View source for Penstemon gracilis

{{Treatment/ID
|accepted_name=Penstemon gracilis
|accepted_authority=Nuttall
|publications={{Treatment/Publication
|title=Gen. N. Amer. Pl.
|place=2: 52. 1818
|year=1818
}}
|common_names=Lilac or slender beardtongue
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Penstemon gracilis subsp. wisconsinensis
|authority=Pennell
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=P. gracilis var. wisconsinensis
|authority=(Pennell) Fassett
|rank=variety
}}
|hierarchy=Plantaginaceae;Penstemon;Penstemon subg. Penstemon;Penstemon sect. Penstemon;Penstemon gracilis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Plantaginaceae]]</div><div class="higher-taxon"><small>genus</small>[[Penstemon]]</div><div class="higher-taxon"><small>subgenus</small>[[Penstemon subg. Penstemon]]</div><div class="higher-taxon"><small>section</small>[[Penstemon sect. Penstemon]]</div><div class="higher-taxon"><small>species</small>[[Penstemon gracilis]]</div></div>
|volume=Volume 17
|mention_page=page 185, 188, 206
|treatment_page=page 205
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs.</b> Caudex herbaceous. <b>Stems</b> ascending to erect, (15–)20–50 cm, retrorsely hairy and glandular-pubescent, not glaucous. <b>Leaves</b> basal and cauline, not leathery, glabrous or sparsely, rarely densely, puberulent; basal and proximal cauline 25–75 × 4–15 mm, blade ovate to oblanceolate or lanceolate, base tapered, margins subentire or ± serrate, apex obtuse to acute; cauline 4–7 pairs, sessile, 25–80(–90) × (2–)4–10(–15) mm, blade lanceolate to linear, base truncate to clasping, margins entire or serrulate to serrate, apex acute to acuminate. <b>Thyrses</b> interrupted, sometimes continuous, cylindric, (3–)5–17(–21) cm, axis glandular-pubescent, verticillasters (2 or)3–5(–7), cymes 2–6-flowered, 2 per node; proximal bracts lanceolate, 5–95 × 1–12 mm, margins entire or serrulate, rarely serrate; peduncles and pedicels ascending to erect, glandular-pubescent. <b>Flowers</b>: calyx lobes ovate to lanceolate, 4–6 × 1.5–2 mm, glandular-pubescent; corolla light lavender to lavender, with violet nectar guides, tubular, 14–22 mm, glandular-pubescent externally, moderately white-pilose internally abaxially, tube 4–6 mm, throat slightly inflated, 4–6 mm diam., prominently 2-ridged abaxially; stamens included, pollen sacs divergent, navicular, 1–1.3 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate; staminode 11–12 mm, reaching orifice, 0.4–0.5 mm diam., tip slightly recurved, distal 7–9 mm densely villous, hairs golden yellow, to 1.5 mm; style 9–12 mm. <b>Capsules</b> 6–8 × 3–4 mm, glabrous. <b>2n</b> = 16.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Aug.
|habitat=Tallgrass, mixed grass, and shortgrass prairies, foothills.
|elevation=300–2100 m.
|distribution=Alta.;B.C.;Man.;Ont.;Sask.;Colo.;Ill.;Ind.;Iowa;Mich.;Minn.;Mont.;Nebr.;N.Mex.;N.Dak.;S.Dak.;Wis.;Wyo.
|discussion=<p>Glabrous-leaved plants are characteristic on the prairies of most of the central and northern Great Plains, and in the foothills of the Central, Northern, and Canadian Rocky mountains. Puberulent-leaved plants from the Driftless Area of Wisconsin have been named var. wisconsinensis. Puberulent-leaved plants also occur in Alberta and in North Dakota (specimens from Barnes, Benton, Eddy, Pierce, Ramsey, Wells, and Williams counties have been seen), sometimes with glabrous-leaved plants. <i>Penstemon gracilis</i> is introduced in Indiana (K. Yatskievych 2000).</p><!--
--><p>The roots of <i>Penstemon gracilis</i> are used by the Lakota of the northern Great Plains for protection from snakebites (D. E. Moerman 1998).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Penstemon gracilis
|authority=Nuttall
|rank=species
|parent rank=section
|synonyms=Penstemon gracilis subsp. wisconsinensis;P. gracilis var. wisconsinensis
|basionyms=
|family=Plantaginaceae
|phenology=Flowering May–Aug.
|habitat=Tallgrass, mixed grass, and shortgrass prairies, foothills.
|elevation=300–2100 m.
|distribution=Alta.;B.C.;Man.;Ont.;Sask.;Colo.;Ill.;Ind.;Iowa;Mich.;Minn.;Mont.;Nebr.;N.Mex.;N.Dak.;S.Dak.;Wis.;Wyo.
|reference=None
|publication title=Gen. N. Amer. Pl.
|publication year=1818
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V17/V17_492.xml
|genus=Penstemon
|subgenus=Penstemon subg. Penstemon
|section=Penstemon sect. Penstemon
|species=Penstemon gracilis
}}<!--

-->[[Category:Treatment]][[Category:Penstemon sect. Penstemon]]