Poa pratensis L.

  • Filed As

    Poaceae
    Poa pratensis L.

  • Collector(s)

    G. Whitehead 497, 29 Jun 1977

  • Location

    United States of America. Idaho. Fremont Co. Island Park Geothermal Study Area. Site 17. Along Henry's Lake Outlet upstream from the bridge on the road from Island Park Lodge to Big Springs. Some of the collections may have been made in sections 17, 18, 19, and 21, but they were all made in or in the margins of Henry's Lake Flats.

  • Habitat

    Widespread in open woods, meadows, and brush communities. Associated with Pinus contorta, [see label for full list].

  • Description

    "The nonrhizomatous versus rhizomatous distinction between P. palustris and P. pratensis can be confusing." [See label for additional notes from collector, G. S. Whitehead.]. Phenology of specimen: Fertile.

  • Identifiers

    NY Barcode: 02912853

    Occurrence ID: dd6685ec-a18a-4b6e-a541-197262e150be

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    Send comments on this specimen record

  • Kingdom

    Plantae

  • Division

    Magnoliophyta

  • Order

    Poales

  • Family

    Poaceae

  • All Determinations

    Poa pratensis L. det G. Whitehead, 29 Jun 1977

  • Region

    North America

  • Country

    United States of America

  • State/Province

    Idaho

  • County/Municipio

    Fremont Co.

  • Locality

    Island Park Geothermal Study Area. Site 17. Along Henry's Lake Outlet upstream from the bridge on the road from Island Park Lodge to Big Springs. Some of the collections may have been made in sections 17, 18, 19, and 21, but they were all made in or in the margins of Henry's Lake Flats.

  • Township, Range, Section

    T14N, R44E, S20 SW¼

  • Elevation

    Alt. 1950 m. (6398 ft.)

  • Coordinates

    44.5233, -111.287

  • Geodetic Datum

    WGS84

  • Distribution

    Map all specimens of this taxon

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, 29 JUN 1977, FPNW
FREMONT CO.
Site 17. Along Henry’s Lake Outlet upstream from the bridge
on the road from Island Park Lodge to Big Springs. Some of the
collections may have been made in sections 17,18, 19, and 21,
but they were all made in or in the margins of, Henry’s Lake
Flats; Elevation 1950m. Widespread in open woods, meadows,
and brush communities.
T14N R44E S20 SW 1/4 III 44.52329° N -111.28702° W
[WGS84] ± 500 m. <estimate from BioGeomancer>
The nonrhizomatous versus rhizomatous distinction between P.
palustris and P. pratensis can be confusing. 1 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, Prunus virginiana, Sorbus
scopulina, and P. nervosa; or with Iliamna rivularis,
Tragopogón dubius, and Bromus inermis; or with Artemisia
tridentata, Agropyron dasystachyum, Eriogonum umbellatum,
and Festuca idahoensis.
Gordon S. Whitehead 497	29	JUN	1977
POACEAE
02912853