mucronate penstemon, sheep creek beardtongue
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James' beardtongue, James' penstemon
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ascending to erect, 10–35(–46) cm, glabrous. |
ascending to erect, 10–45(–52) cm, glabrate or retrorsely hairy proximally, glandular-pubescent distally. |
basal and cauline, glabrous; basal and proximal cauline 23–65(–100) × (9–)13–40 mm, blade oblanceolate, base tapered, apex rounded to obtuse or acute; cauline (2–)4–6(–9) pairs, sessile, (8–)20–30 × 8–26 mm, blade ovate to orbiculate, base clasping, apex mucronate. |
basal and cauline, not leathery, glabrous or retrorsely hairy along midvein, especially adaxially; basal and proximal cauline petiolate, 20–80(–105) × (2–)5–10(–13) mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire or serrate, apex obtuse to acute; cauline 3–6 pairs, sessile, 20–100(–110) × 5–15 mm, blade lanceolate to linear, base tapered to slightly clasping, margins entire or remotely dentate to remotely serrate, apex acute, rarely obtuse. |
interrupted, cylindric, (2–)11–18(–27) cm, axis glabrous, verticillasters 6–9(–15), cymes 2–6-flowered; proximal bracts orbiculate to ovate, 7–28 × 3–26 mm; peduncles and pedicels glabrous. |
continuous or interrupted, secund, 5–20(–24) cm, axis densely glandular-pubescent, verticillasters 2–8, cymes 2–5-flowered, 2 per node; proximal bracts lanceolate, (9–)25–90 × (1–)3–15 mm; peduncles and pedicels densely glandular-pubescent. |
calyx lobes ovate, (3–)4.5–6.5 × 1.5–2.3 mm, margins entire or erose, broadly scarious, glabrous; corolla blue to violet, with reddish violet nectar guides, guides sometimes passing onto limb, tubular-funnelform, (10–)13–17(–20) mm, glabrous externally, sparsely white-villous internally abaxially, tube (5–)7–10 mm, throat gradually inflated, 4.5–5.5(–7) mm diam., rounded abaxially; stamens included or longer pair reaching orifice, pollen sacs divergent to opposite, 0.7–1.1 mm, sutures papillate; staminode 7–13 mm, reaching orifice, (0.6–)0.9–1.9 mm diam., tip strongly recurved, distal 2–5 mm moderately to densely pilose, hairs brownish yellow or golden yellow, to 1 mm; style (7–)9–12 mm. |
calyx lobes ovate to lanceolate, 8–12 × 2–3 mm, glandular-pubescent; corolla white to lavender, pink, or violet, with magenta or violet-blue nectar guides, ventricose, 24–32(–35) mm, moderately to densely white-pilose and glandular-pubescent internally abaxially, tube 8–10 mm, throat abruptly inflated, slightly constricted at orifice, 9–15 mm diam., rounded abaxially; stamens included, pollen sacs opposite, explanate, 1–1.2 mm, dehiscing completely, sutures smooth; staminode 14–17 mm, prominently exserted, 0.3–0.4 mm diam., tip recurved, distal 10–14 mm lanate, hairs yellow, to 3.5 mm, and medial hairs shorter, stiffer, and retrorse; style 17–18 mm. |
8–10 × 6–7 mm. |
10–16 × 5–7 mm. |
= 16. |
= 16. |
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Flowering May–Jun. |
Flowering May–Jul. |
Sandy or gravelly soils, juniper and pinyon-juniper woodlands. |
Sandy, gravelly, or loamy soils, shortgrass prairies, sagebrush shrublands. |
1500–2500 m. (4900–8200 ft.) |
1100–2300 m. (3600–7500 ft.) |
CO; UT; WY
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CO; KS; NM; TX; Mexico (Coahuila)
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Penstemon mucronatus is known from Moffat and Rio Blanco counties, Colorado, Daggett and Uintah counties, Utah, and Carbon and Sweetwater counties, Wyoming. E. C. Neese (1993) considered it transitional to P. pachyphyllus var. pachyphyllus in northeastern Utah and treated it as a variety of that species. The two taxa often have similar leaf morphologies; P. mucronatus usually is easily distinguished from P. pachyphyllus var. pachyphyllus by its narrower staminode bearing shorter, less tangled hairs at the apex and nectar guides that extend onto the corolla limbs. Flowers of P. mucronatus are in many respects more similar to those of P. osterhoutii than they are to those of P. pachyphyllus. A chromosome count reported for P. pachyphyllus by F. S. Crosswhite and S. Kawano (1965) is referable to P. mucronatus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Penstemon jamesii occurs on the southern High Plains and trans-Pecos regions from southeastern Colorado and southwestern Kansas through eastern New Mexico and western Texas to northern Coahuila, Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
FNA vol. 17, p. 121. |
FNA vol. 17, p. 137. |
Plantaginaceae > Penstemon > subg. Penstemon > sect. Coerulei |
Plantaginaceae > Penstemon > subg. Penstemon > sect. Cristati |
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. 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 |
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. 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 |
P. pachyphyllus var. mucronatus |
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N. H. Holmgren: Brittonia 31: 234, fig. 10. (1979) |
Bentham: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 10: 325. (1846) — (as Pentstemon) |
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