm, pliant, gradually tapering toward tip.</span> <span class="statement" id="st-d0_s3" data-properties="velum position relational;velum quantity"><b>Velum </b>covering less than 1/2 of sporangium.</span> <span class="statement" id="st-d0_s4" data-properties="sporangium wall coloration"><b>Sporangium </b>wall ± brown-streaked.</span> <span class="statement" id="st-d0_s5" data-properties="megaspore coloration;megaspore diameter;megaspore architecture;megaspore shape;spine fragility or size;spine shape"><b>Megaspores </b>whtie, 380–600 μm diam., echinate to short-cristate with stout blunt spines and crests;</span> <span class="statement" id="st-d0_s6" data-properties="girdle architecture">girdle densely echinate.</span> <span class="statement" id="st-d0_s7" data-properties=""><b>Microspores </b>gray to brown in mass, 30–40 μm, papillose.</span> <span class="statement" id="st-d0_s8" data-properties="microspore coloration;microspore some measurement;microspore relief;2n chromosome quantity">2n = 44.</span><!--

-->{{Treatment/Body
|phenology=Spores mature late summer.
|habitat=Lakes and streams
|distribution=B.C.;Alaska;Wash.
|discussion=<p>Isoëtes maritima hybridizes with I. echinospora and I. occidentalis [ = I. truncata (A. A. Eaton) Clute].</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Isoëtes maritima
|authority=L. Underwood
|rank=species
|parent rank=genus
|synonyms=Isoëtes beringgensis;Isoëtes echinospora subsp. maritima;Isoëtes echinospora var. maritima;Isoëtes macounii
|basionyms=
|family=Isoëtaceae
|phenology=Spores mature late summer.
|habitat=Lakes and streams
|distribution=B.C.;Alaska;Wash.
|reference=None
|publication title=Bot. Gaz.
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V2/V2_556.xml
|genus=Isoëtes
|species=Isoëtes maritima
|2n chromosome quantity=44
|girdle architecture=echinate
|leaf arrangement=arranged
|leaf coloration=pale;bright green
|leaf duration=deciduous
|leaf fragility or texture=pliant
|leaf shape=tapering
|leaf some measurement=0cm;12cm
|megaspore architecture=echinate
|megaspore coloration=whtie
|megaspore diameter=380um;600um
|megaspore shape=short-cristate
|microspore coloration=gray;brown
|microspore relief=papillose
|microspore some measurement=30um;40um
|rootstock shape=2-lobed;globose
|spine fragility or size=stout
|spine shape=blunt
|sporangium wall coloration=brown-streaked
|velum position relational=covering
|velum quantity=0;1/2
|whole_organism growth form=plant
|whole_organism growth form or habitat=aquatic
|whole_organism location=emergent
}}<!--

-->[[Category:Treatment]][[Category:Isoëtes]]