View source for Penstemon platyphyllus

{{Treatment/ID
|accepted_name=Penstemon platyphyllus
|accepted_authority=Rydberg
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=36: 690. 1909
|year=1909
}}
|common_names=Broad-leaf beardtongue
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Penstemon heterophyllus var. latifolius
|authority=S. Watson
|rank=variety
|publication_title=Botany (Fortieth Parallel),
|publication_place=222. 1871
}}
|synonyms=
|hierarchy=Plantaginaceae;Penstemon;Penstemon subg. Penstemon;Penstemon sect. Saccanthera;Penstemon platyphyllus
|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. Saccanthera]]</div><div class="higher-taxon"><small>species</small>[[Penstemon platyphyllus]]</div></div>
|volume=Volume 17
|mention_page=page 229, 230, 240
|treatment_page=page 239
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs </b>or subshrubs. <b>Stems</b> ascending to erect, (15–)35–60 cm, retrorsely hairy, hairs pointed, at least proximally, not glaucous. <b>Leaves</b> cauline, opposite, glabrous, glaucous; cauline 4–8 pairs, short-petiolate or sessile, (15–)20–60 × (2–)6–13(–20) mm, blade elliptic or proximals oblanceolate to lanceolate, base tapered, margins entire, apex obtuse to acute. <b>Thyrses</b> continuous, cylindric, 5–22 cm, axis glabrous or retrorsely hairy, verticillasters 4–8(–11), cymes 1- or 2(–4)-flowered, 2 per node; proximal bracts lanceolate to elliptic, 8–66 × 1–13 mm; peduncles and pedicels ascending to erect, peduncles glabrous or sparsely retrorsely hairy, pedicels papillate or glandular distally. <b>Flowers</b>: calyx lobes lanceolate, 4–6(–7) × 1.4–2.6 mm, glabrous; corolla lavender to light violet or violet, with or without faint lavender nectar guides, ventricose-ampliate, (20–)22–25(–30) mm, glabrous externally, glabrous internally, tube 6–8 mm, throat gradually inflated, 7–9 mm diam., 2-ridged abaxially; stamens: longer pair exserted, filaments glabrous, pollen sacs parallel, 1.5–1.9(–2.1) mm, distal 1/2–2/3 indehiscent, sides glabrous or hispidulous to lanate, hairs white, to 0.5 mm, sutures denticulate, teeth to 0.2 mm; staminode 12–14 mm, reaching orifice or exserted, 0.6–0.8 mm diam., glabrous; style 18–20 mm. <b>Capsules</b> 7–11 × 3.5–4.5 mm. <b>2n</b> = 32.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Talus slopes, rocky canyons, foothills.
|elevation=1400–2400 m.
|distribution=Utah.
|discussion=<p><i>Penstemon platyphyllus</i> is known from the Wasatch Mountains in Davis, Salt Lake, Utah, and Weber counties, with one somewhat isolated population in Indian Canyon in extreme southwestern Duchesne County. Reports of <i>P. platyphyllus</i> from White Pine County, <i>Nevada</i>, are based on a specimen cited by D. D. Keck (1932) that is referable to <i>P. leonardii </i>var.<i> patricus</i>, as are most collections cited by Keck from western Juab and southwestern Tooele counties, Utah.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Penstemon platyphyllus
|authority=Rydberg
|rank=species
|parent rank=section
|synonyms=
|basionyms=Penstemon heterophyllus var. latifolius
|family=Plantaginaceae
|phenology=Flowering Jun–Aug.
|habitat=Talus slopes, rocky canyons, foothills.
|elevation=1400–2400 m.
|distribution=Utah.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1909
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V17/V17_578.xml
|genus=Penstemon
|subgenus=Penstemon subg. Penstemon
|section=Penstemon sect. Saccanthera
|species=Penstemon platyphyllus
}}<!--

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