View source for Silphium terebinthinaceum

{{Treatment/ID
|accepted_name=Silphium terebinthinaceum
|accepted_authority=Jacquin
|publications={{Treatment/Publication
|title=Hort. Bot. Vindob.
|place=1: 16, plate 43. 1770
|year=1770
}}
|common_names=Prairie-dock
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ecliptinae;Silphium;Silphium terebinthinaceum
|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 terebinthinaceum]]</div></div>
|volume=Volume 21
|mention_page=page 77
|treatment_page=page 78
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>scapiform, (40–)100–250+ cm; taprooted. <b>Stems</b> terete, glabrous. <b>Leaves</b>: basal persistent, petiolate; cauline alternate, petiolate or sessile; blades cordate, deltate, lanceolate, ovate, or sagittate, 3–40 × 1–40 cm, sometimes (proximal) pinnately lobed, bases attenuate, cordate, hastate, round, or truncate, ultimate margins coarsely toothed or entire, apices acuminate, acute, or obtuse, faces glabrous or scabrous. <b>Phyllaries</b> 23–33 in 2–3 series, outer appressed, apices obtuse to acute, abaxial faces glabrous. <b>Ray</b> florets 17–29; corollas yellow. <b>Disc</b> florets 120–140; corollas yellow. <b>Cypselae</b> 7–13 × 4–10 mm; pappi 0–1 mm.</span><!--

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

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves pinnately lobed
|[[Silphium terebinthinaceum var. pinnatifidum|Silphium terebinthinaceum var. pinnatifidum]]
|-id=key-0-1
|1
|Leaves not lobed
|[[Silphium terebinthinaceum var. terebinthinaceum|Silphium terebinthinaceum var. terebinthinaceum]]
|}
</div></div><!--

-->{{#Taxon:
name=Silphium terebinthinaceum
|author=
|authority=Jacquin
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=e North America.
|reference=None
|publication title=Hort. Bot. Vindob.
|publication year=1770
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_171.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae
|genus=Silphium
|species=Silphium terebinthinaceum
}}<!--

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