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northern smooth beardtongue, smooth penstemon

baccharis-leaf beardtongue

Stems

erect, (10–)18–90(–130) cm, glabrous proximally, usually sparsely glandular distally, not glaucous.

12–50 cm.

Leaves

basal and cauline, not leathery, glabrous, not glaucous;

basal and proximal cauline 35–140(–170) × 8–24 mm, blade oblanceolate, sometimes lanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 3–6(–11) pairs, short-petiolate or sessile, 28–95(–130) × 4–15 mm, blade oblanceolate to lanceolate, base tapered to clasping, apex acute.

cauline 5–15 pairs (distal ones much-reduced), 5–30(–46) × 4–15 mm, blade base tapered to acute to cuneate, margins sharply dentate, especially distally, or entire, apex obtuse to acute.

Thyrses

interrupted, secund, (4–)12–38 cm, axis glabrous or glandular-pubescent, verticillasters 4–12, cymes 1–3(–6)-flowered, 2 per node;

proximal bracts lanceolate, (3–)15–75 × (1–)2–22 mm;

peduncles and pedicels glandular-pubescent, sometimes sparsely so.

(2–)5–15(–40) cm, verticillasters (2 or)3–7(–12), cymes 1- or 2(or 3)-flowered;

proximal bracts elliptic to lanceolate, 2–5 × 1–3 mm;

peduncles and pedicels glandular-pubescent.

Flowers

calyx lobes ovate to lanceolate, 4.5–7.5 × (1.5–)2.1–2.8 mm, glandular-pubescent;

corolla blue to violet or purple, with violet nectar guides, ventricose, 19–28 mm, ± glandular-pubescent externally, glabrous internally, tube 6–10(–11) mm, throat gradually inflated, not constricted at orifice, 7–10 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, navicular, 1.6–2 mm, dehiscing incompletely, connective not splitting, sides sparsely to moderately hispid or pubescent, hairs white, to 0.2 mm, sutures denticulate, teeth to 0.1 mm;

staminode 13–16 mm, reaching orifice or slightly exserted, 0.6–0.8 mm diam., tip straight, distal 2–3 mm sparsely villous, hairs yellow, to 0.7 mm;

style 14–18 mm.

calyx lobes elliptic to ovate, 3.5–5 × 1.5–2.2 mm;

corolla unlined internally, 22–27 mm, glandular-pubescent internally, tube 4–5 mm, throat 6–7 mm diam.;

pollen sacs 1.2–1.5 mm;

staminode 16–19 mm;

style 18–25 mm.

Capsules

8–12 × 5–6 mm.

7–10 × 5–7 mm.

2n

= 16.

Penstemon subglaber

Penstemon baccharifolius

Phenology Flowering Jun–Aug. Flowering Apr–Oct.
Habitat Sagebrush shrublands, clearings in fir forests. Limestone cliffs, ledges, hills.
Elevation 1600–3400 m. (5200–11200 ft.) 300–2000 m. (1000–6600 ft.)
Distribution
from FNA
ID; UT; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
TX; Mexico (Coahuila, San Luis Potosí)
[WildflowerSearch map]
[BONAP county map]
Discussion

Studies of morphology and flavonoids confirm the distinctness of Penstemon subglaber from P. mensarum and P. saxosorum (M. L. Moorman 1982). Penstemon subglaber occurs primarily from the Teton and Wind River mountains of western Wyoming through the Uinta and Wasatch mountains to the Tushar Mountains in south-central Utah.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Penstemon baccharifolius is known from the Edwards Plateau and eastern Trans-Pecos of Texas, from Bandera and Medina counties west to extreme eastern Presidio County. It also occurs in the mountains of northern Coahuila, Mexico. I. Méndez Larios and J. L. Villaseñor Ríos (2001) listed it for the state of San Luis Potosí, Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 17, p. 181. FNA vol. 17, p. 97.
Parent taxa Plantaginaceae > Penstemon > subg. Penstemon > sect. Glabri Plantaginaceae > Penstemon > subg. Penstemon > sect. Baccharifolii
Sibling taxa
P. abietinus, P. absarokensis, P. acaulis, P. acuminatus, P. alamosensis, P. albertinus, P. albidus, P. albomarginatus, P. ambiguus, P. ammophilus, P. anguineus, P. angustifolius, P. arenarius, P. arenicola, P. aridus, P. arkansanus, P. attenuatus, P. atwoodii, P. auriberbis, P. australis, P. azureus, P. baccharifolius, P. barbatus, P. barnebyi, P. barrettiae, P. bicolor, P. bleaklyi, P. bracteatus, P. breviculus, P. brevisepalus, P. buckleyi, P. caesius, P. caespitosus, P. calcareus, P. californicus, P. calycosus, P. canescens, P. cardinalis, P. cardwellii, P. carnosus, P. caryi, P. centranthifolius, P. cinicola, P. clevelandii, P. clutei, P. cobaea, P. comarrhenus, P. compactus, P. concinnus, P. confertus, P. confusus, P. crandallii, P. cusickii, P. cyananthus, P. cyaneus, P. cyanocaulis, P. cyathophorus, P. dasyphyllus, P. davidsonii, P. deamii, P. deaveri, P. debilis, P. degeneri, P. deustus, P. digitalis, P. diphyllus, P. discolor, P. dissectus, P. distans, P. dolius, P. duchesnensis, P. eatonii, P. elegantulus, P. ellipticus, P. eriantherus, P. euglaucus, P. fendleri, P. filiformis, P. flavescens, P. floribundus, P. floridus, P. flowersii, P. franklinii, P. fremontii, P. fruticiformis, P. fruticosus, P. gairdneri, P. gibbensii, P. glaber, P. glandulosus, P. glaucinus, P. globosus, P. goodrichii, P. gormanii, P. gracilentus, P. gracilis, P. grahamii, P. grandiflorus, P. griffinii, P. grinnellii, P. guadalupensis, P. hallii, P. harbourii, P. harringtonii, P. havardii, P. haydenii, P. heterodoxus, P. heterophyllus, P. hirsutus, P. humilis, P. idahoensis, P. immanifestus, P. incertus, P. inflatus, P. jamesii, P. janishiae, P. kingii, P. kralii, P. labrosus, P. laetus, P. laevigatus, P. laevis, P. lanceolatus, P. laricifolius, P. laxiflorus, P. laxus, P. leiophyllus, P. lemhiensis, P. lentus, P. leonardii, P. linarioides, P. longiflorus, P. lyallii, P. marcusii, P. mensarum, P. metcalfei, P. miser, P. moffatii, P. monoensis, P. montanus, P. moriahensis, P. mucronatus, P. multiflorus, P. murrayanus, P. nanus, P. navajoa, P. neomexicanus, P. neotericus, P. newberryi, P. nitidus, P. nudiflorus, P. oklahomensis, P. oliganthus, P. ophianthus, P. osterhoutii, P. ovatus, P. pachyphyllus, P. pahutensis, P. pallidus, P. palmeri, P. papillatus, P. parryi, P. parvulus, P. parvus, P. patens, P. payettensis, P. paysoniorum, P. peckii, P. penlandii, P. pennellianus, P. perpulcher, P. personatus, P. petiolatus, P. pinifolius, P. pinorum, P. platyphyllus, P. pratensis, P. procerus, P. pruinosus, P. pseudoputus, P. pseudospectabilis, P. pudicus, P. pumilus, P. purpusii, P. putus, P. radicosus, P. rattanii, P. retrorsus, P. rhizomatosus, P. richardsonii, P. roezlii, P. rostriflorus, P. rubicundus, P. rupicola, P. rydbergii, P. saxosorum, P. scapoides, P. scariosus, P. secundiflorus, P. seorsus, P. sepalulus, P. serrulatus, P. smallii, P. spatulatus, P. speciosus, P. spectabilis, P. stenophyllus, P. stephensii, P. strictiformis, P. strictus, P. subserratus, P. subulatus, P. sudans, P. superbus, P. tenuiflorus, P. tenuis, P. teucrioides, P. thompsoniae, P. thurberi, P. tidestromii, P. tiehmii, P. tracyi, P. triflorus, P. triphyllus, P. tubaeflorus, P. uintahensis, P. utahensis, P. venustus, P. virens, P. virgatus, P. wardii, P. washingtonensis, P. watsonii, P. whippleanus, P. wilcoxii, P. wrightii, P. xylus, P. yampaënsis
P. abietinus, P. absarokensis, P. acaulis, P. acuminatus, P. alamosensis, P. albertinus, P. albidus, P. albomarginatus, P. ambiguus, P. ammophilus, P. anguineus, P. angustifolius, P. arenarius, P. arenicola, P. aridus, P. arkansanus, P. attenuatus, P. atwoodii, P. auriberbis, P. australis, P. azureus, P. barbatus, P. barnebyi, P. barrettiae, P. bicolor, P. bleaklyi, P. bracteatus, P. breviculus, P. brevisepalus, P. buckleyi, P. caesius, P. caespitosus, P. calcareus, P. californicus, P. calycosus, P. canescens, P. cardinalis, P. cardwellii, P. carnosus, P. caryi, P. centranthifolius, P. cinicola, P. clevelandii, P. clutei, P. cobaea, P. comarrhenus, P. compactus, P. concinnus, P. confertus, P. confusus, P. crandallii, P. cusickii, P. cyananthus, P. cyaneus, P. cyanocaulis, P. cyathophorus, P. dasyphyllus, P. davidsonii, P. deamii, P. deaveri, P. debilis, P. degeneri, P. deustus, P. digitalis, P. diphyllus, P. discolor, P. dissectus, P. distans, P. dolius, P. duchesnensis, P. eatonii, P. elegantulus, P. ellipticus, P. eriantherus, P. euglaucus, P. fendleri, P. filiformis, P. flavescens, P. floribundus, P. floridus, P. flowersii, P. franklinii, P. fremontii, P. fruticiformis, P. fruticosus, P. gairdneri, P. gibbensii, P. glaber, P. glandulosus, P. glaucinus, P. globosus, P. goodrichii, P. gormanii, P. gracilentus, P. gracilis, P. grahamii, P. grandiflorus, P. griffinii, P. grinnellii, P. guadalupensis, P. hallii, P. harbourii, P. harringtonii, P. havardii, P. haydenii, P. heterodoxus, P. heterophyllus, P. hirsutus, P. humilis, P. idahoensis, P. immanifestus, P. incertus, P. inflatus, P. jamesii, P. janishiae, P. kingii, P. kralii, P. labrosus, P. laetus, P. laevigatus, P. laevis, P. lanceolatus, P. laricifolius, P. laxiflorus, P. laxus, P. leiophyllus, P. lemhiensis, P. lentus, P. leonardii, P. linarioides, P. longiflorus, P. lyallii, P. marcusii, P. mensarum, P. metcalfei, P. miser, P. moffatii, P. monoensis, P. montanus, P. moriahensis, P. mucronatus, P. multiflorus, P. murrayanus, P. nanus, P. navajoa, P. neomexicanus, P. neotericus, P. newberryi, P. nitidus, P. nudiflorus, P. oklahomensis, P. oliganthus, P. ophianthus, P. osterhoutii, P. ovatus, P. pachyphyllus, P. pahutensis, P. pallidus, P. palmeri, P. papillatus, P. parryi, P. parvulus, P. parvus, P. patens, P. payettensis, P. paysoniorum, P. peckii, P. penlandii, P. pennellianus, P. perpulcher, P. personatus, P. petiolatus, P. pinifolius, P. pinorum, P. platyphyllus, P. pratensis, P. procerus, P. pruinosus, P. pseudoputus, P. pseudospectabilis, P. pudicus, P. pumilus, P. purpusii, P. putus, P. radicosus, P. rattanii, P. retrorsus, P. rhizomatosus, P. richardsonii, P. roezlii, P. rostriflorus, P. rubicundus, P. rupicola, P. rydbergii, P. saxosorum, P. scapoides, P. scariosus, P. secundiflorus, P. seorsus, P. sepalulus, P. serrulatus, P. smallii, P. spatulatus, P. speciosus, P. spectabilis, P. stenophyllus, P. stephensii, P. strictiformis, P. strictus, P. subglaber, P. subserratus, P. subulatus, P. sudans, P. superbus, P. tenuiflorus, P. tenuis, P. teucrioides, P. thompsoniae, P. thurberi, P. tidestromii, P. tiehmii, P. tracyi, P. triflorus, P. triphyllus, P. tubaeflorus, P. uintahensis, P. utahensis, P. venustus, P. virens, P. virgatus, P. wardii, P. washingtonensis, P. watsonii, P. whippleanus, P. wilcoxii, P. wrightii, P. xylus, P. yampaënsis
Synonyms P. glaber var. utahensis
Name authority Rydberg: Bull. Torrey Bot. Club 36: 688. (1909) — (as Pentstemon) Hooker: Bot. Mag. 78: plate 4627. (1852) — (as Pentstemon)
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