View source for Silphium integrifolium

{{Treatment/ID
|accepted_name=Silphium integrifolium
|accepted_authority=Michaux
|publications={{Treatment/Publication
|title=Fl. Bor.-Amer.
|place=2: 146. 1803
|year=1803
}}
|common_names=Wholeleaf rosinweed
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ecliptinae;Silphium;Silphium integrifolium
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Ecliptinae]]</div><div class="higher-taxon"><small>genus</small>[[Silphium]]</div><div class="higher-taxon"><small>species</small>[[Silphium integrifolium]]</div></div>
|volume=Volume 21
|mention_page=page 77, 78, 81
|treatment_page=page 80
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>caulescent, 40–200 cm; fibrous rooted. <b>Stems</b> terete to slightly square, sparsely scabrous or glabrous (sometimes glaucous). <b>Leaves</b>: basal caducous; cauline opposite, sessile; blades lanceolate to ovate, 2–23 × 0.1–11 cm, bases round to caudate, margins finely serrate or entire, apices acute to acuminate, faces hispid, scabrous, or glabrous. <b>Phyllaries</b> 17–37 in 2–3 series, outer appressed, apices acute to acuminate, abaxial faces glabrous, hispid, pilose, or scabrous, sometimes stipitate-glandular. <b>Ray</b> florets 12–36; corollas yellow. <b>Disc</b> florets 70–225; corollas yellow. <b>Cypselae</b> 9–14 × 6–10 mm; pappi 1–4 mm.</span><!--

-->{{Treatment/Body
|distribution=e North America.
|discussion=<p>Varieties 2 (2 in flora).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Phyllaries: abaxial faces usually hispid, pilose, or scabrous, rarely glabrous; ray florets 12–22
|[[Silphium integrifolium var. integrifolium|Silphium integrifolium var. integrifolium]]
|-id=key-0-1
|1
|Phyllaries: abaxial faces glabrous; ray florets 20–36+
|[[Silphium integrifolium var. laeve|Silphium integrifolium var. laeve]]
|}
</div></div><!--

-->{{#Taxon:
name=Silphium integrifolium
|author=
|authority=Michaux
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=e North America.
|reference=None
|publication title=Fl. Bor.-Amer.
|publication year=1803
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_179.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae
|genus=Silphium
|species=Silphium integrifolium
}}<!--

-->[[Category:Treatment]][[Category:Silphium]]