View source for Echinodorus tenellus

{{Treatment/ID
|accepted_name=Echinodorus tenellus
|accepted_authority=(Martius) Buchenau
|publications={{Treatment/Publication
|title=Index Crit. Butom. Alism. Juncagin.
|place=21. 1868
|year=1868
}}
|basionyms={{Treatment/ID/Basionym
|name=Alisma tenellum
|authority=Martius
|rank=species
|publication_title=in J. J. Roemer and J. A. Schultes, Syst. Veg.
|publication_place=7(2): 1600. 1830
}}
|synonyms={{Treatment/ID/Synonym
|name=Echinodorus parvulus
|authority=Engelmann
|rank=species
}} {{Treatment/ID/Synonym
|name=Echinodorus tenellus var. parvulus
|authority=(Engelmann) Fassett
|rank=variety
}} {{Treatment/ID/Synonym
|name=Helianthium parvulum
|authority=
|rank=species
}}
|hierarchy=Alismataceae;Echinodorus;Echinodorus tenellus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Alismataceae]]</div><div class="higher-taxon"><small>genus</small>[[Echinodorus]]</div><div class="higher-taxon"><small>species</small>[[Echinodorus tenellus]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual, relatively slender, to 25 cm; rhizomes absent. <b>Leaves</b>: submersed leaves mostly present, sessile; emersed leaves with petioles 4–5-ridged, 1.2–9.5 cm; blade with translucent markings absent, linear, 1–7.4 × 0.2–0.5 cm, base attenuate; if emersed, narrowly lanceolate to ovate. <b>Inflorescences</b> umbels, rarely racemes, of 1–2 whorls, each 4–6-flowered, erect, to 6 × 8 cm, not proliferating; peduncles terete, 1.2–4 cm; rachis absent or if present, terete; bracts connate ca. ½ length, deltate, 2.8–4.9 mm, coarse, margins delicate; pedicels spreading, 0.5–3 cm. <b>Flowers</b> 6–8 mm wide; sepals slightly appressed, 3–5-veined, veins not papillate; petals clawed; stamens 9; anthers basifixed; pistils 15–20. <b>Fruits</b> obovate, flattened, 0–3-ribbed, not abaxially keeled, 0.8–1.5 × 0.8–1 mm, glands absent; beak lateral, 0.1–0.2 mm. <b>Chromosome</b> number unknown.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Sandy soil along margins of small streams or lakes
|elevation=0–1500 m
|distribution=Ala.;Conn.;Fla.;Ga.;Ill.;Kans.;Mass.;Mich.;N.Y.;S.C.;Tex.;Vt.;se Mexico;West Indies;Central America (Guatemala;Nicaragua);South America.
|discussion=<p><i>Echinodorus tenellus</i> has often been separated into two species, one in North America and the other in the tropics. Whenever <i>Echinodorus</i> is studied throughout the range, differences between the two species break down, and a continuum exists from one species to the next. We recognize that overlap; therefore we are combining E. parvulus with <i>E. tenellus</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Echinodorus tenellus
|authority=(Martius) Buchenau
|rank=species
|parent rank=genus
|synonyms=Echinodorus parvulus;Echinodorus tenellus var. parvulus;Helianthium parvulum
|basionyms=Alisma tenellum
|family=Alismataceae
|phenology=Flowering summer–fall.
|habitat=Sandy soil along margins of small streams or lakes
|elevation=0–1500 m
|distribution=Ala.;Conn.;Fla.;Ga.;Ill.;Kans.;Mass.;Mich.;N.Y.;S.C.;Tex.;Vt.;se Mexico;West Indies;Central America (Guatemala;Nicaragua);South America.
|reference=None
|publication title=Index Crit. Butom. Alism. Juncagin.
|publication year=1868
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V22/V22_403.xml
|genus=Echinodorus
|species=Echinodorus tenellus
}}<!--

-->[[Category:Treatment]][[Category:Echinodorus]]