View source for Penstemon mensarum

{{Treatment/ID
|accepted_name=Penstemon mensarum
|accepted_authority=Pennell
|publications={{Treatment/Publication
|title=Contr. U.S. Natl. Herb.
|place=20: 380. 1920
|year=1920
}}
|common_names=Tiger or Grand Mesa beardtongue
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Plantaginaceae;Penstemon;Penstemon subg. Penstemon;Penstemon sect. Glabri;Penstemon mensarum
|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. Glabri]]</div><div class="higher-taxon"><small>species</small>[[Penstemon mensarum]]</div></div>
|volume=Volume 17
|mention_page=page 158, 168, 173, 181
|treatment_page=page 172
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="stem orientation;stem some measurement;stem pubescence;stem pubescence;stem pubescence"><b>Stems </b>erect, 25–90 cm, glabrous, slightly glaucous or not.</span> <span class="statement" id="st-d0_s1" data-properties=""><b>Leaves </b>basal and cauline, not leathery, glabrous, not glaucous;</span> <span class="statement" id="st-d0_s2" data-properties="leaf position;leaf position;leaf texture;leaf pubescence;leaf pubescence;leaf position;whole-organism position;whole-organism position;blade shape;base shape;margin architecture or shape;apex shape">basal and proximal cauline 28–145 × 4–30 mm, blade oblong to oblanceolate or elliptic, base tapered, margins entire, apex acute;</span> <span class="statement" id="st-d0_s3" data-properties="cauline blade quantity;cauline blade architecture;cauline blade architecture;cauline blade length;cauline blade width;blade shape;proximal shape;base shape;base architecture or fixation;apex shape">cauline 2–4 (or 5) pairs, sessile, rarely short-petiolate, 20–135 × 4–31 mm, blade lanceolate, proximals sometimes oblanceolate, base tapered to cordate-clasping, apex acute to acuminate.</span> <span class="statement" id="st-d0_s4" data-properties="thyrse architecture;thyrse architecture;thyrse some measurement;axis pubescence;verticillaster quantity;cyme architecture;cyme quantity"><b>Thyrses </b>interrupted, secund, 10–56 cm, axis ± glandular-pubescent at least distally, verticillasters 4–12, cymes (1 or) 2–6-flowered, 2 per node;</span> <span class="statement" id="st-d0_s5" data-properties="proximal bract shape;proximal bract length;proximal bract width">proximal bracts lanceolate, 10–58 × 10–85 mm;</span> <span class="statement" id="st-d0_s6" data-properties="peduncle pubescence;pedicel pubescence">peduncles and pedicels glandular-pubescent, sometimes sparsely so.</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 oblong-ovate, 3.5–5.8 × 1.2–2.1 mm, glandular-pubescent;</span> <span class="statement" id="st-d0_s8" data-properties="corolla coloration;corolla shape;corolla some measurement;corolla pubescence;corolla pubescence;corolla pubescence;nectar guide prominence;nectar guide coloration;tube some measurement;throat shape;throat size;throat diameter;throat shape">corolla blue to purple or violet, with faint reddish purple nectar guides, ventricose, 16–25 mm, ± glandular-pubescent externally, glabrous or sparsely glandular internally, tube 5–8 mm, throat gradually inflated, not constricted at orifice, 6–10 mm diam., rounded abaxially;</span> <span class="statement" id="st-d0_s9" data-properties="stamen position;pollen-sac arrangement;pollen-sac shape;pollen-sac distance;pollen-sac dehiscence;connective architecture or dehiscence;side pubescence;hair coloration;hair coloration;hair some measurement;suture relief;suture shape;tooth some measurement">stamens included, pollen-sacs divergent to nearly opposite, navicular, 0.8–1.4 mm, dehiscing incompletely, connective not splitting, sides sparsely to moderately hispid, hairs white or yellowish, to 0.2 mm, sutures papillate or denticulate, teeth to 0.1 mm;</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;hair coloration;hair some measurement">staminode 9–11 mm, included, 0.4–0.5 mm diam., tip straight, distal 7–9 mm sparsely to moderately villous, hairs yellow, to 1 mm;</span> <span class="statement" id="st-d0_s11" data-properties="style some measurement">style 9–11 mm.</span> <span class="statement" id="st-d0_s12" data-properties="capsule length;capsule width"><b>Capsules </b>8–10 × 4–6 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Sagebrush shrublands, openings in aspen woodlands.
|elevation=2200–3000 m.
|distribution=Colo.
|discussion=<p>Penstemon mensarum is known from Delta, Gunnison, Mesa, Montrose, and Pitkin counties.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Penstemon mensarum
|authority=Pennell
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Plantaginaceae
|phenology=Flowering Jun–Aug.
|habitat=Sagebrush shrublands, openings in aspen woodlands.
|elevation=2200–3000 m.
|distribution=Colo.
|reference=None
|publication title=Contr. U.S. Natl. Herb.
|publication year=1920
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V17/V17_427.xml
|genus=Penstemon
|subgenus=Penstemon subg. Penstemon
|section=Penstemon sect. Glabri
|species=Penstemon mensarum
|apex shape=acute;acuminate
|axis pubescence=glandular-pubescent
|base architecture or fixation=cordate-clasping
|base shape=tapered;tapered
|blade shape=lanceolate;oblong;oblanceolate or elliptic
|calyx lobe length=3.5mm;5.8mm
|calyx lobe pubescence=glandular-pubescent
|calyx lobe shape=oblong-ovate
|calyx lobe width=1.2mm;2.1mm
|capsule length=8mm;10mm
|capsule width=4mm;6mm
|cauline blade architecture=short-petiolate;sessile
|cauline blade length=20mm;135mm
|cauline blade quantity=2;4
|cauline blade width=4mm;31mm
|connective architecture or dehiscence=not splitting
|corolla coloration=blue;purple or violet
|corolla pubescence=glandular;glabrous;glandular-pubescent
|corolla shape=ventricose
|corolla some measurement=16mm;25mm
|cyme architecture=2-6-flowered
|cyme quantity=2
|distal flower pubescence=villous
|distal flower some measurement=7mm;9mm
|hair coloration=yellow;yellowish;white
|hair some measurement=0mm;1mm
|leaf position=basal;cauline;basal
|leaf pubescence=not glaucous;glabrous
|leaf texture=not leathery
|margin architecture or shape=entire
|nectar guide coloration=reddish purple
|nectar guide prominence=faint
|pedicel pubescence=glandular-pubescent
|peduncle pubescence=glandular-pubescent
|pollen-sac arrangement=divergent;nearly opposite
|pollen-sac dehiscence=dehiscing
|pollen-sac distance=0.8mm;1.4mm
|pollen-sac shape=navicular
|proximal bract length=10mm;58mm
|proximal bract shape=lanceolate
|proximal bract width=10mm;85mm
|proximal shape=oblanceolate
|side pubescence=hispid
|stamen position=included
|staminode diameter=0.4mm;0.5mm
|staminode position=included
|staminode some measurement=9mm;11mm
|stem orientation=erect
|stem pubescence=not;glaucous;glabrous
|stem some measurement=25cm;90cm
|style some measurement=9mm;11mm
|suture relief=papillate
|suture shape=denticulate
|throat diameter=6mm;10mm
|throat shape=rounded;inflated
|throat size=not constricted
|thyrse architecture=secund;interrupted
|thyrse some measurement=10cm;56cm
|tip course=straight
|tooth some measurement=0mm;0.1mm
|tube some measurement=5mm;8mm
|verticillaster quantity=4;12
|whole-organism position=cauline;proximal
}}<!--

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