View source for Isoëtes tuckermanii

{{Treatment/ID
|accepted_name=Isoëtes tuckermanii
|accepted_authority=A. Braun ex Engelmann in A. Gray
|publications={{Treatment/Publication
|title=in A. Gray,Manual ed. 5
|place=676. 1867
|year=1867
}}
|common_names=Tuckerman's quillwort;isoète de Tuckerman
|basionyms=
|synonyms=
|hierarchy=Isoëtaceae;Isoëtes;Isoëtes tuckermanii
|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 tuckermanii]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>aquatic, occasionally emergent. <b>Rootstock</b> nearly globose 2(–3)-lobed. <b>Leaves</b> evergreen, olive green to reddish brown, pale toward base, spirally arranged, to 20 cm, pliant to rigid, gradually tapering to tip. <b>Velum</b> covering less than 1/2 of sporangium. <b>Sporangium</b> wall brown-streaked. <b>Megaspores</b> white, 450–650 μm diam., reticulate with ridges having irregular and roughened crests; girdle densely papillate. <b>Microspores</b> gray in mass, 25–35 μm, spinulose. <b>2n</b> = 44.</span><!--

-->{{Treatment/Body
|phenology=Spores mature in late summer.
|habitat=Slightly acid lakes, ponds, and streams
|distribution=N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Conn.;Maine;Mass.;N.H.;N.J.;N.Y.;R.I.;Vt.
|discussion=<p><i>Isoëtes tuckermanii</i> may be an allotetraploid like <i>I. riparia</i>, but it appears to have had different parental species. Variation may also have resulted from multiple allotetraploid origins. Typical plants of <i>I. tuckermanii</i> have thin, soft leaves. More northern plants, referred to as <i>I. tuckermanii</i> <i></i>var.<i> borealis</i> A. A. Eaton, have thick, stiff leaves.</p><!--
--><p><i>Isoëtes tuckermanii</i> hybridizes with <i>I. echinospora</i>; <i>I. engelmannii</i> [ = I. x foveolata A. A. Eaton ex Dodge]; and <i>I. lacustris</i> [ = I. x harveyi A. A. Eaton].</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Isoëtes tuckermanii
|authority=A. Braun ex Engelmann in A. Gray
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Isoëtaceae
|phenology=Spores mature in late summer.
|habitat=Slightly acid lakes, ponds, and streams
|distribution=N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Conn.;Maine;Mass.;N.H.;N.J.;N.Y.;R.I.;Vt.
|reference=None
|publication title=in A. Gray,Manual ed. 5
|publication year=1867
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V2/V2_671.xml
|genus=Isoëtes
|species=Isoëtes tuckermanii
}}<!--

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