inops William J. Crins, Jeff H. Rettig IllustratedEndemic Synonyms: Carex pensylvanica var. verspertina L. H. Bailey Carex verecunda T. Holm Carex vespertina (L
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familyCyperaceae genusCarex sectionCarex sect. Acrocystis speciesCarex pensylvanica Lamarck in J. Lamarck et al., Encyl. 3: 388. 1792. William J. Crins,
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genusPersicaria sectionPersicaria sect. Persicaria speciesPersicaria pensylvanica (Linnaeus) M. Gómez Anales Inst. Segunda Enseñ. 2: 278. 1896. Harold
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Aethéogam., 58. 1805,. Roxanne I. Hastings, Henk C. Greven Synonyms: Grimmia pensylvanica Schwägrichen Treatment appears in FNA Volume 27. Treatment on page 241
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Dryopteridaceae Dryopteridaceae Onoclea sensibilis Matteuccia struthiopteris var. pensylvanica John Myers John Myers Dryopteridaceae Dryopteridaceae Dryopteridaceae
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Pouzolzia zeylanica Pilea microphylla Parietaria floridana Parietaria pensylvanica Pilea pumila Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey
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Prunus emarginata within P. pensylvanica. Given that much of the problem of separating P. emarginata from P. pensylvanica arises from intermediate plants
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Myricaceae Myricaceae Myrica cerifera Comptonia peregrina Myrica gale Myrica pensylvanica John Myers John Myers John Myers John Myers
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IllustratedEndemic Basionym: Silene pensylvanica Michaux Fl. Bor.-Amer. 1: 272. 1803 Synonyms: Silene caroliniana var. pensylvanica (Michaux) Fernald Treatment
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EndemicIllustrated Synonyms: Prunus corymbulosa Rydberg P. pensylvanica subsp. corymbulosa (Rydberg) W. Wight P. pensylvanica var. saximontana Rehder Treatment appears
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familyAsteraceae tribeAsteraceae tribe Gnaphalieae genusGamochaeta speciesGamochaeta pensylvanica (Willdenow) Cabrera Bol. Soc. Argent. Bot. 9: 375. 1961. Guy L. Nesom
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Potentilla atrovirens Rydberg P. brooksensis Jurtzev P. pensylvanica var. arida B. Boivin P. pensylvanica var. brevipila Soják P. sibirica Treatment appears
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Barbara Ertter Common names: La Sal cinquefoil Endemic Synonyms: Potentilla pensylvanica var. paucijuga (Rydberg) S. L. Welsh & B. C. Johnston P. rubricaulis
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Endemic Synonyms: Potentilla pensylvanica var. litoralis (Rydberg) B. Boivin P. pensylvanica var. pectinata Lepage P. pensylvanica var. virgulata (A. Nelson)
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as occurring there. To distinguish between Myrica heterophylla and M. pensylvanica in the vegetative condition is difficult at best. Although M. heterophylla
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pubescens [E] R. John Little, Landon E. McKinney† Endemic Synonyms: Viola pensylvanica Michaux V. pubescens var. eriocarpa Nuttall V. pubescens var. peckii House
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cerifera has often been confused with M. pensylvanica and with M. heterophylla. It is distinguished from M. pensylvanica on the basis of gland density on the
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their wider leaves, and from S. pensylvanica (p. 621) by their shorter, unawned spikelets. Hybrids with S. pensylvanica, called Sphenopholis xpallens, have
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Myricaceae Myricaceae Myrica cerifera Comptonia peregrina Myrica gale Myrica pensylvanica John Myers John Myers John Myers John Myers
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narrower than are those of P. pensylvanica, and populations exhibit less variation in perianth color. As in P. pensylvanica, flowers with three styles and
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Dryopteridaceae Dryopteridaceae Onoclea sensibilis Matteuccia struthiopteris var. pensylvanica John Myers John Myers Dryopteridaceae Dryopteridaceae Dryopteridaceae
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glabrata (Lehmann) Kohli & Packer P. glabrella Rydberg P. monidensis A. Nelson P. pensylvanica var. glabrata (Lehmann) S. Watson P. wyomingensis A. Nelson Treatment
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Pouzolzia zeylanica Pilea microphylla Parietaria floridana Parietaria pensylvanica Pilea pumila Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey
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Elven Common names: Jepson’s potentilla Endemic Basionym: Potentilla pensylvanica var. ovium Jepson Fl. Calif. 2: 184. 1936 (as pennsylvanica) Synonyms:
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Elven Common names: potentille bipinnatifide Endemic Synonyms: Potentilla pensylvanica var. bipinnatifida (Douglas) Torrey & A. Gray Treatment appears in FNA
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R. J. Davis V. palustris var. leimonia J. K. Henry V. palustris var. pensylvanica Gingins V. palustris subsp. pubifolia Kuta Treatment appears in FNA Volume
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N.Dak. Potentilla lasiodonta is a diploid relative of tetraploid P. pensylvanica, sharing similar velvety vestiture of dense short hairs, pinnate leaves
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In both habitat and morphology, Micranthes oregana is similar to M. pensylvanica. A thorough investigation of the two species, especially the populations
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Carex caryophyllea may escape notice because it somewhat resembles C. pensylvanica in size, habit, scale color, perigynia pubescence, and flowering time
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occurrence in central Alaska (E. Hultén 1968) is based on a specimen of P. pensylvanica (CAN). Significant variation exists throughout the range of Potentilla
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taxa such as Betula, Populus tremuloides, P. grandidentata, and Prunus pensylvanica. Higher elevations of the Appalachian Mountains support a unique assemblage
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