View source for Isoëtes georgiana

{{Treatment/ID
|accepted_name=Isoëtes georgiana
|accepted_authority=Luebke
|publications={{Treatment/Publication
|title=Amer. Fern. J.
|place=82: 24. 1992
|year=1992
}}
|common_names=Georgia quillwort
|basionyms=
|synonyms=
|hierarchy=Isoëtaceae;Isoëtes;Isoëtes georgiana
|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 georgiana]]</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>Plants </b>aquatic, 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, olive green, pale toward base, spirally arranged, to 40 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 that 3/4 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 shape;megaspore architecture or coloration or relief;ridge width;ridge shape"><b>Megaspores </b>white, 450–650 μm diam., cristate to reticulate with broad, jagged ridges;</span> <span class="statement" id="st-d0_s6" data-properties="girdle prominence">girdle obscure.</span> <span class="statement" id="st-d0_s7" data-properties=""><b>Microspores </b>light-brown in mass, 23–33 μm, papillose.</span> <span class="statement" id="st-d0_s8" data-properties="microspore coloration;microspore some measurement;microspore relief;2n chromosome quantity">2n = 66.</span><!--

-->{{Treatment/Body
|phenology=Spores mature late summer.
|habitat=Creeks
|distribution=Ga.
|discussion=<p>Isoëtes georgiana is known only from Worth County, Georgia. An early collection from this locality was reported by B. M. Boom (1982) to be I. engelmannii x piedmontana, but the broad velum and bold texture of the megaspores suggest a possible involvement of I. flaccida.</p><!--
--><p>Of conservation concern.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Isoëtes georgiana
|authority=Luebke
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Isoëtaceae
|phenology=Spores mature late summer.
|habitat=Creeks
|distribution=Ga.
|reference=None
|publication title=Amer. Fern. J.
|publication year=1992
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V2/V2_309.xml
|genus=Isoëtes
|species=Isoëtes georgiana
|2n chromosome quantity=66
|girdle prominence=obscure
|leaf arrangement=arranged
|leaf coloration=pale;olive green
|leaf duration=deciduous
|leaf fragility or texture=pliant
|leaf shape=tapering
|leaf some measurement=0cm;40cm
|megaspore architecture or coloration or relief=reticulate
|megaspore coloration=white
|megaspore diameter=450um;650um
|megaspore shape=cristate
|microspore coloration=light-brown
|microspore relief=papillose
|microspore some measurement=23um;33um
|ridge shape=jagged
|ridge width=broad
|rootstock shape=2-lobed;globose
|sporangium wall coloration=brown-streaked
|velum position relational=covering
|velum quantity=3/4
|whole_organism growth form=plant
|whole_organism growth form or habitat=aquatic
|whole_organism location=emergent
}}<!--

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