View source for Prenanthes roanensis

{{Treatment/ID
|accepted_name=Prenanthes roanensis
|accepted_authority=(Chickering) Chickering
|publications={{Treatment/Publication
|title=Bot. Gaz.
|place=6: 191. 1881
|year=1881
}}
|common_names=Roan Mountain rattlesnakeroot
|basionyms={{Treatment/ID/Synonym
|name=Nabalus roanensis
|authority=Chickering
}}
|synonyms={{Treatment/ID/Synonym
|name=Prenanthes cylindrica
|authority=(Small) E. L. Braun
}}
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Prenanthes;Prenanthes roanensis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cichorieae]]</div><div class="higher-taxon"><small>genus</small>[[Prenanthes]]</div><div class="higher-taxon"><small>species</small>[[Prenanthes roanensis]]</div></div>
|volume=Volume 19
|mention_page=page 265
|treatment_page=page 270
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>18–150 cm; taproots slender or short and thickened, tuberous. <b>Stems</b> erect, green or purple, simple, glabrous proximally, crisply tomentulose distally. <b>Leaves</b>: proximal present at flowering; petiolate (petioles not winged or distal narrowly winged); blades ovate, 3–22 × 2–15 cm, coriaceous, bases cordate to truncate or rounded, margins often deeply 3–5-palmately lobed or compound, lobes and sinuses angular, ultimate margins irregularly dentate, apices acute, faces usually finely tomentulose on veins; mid cauline short-petiolate or sessile; distal short-petiolate or sessile, reduced, lanceolate. <b>Heads</b> in narrowly paniculiform or thyrsiform arrays (nodding). <b>Involucres</b> cylindric to narrowly campanulate, 12–14 × 2.5–3 mm. <b>Calyculi</b> of 4–6, blackish green, triangular to lanceolate bractlets 1–3 mm, densely setose. <b>Phyllaries</b> 5–9, green or dark green, apices blackish, linear to oblanceolate, 9–11 mm, sparsely and coarsely setose. <b>Florets</b> 5–7(–13); corollas greenish yellow, 8–10 mm. <b>Cypselae</b> tan to yellow, fusiform, subterete or angled, 4–5 mm, indistinctly 8–12-ribbed; pappi yellow to whitish, 5–6 mm. <b>2n</b> = 16.</span><!--

-->{{Treatment/Body
|phenology=Flowering Aug–Sep.
|habitat=Spruce-hardwood forests, wooded slopes, open grassy summits
|elevation=1600–1700 m
|distribution=N.C.;Tenn.;Va.
|discussion=<p>Of conservation concern.</p><!--
--><p>Prenanthes roanensis is recognized by its 5–7 florets and dark setae on the phyllaries. It is found at mid to high elevations in the Blue Ridge Province of the Appalachian Mountains. It is rather variable and often confused with other species. It is considered rare or threatened throughout its range.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Prenanthes roanensis
|author=
|authority=(Chickering) Chickering
|rank=species
|parent rank=genus
|synonyms=Prenanthes cylindrica
|basionyms=Nabalus roanensis
|family=Asteraceae
|phenology=Flowering Aug–Sep.
|habitat=Spruce-hardwood forests, wooded slopes, open grassy summits
|elevation=1600–1700 m
|distribution=N.C.;Tenn.;Va.
|reference=None
|publication title=Bot. Gaz.
|publication year=1881
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V19_369.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Prenanthes
|species=Prenanthes roanensis
}}<!--

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