View source for Isoëtes melanopoda

{{Treatment/ID
|accepted_name=Isoëtes melanopoda
|accepted_authority=Gay & Durieu
|publications={{Treatment/Publication
|title=Bull. Soc. Bot. France
|place=11: 102. 1864
|year=1864
}}
|common_names=Black-footed quillwort
|basionyms=
|synonyms=
|hierarchy=Isoëtaceae;Isoëtes;Isoëtes melanopoda
|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 melanopoda]]</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 growth form"><b>Plants </b>terrestrial or becoming so.</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 to lustrous black toward base, spirally arranged, to 40 cm, pliant, tapering gradually to tip.</span> <span class="statement" id="st-d0_s3" data-properties="sporangium quantity"><b>Velum </b>covering less than 3/4 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 relief;megaspore relief;megaspore relief;ridge position"><b>Megaspores </b>white, 280–440 μm diam., obscurely rugulate with low ridges, rarely tuberculate or reticulate;</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>gray in mass, 20–30 μm, spinulose.</span> <span class="statement" id="st-d0_s8" data-properties="microspore coloration;microspore some measurement;microspore architecture or shape;2n chromosome quantity">2n = 22.</span><!--

-->{{Treatment/Body
|phenology=Spores mature in late spring.
|habitat=Noncalcareous soil, meadows, fields, ditches, soil pockets on rock outcrops
|distribution=Ark.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Minn.;Miss.;Mo.;Nebr.;N.J.;N.C.;Okla.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.
|discussion=<p>Population of Isoëtes melanopoda in New Jersey, North Carolina, South Carolina, Utah, and Virginia are disjunct.</p><!--
--><p>Plants of Isoëtes melanopoda with black leaf bases are typical. Plants without black leaf bases have been called I. melanopoda f. pallida (Engelmann) Fernald. Variation also occurs in megaspore morphology. A collection from Dallas County, Texas, has lustrous black leaf bases and boldly rugulate spores with ridges that occasionally anastomose. In many respects, I. melanopoda is similar to I. howellii.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Isoëtes melanopoda
|authority=Gay & Durieu
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Isoëtaceae
|phenology=Spores mature in late spring.
|habitat=Noncalcareous soil, meadows, fields, ditches, soil pockets on rock outcrops
|distribution=Ark.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Minn.;Miss.;Mo.;Nebr.;N.J.;N.C.;Okla.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.
|reference=None
|publication title=Bull. Soc. Bot. France
|publication year=1864
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V2/V2_482.xml
|genus=Isoëtes
|species=Isoëtes melanopoda
|2n chromosome quantity=22
|girdle prominence=obscure
|leaf arrangement=arranged
|leaf coloration=pale;lustrous black
|leaf duration=deciduous
|leaf fragility or texture=pliant
|leaf shape=tapering
|leaf some measurement=0cm;40cm
|megaspore coloration=white
|megaspore diameter=280um;440um
|megaspore relief=reticulate;tuberculate;rugulate
|microspore architecture or shape=spinulose
|microspore coloration=gray
|microspore some measurement=20um;30um
|ridge position=low
|rootstock shape=2-lobed;globose
|sporangium quantity=0;3/4
|sporangium wall coloration=brown-streaked
|whole_organism growth form=plant
|whole_organism growth form or habitat=terrestrial
}}<!--

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