View source for Penstemon radicosus

{{Treatment/ID
|accepted_name=Penstemon radicosus
|accepted_authority=A. Nelson
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=25: 280. 1898
|year=1898
}}
|common_names=Mat-root beardtongue
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Plantaginaceae;Penstemon;Penstemon subg. Penstemon;Penstemon sect. Penstemon;Penstemon radicosus
|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 radicosus]]</div></div>
|volume=Volume 17
|mention_page=page 188
|treatment_page=page 219
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form"><b>Herbs.</b></span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem atypical some measurement;stem some measurement;stem pubescence;stem pubescence;stem pubescence"><b>Stems </b>ascending to erect, (15–) 20–42 cm, retrorsely hairy or puberulent, not glaucous.</span> <span class="statement" id="st-d0_s2" data-properties="leaf position;basal leaf presence;basal leaf development;basal leaf texture;basal leaf pubescence"><b>Leaves </b>essentially cauline, basal absent or poorly developed, not leathery, ± puberulent;</span> <span class="statement" id="st-d0_s3" data-properties="cauline leaf quantity;cauline leaf architecture;cauline leaf atypical length;cauline leaf length;cauline leaf atypical width;cauline leaf atypical width;cauline leaf width;blade shape;base shape;margin architecture or shape;apex shape">cauline (4 or) 5–8 pairs, sessile, (20–) 30–65 × (2–) 4–10 (–20) mm, blade ovate to lanceolate, base tapered, margins entire, apex obtuse to acute.</span> <span class="statement" id="st-d0_s4" data-properties="thyrse architecture;thyrse architecture;thyrse shape;thyrse some measurement;axis pubescence;verticillaster quantity;cyme architecture;cyme quantity"><b>Thyrses </b>interrupted or continuous, cylindric, 5–14 cm, axis glandular-pubescent, verticillasters (2 or) 3–6, cymes 2–4 (–8) -flowered, 2 per node;</span> <span class="statement" id="st-d0_s5" data-properties="proximal bract shape;proximal bract length;proximal bract atypical width;proximal bract width;margin architecture or shape">proximal bracts lanceolate to linear, 7–46 × 1–10 (–20) mm, margins entire;</span> <span class="statement" id="st-d0_s6" data-properties="peduncle orientation;peduncle pubescence;pedicel orientation;pedicel pubescence">peduncles and pedicels ascending to erect, glandular-pubescent.</span> <span class="statement" id="st-d0_s7" data-properties="calyx lobe shape;calyx lobe length;calyx lobe width;calyx lobe pubescence"><b>Flowers:</b> calyx lobes lanceolate, 5–8 × 1.2–2.5 mm, glandular-pubescent;</span> <span class="statement" id="st-d0_s8" data-properties="corolla coloration;corolla coloration;corolla coloration;corolla architecture;corolla architecture;corolla some measurement;corolla pubescence;corolla coloration;corolla pubescence;nectar guide coloration;tube some measurement;throat shape;throat diameter;throat shape">corolla blue to dark blue, purple, or violet, with reddish purple nectar guides, bilabiate, not personate, funnelform, 16–23 mm, glandular-pubescent externally, moderately yellowish lanate internally abaxially, tube 4.5–6 mm, throat slightly inflated, 4–6 mm diam., 2-ridged abaxially;</span> <span class="statement" id="st-d0_s9" data-properties="stamen position;pollen-sac arrangement;pollen-sac shape;pollen-sac dehiscence;connective architecture or dehiscence;side pubescence;suture relief">stamens included, pollen-sacs opposite, navicular to subexplanate, 0.8–1.3 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate;</span> <span class="statement" id="st-d0_s10" data-properties="staminode some measurement;staminode position;staminode diameter;tip course;distal flower some measurement;distal flower pubescence;distal flower pubescence;hair coloration;hair some measurement;hair some measurement;hair pubescence;hair coloration;hair some measurement">staminode 10–12 mm, included, 0.3–0.4 mm diam., tip straight, distal 1 mm densely pilose or lanate, hairs yellow, to 1.4 mm, remaining distal 4–5 mm sparsely pilose, hairs yellow, to 0.5 mm;</span> <span class="statement" id="st-d0_s11" data-properties="style some measurement">style 11–14 mm.</span> <span class="statement" id="st-d0_s12" data-properties=""><b>Capsules </b>5–8 × 3.5–5 mm, glabrous.</span> <span class="statement" id="st-d0_s13" data-properties="capsule length;capsule width;capsule pubescence;2n chromosome quantity">2n = 16.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Jul.
|habitat=Rocky flats, slopes, ravines, sagebrush shrublands, pine woodlands.
|elevation=1500–2400 m.
|distribution=Colo.;Idaho;Mont.;Nev.;Utah;Wyo.
|discussion=<p>Penstemon radicosus is known from the Central Rocky Mountains and mountain ranges in the northern Great Basin. The species is most likely to be confused with P. laxus or P. watsonii.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Penstemon radicosus
|authority=A. Nelson
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Plantaginaceae
|phenology=Flowering May–Jul.
|habitat=Rocky flats, slopes, ravines, sagebrush shrublands, pine woodlands.
|elevation=1500–2400 m.
|distribution=Colo.;Idaho;Mont.;Nev.;Utah;Wyo.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1898
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V17/V17_525.xml
|genus=Penstemon
|subgenus=Penstemon subg. Penstemon
|section=Penstemon sect. Penstemon
|species=Penstemon radicosus
|2n chromosome quantity=16
|apex shape=obtuse;acute
|axis pubescence=glandular-pubescent
|basal leaf development=developed
|basal leaf presence=absent
|basal leaf pubescence=puberulent
|basal leaf texture=not leathery
|base shape=tapered
|blade shape=ovate;lanceolate
|calyx lobe length=5mm;8mm
|calyx lobe pubescence=glandular-pubescent
|calyx lobe shape=lanceolate
|calyx lobe width=1.2mm;2.5mm
|capsule length=5mm;8mm
|capsule pubescence=glabrous
|capsule width=3.5mm;5mm
|cauline leaf architecture=sessile
|cauline leaf atypical length=20mm;30mm
|cauline leaf atypical width=10mm;20mm
|cauline leaf length=30mm;65mm
|cauline leaf quantity=5;8
|cauline leaf width=4mm;10mm
|connective architecture or dehiscence=splitting
|corolla architecture=not personate;bilabiate
|corolla coloration=yellowish;blue;dark blue purple or violet
|corolla pubescence=lanate;glandular-pubescent
|corolla some measurement=16mm;23mm
|cyme architecture=2-4(-8)-flowered
|cyme quantity=2
|distal flower pubescence=lanate;pilose
|distal flower some measurement=1
|hair coloration=yellow;yellow
|hair pubescence=pilose
|hair some measurement=0mm;0.5mm
|leaf position=cauline
|margin architecture or shape=entire;entire
|nectar guide coloration=reddish purple
|pedicel orientation=ascending;erect
|pedicel pubescence=glandular-pubescent
|peduncle orientation=ascending;erect
|peduncle pubescence=glandular-pubescent
|pollen-sac arrangement=opposite
|pollen-sac dehiscence=dehiscing
|pollen-sac shape=navicular
|proximal bract atypical width=10mm;20mm
|proximal bract length=7mm;46mm
|proximal bract shape=lanceolate;linear
|proximal bract width=1mm;10mm
|side pubescence=glabrous
|stamen position=included
|staminode diameter=0.3mm;0.4mm
|staminode position=included
|staminode some measurement=10mm;12mm
|stem atypical some measurement=15cm;20cm
|stem orientation=ascending;erect
|stem pubescence=not glaucous;puberulent;hairy
|stem some measurement=20cm;42cm
|style some measurement=11mm;14mm
|suture relief=papillate
|throat diameter=4mm;6mm
|throat shape=2-ridged;inflated
|thyrse architecture=continuous;interrupted
|thyrse shape=cylindric
|thyrse some measurement=5cm;14cm
|tip course=straight
|tube some measurement=4.5mm;6mm
|verticillaster quantity=3;6
|whole_organism growth form=herb
}}<!--

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