View source for Wolffia borealis

{{Treatment/ID
|accepted_name=Wolffia borealis
|accepted_authority=(Engelmann) Landolt
|publications={{Treatment/Publication
|title=Ber. Geobot. Inst. ETH Stiftung Rubel
|place=44:137. 1977
|year=1977
}}
|common_names=Wolffie boréale
|basionyms={{Treatment/ID/Basionym
|name=Wolffia brasiliensis var. borealis
|authority=Engelmann
|publication_title=in C. F. Hegelmaier, Lemnac.,
|publication_place=127. 1868
}}
|synonyms=
|hierarchy=Lemnaceae;Wolffia;Wolffia borealis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Lemnaceae]]</div><div class="higher-taxon"><small>genus</small>[[Wolffia]]</div><div class="higher-taxon"><small>species</small>[[Wolffia borealis]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=page 152
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Fronds </b>boat-shaped, 0.7–1.5 mm, 1.3–2 times as long as wide, 0.7–1 times as deep as wide, with point at apex bent upward; papilla absent; upper surface intensely green, with 50–100 stomates; pigment cells present in vegetative tissue (visible in dead fronds as brown dots). <b>2n</b> = 20, 22, 30, 40.</span><!--

-->{{Treatment/Body
|phenology=Flowering (very rare) summer–early fall.
|habitat=Mesotrophic to eutrophic, quiet waters in temperate regions
|elevation=0–1400 m
|distribution=Alta.;B.C.;Ont.;Que.;Calif.;Colo.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H.;N.Y.;Ohio;Okla.;Oreg.;Pa.;S.Dak.;Tenn.;Utah;Vt.;Wash.;Wis.
|discussion=<p>The name <i>Wolffia</i> punctata has been applied to this species in error.</p><!--
--><p>I know of no specimens of <i>Wolffia borealis</i> from Rhode Island.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Wolffia borealis
|author=
|authority=(Engelmann) Landolt
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Wolffia brasiliensis var. borealis
|family=Lemnaceae
|phenology=Flowering (very rare) summer–early fall.
|habitat=Mesotrophic to eutrophic, quiet waters in temperate regions
|elevation=0–1400 m
|distribution=Alta.;B.C.;Ont.;Que.;Calif.;Colo.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H.;N.Y.;Ohio;Okla.;Oreg.;Pa.;S.Dak.;Tenn.;Utah;Vt.;Wash.;Wis.
|reference=None
|publication title=Ber. Geobot. Inst. ETH Stiftung Rubel
|publication year=1977
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V22/V22_22.xml
|genus=Wolffia
|species=Wolffia borealis
}}<!--

-->[[Category:Treatment]][[Category:Wolffia]]