Poa pratensis L.

  • Filed As

    Poaceae
    Poa pratensis L.

  • Collector(s)

    G. Whitehead 1514, 24 Jul 1978

  • Location

    United States of America. Idaho. Fremont Co. Site 132. Brush community between U. S. Highway 191 and the Snake River just south of the Osborne Bridge.

  • Habitat

    Associated with Pinus contorta, Prunus virginiana, [see label for full list].

  • Description

    Nonrhizomatous versus rhizomatous distinction between P. palustris and P. pratensis can be confusing. [See label for full description.]. Phenology of specimen: Fertile.

  • Identifiers

    NY Barcode: 02839407

    Occurrence ID: 263e95cc-74ca-4e65-b720-dc796dd43ce4

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  • Kingdom

    Plantae

  • Division

    Magnoliophyta

  • Order

    Poales

  • Family

    Poaceae

  • All Determinations

    Poa pratensis L. det G. Whitehead, 24 Jul 1978

  • Region

    North America

  • Country

    United States of America

  • State/Province

    Idaho

  • County/Municipio

    Fremont Co.

  • Locality

    Site 132. Brush community between U. S. Highway 191 and the Snake River just south of the Osborne Bridge.

  • Township, Range, Section

    T11N, R42E, S1 NW ¼

  • Elevation

    Alt. 1950 m. (6398 ft.)

  • Coordinates

    44.3169, -111.453

  • Geodetic Datum

    WGS84

  • Distribution

    Map all specimens of this taxon

02839407
Ray J Davis Herbarium, Idaho Museum of Natural History [IDS]
IDAHO, U.S.A.
Flora of the Island Park Geothermal Study Area
Poa pratensis L.
det. by Gordon S. Whitehead, 24 JUL 1978, FPNW
FREMONT CO.
Site 132. Brush community between U.S. Highway 191 and the
Snake River just south of the Osborne Bridge; Elevation 1950m.
Widespread in open woods, meadows, and brush communities.
T11N R42ES1 NW 1/4///44.3169° N-111.45268° W
[WGS84] ± 500 m. <estimate from BioGeomancer>
The nonrhizomatous versus rhizomatous distinction between P.
palustris and P. pratensis can be confusing. I have found that,
for my area at least, the character of inflorescence size is often,
though not always, more clearly marked. The inflorescence of P.
palustris is generally about 17 cm, the shortest measurement I
have made being 14.5 cm. By contrast, P. pratensis averages
about 8 cm, the longest measurement being 13 cm. Voucher:
Whitehead, G.S. 1983. M.S., Idaho State U.
Associated with Pinus contorta, Primus virginiana, Sorbus
scopulina, and P. nervosa; or with Iliamna rivularis,
Tragopogon dubius, and Bromus inermis; or with Artemisia
tridentata, Agropyron dasystachyum, Eriogonum umbellatum,
and Festuca idahoensis.
Gordon S. Whitehead 1514	24 JUL 1978
POACEAE
02839407