View source for Penstemon thompsoniae

{{Treatment/ID
|accepted_name=Penstemon thompsoniae
|accepted_authority=(A. Gray) Rydberg
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=36: 690. 1909
|year=1909
}}
|common_names=Thompson’s beardtongue
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Penstemon pumilus var. thompsoniae
|authority=A. Gray in A. Gray et al.
|publication_title=Syn. Fl. N. Amer.
|publication_place=2(1): 269. 1878
}}
|synonyms={{Treatment/ID/Synonym
|name=P. thompsoniae var. desperatus
|authority=Neese
}} {{Treatment/ID/Synonym
|name=P. thompsoniae subsp. jaegeri
|authority=D. D. Keck
}}
|hierarchy=Plantaginaceae;Penstemon;Penstemon subg. Penstemon;Penstemon sect. Caespitosi;Penstemon thompsoniae
|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. Caespitosi]]</div><div class="higher-taxon"><small>species</small>[[Penstemon thompsoniae]]</div></div>
|volume=Volume 17
|mention_page=page 99, 108
|treatment_page=page 107
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>prostrate or ascending, 4–15(–25) cm, retrorsely hairy, hairs appressed, white, scalelike. <b>Leaves</b> not leathery, densely retrorsely hairy, hairs appressed, white, scalelike; cauline 1–5 pairs, petiolate, 6–25(–33) × 2–6.5 mm, blade obovate to spatulate, base tapered, apex mucronate, sometimes rounded or obtuse. <b>Thyrses</b> continuous, secund, (1–)2–12 cm, axis retrorsely hairy, hairs appressed, white, scalelike, sometimes also glandular-pubescent distally, verticillasters (1–)3–12, cymes 1–3(–5)-flowered, 1 per node; proximal bracts spatulate to oblanceolate, 5–19 × 1.5–4 mm; peduncles and pedicels spreading to ascending, retrorsely hairy, hairs pointed, and, sometimes, sparsely glandular-pubescent. <b>Flowers</b>: calyx lobes lanceolate, 4–6 × 1–1.7 mm, herbaceous- or narrowly scarious-margined, sparsely glandular-pubescent and retrorsely hairy, hairs appressed, white, scalelike; corolla blue to violet or purple, lined internally abaxially with reddish violet nectar guides, ampliate, 10–18 mm, yellow-lanate internally abaxially, tube 6–7 mm, throat gradually inflated, 4.5–6 mm diam., 2-ridged abaxially; stamens reaching orifice or longer pair exserted, filaments glabrous, pollen sacs divergent, navicular, 0.8–1.2(–1.4) mm, sutures papillate; staminode 8–9 mm, exserted, flattened distally, 0.2–0.3 mm diam., tip recurved, distal 6–8 mm pubescent, hairs yellow or orange, to 0.8 mm; style 10–13 mm. <b>Capsules</b> 3.5–5.5 × 3–4 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Aug.
|habitat=Sandy to gravelly soils, sagebrush shrublands, pine-juniper woodlands, pine forests.
|elevation=1500–3400 m.
|distribution=Ariz.;Calif.;Nev.;Utah.
|discussion=<p>D. D. Keck (1937) recognized two subspecies in his treatment of <i>Penstemon thompsoniae</i>: subsp. jaegeri, restricted to mountains of Clark County, <i>Nevada</i>, which he distinguished by its few, remote stems and open inflorescences, and subsp. thompsoniae in Arizona, <i>Nevada</i>, and Utah, which he distinguished by its tufted stems and compact inflorescences. A morphologic continuum exists between the two subspecies.</p><!--
--><p>Neese described var. desperatus from Beaver and Iron counties, Utah, and eastern <i>Nevada</i>, distinguishing it from <i></i></i>var.<i><i> thompsoniae</i> by its longer stems and inflorescences, and smaller leaves. She later concluded that geographic variation in <i>Penstemon thompsoniae</i> was not sufficiently geographically correlated to recognize infraspecific taxa (E. C. Neese 1993).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Penstemon thompsoniae
|author=
|authority=(A. Gray) Rydberg
|rank=species
|parent rank=section
|synonyms=P. thompsoniae var. desperatus;P. thompsoniae subsp. jaegeri
|basionyms=Penstemon pumilus var. thompsoniae
|family=Plantaginaceae
|phenology=Flowering May–Aug.
|habitat=Sandy to gravelly soils, sagebrush shrublands, pine-juniper woodlands, pine forests.
|elevation=1500–3400 m.
|distribution=Ariz.;Calif.;Nev.;Utah.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1909
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V17/V17_285.xml
|genus=Penstemon
|subgenus=Penstemon subg. Penstemon
|section=Penstemon sect. Caespitosi
|species=Penstemon thompsoniae
}}<!--

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