View source for Geum vernum

{{Treatment/ID
|accepted_name=Geum vernum
|accepted_authority=(Rafinesque) Torrey & A. Gray
|publications={{Treatment/Publication
|title=Fl. N. Amer.
|place=1: 422. 1840
|year=1840
}}
|common_names=Spring avens
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Stylypus vernus
|authority=Rafinesque
|publication_title=Neogenyton,
|publication_place=3. 1825
}}
|synonyms=
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Colurieae;Geum;Geum vernum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Rosoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Colurieae]]</div><div class="higher-taxon"><small>genus</small>[[Geum]]</div><div class="higher-taxon"><small>species</small>[[Geum vernum]]</div></div>
|volume=Volume 9
|mention_page=page 61
|treatment_page=page 70
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>leafy-stemmed. <b>Stems</b> 20–70 cm, pilose or sparsely pilose, hairs septate. <b>Leaves</b>: basal 4–27 cm, blade simple or pinnate, leaflets 3–11, terminal leaflet larger; cauline 2–7 cm, stipules ± free, 8–25 × 7–12 mm, blade pinnate to 3-foliolate. <b>Inflorescences</b> 3–13-flowered. <b>Pedicels</b> glandular-downy, becoming glabrate in fruit. <b>Flowers</b> erect; epicalyx bractlets absent; hypanthium green; sepals reflexed, 1–3 mm; petals spreading, yellow to cream, oblong to elliptic, sometimes obovate, 1–2 mm, equal to or shorter than sepals, apex rounded. <b>Fruiting</b> tori on 3–7 mm stipes, glabrous. <b>Fruiting</b> styles geniculate-jointed, proximal segment persistent, 1.5–3 mm, apex hooked, nearly glabrous except for few septate-glandular hairs, distal segment deciduous, 0.7–1 mm, nearly glabrous except for short hairs. <b>2n</b> = 42.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring.
|habitat=Moist woods, disturbed moist areas, flood plains, openings
|elevation=0–600 m
|distribution=Ont.;Ark.;Del.;D.C.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;Md.;Mass.;Mich.;Mo.;Nebr.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;Tenn.;Va.;W.Va.;Wis.
|discussion=<p><i>Geum vernum</i> is distinctive and is recognized by its early flowering, minute petals, lack of epicalyx bractlets, and heads of achenes soon elevated well beyond the recurved hypanthia and sepals. Recently, it has been expanding its range northward and has been collected with increasing frequency in southern Ontario, Massachusetts, Michigan, New York, and Wisconsin. No specimens could be located to confirm reports of <i>G. vernum</i> from Mississippi or Texas.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Geum vernum
|author=
|authority=(Rafinesque) Torrey & A. Gray
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Stylypus vernus
|family=Rosaceae
|phenology=Flowering spring.
|habitat=Moist woods, disturbed moist areas, flood plains, openings
|elevation=0–600 m
|distribution=Ont.;Ark.;Del.;D.C.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;Md.;Mass.;Mich.;Mo.;Nebr.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;Tenn.;Va.;W.Va.;Wis.
|reference=None
|publication title=Fl. N. Amer.
|publication year=1840
|special status=Endemic;Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V9/V9_103.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Colurieae
|genus=Geum
|species=Geum vernum
}}<!--

-->[[Category:Treatment]][[Category:Geum]]