Species: Erigeron howellii

Howell's Fleabane
Species

    Often found in clusters of plants with several stems rising from a rhizome. Perennial, 20-50 cm tall. stems mostly hairless but a little hairy under the flower heads. Leaves thin, smooth,and shiny green, lower leaves with egg-shaped blades abruptly contracted to a petiole, upper leaves strongly clasp the stem at their bases. There is one flower head per stem which has loose, glandular involucral bracts. Flower heads include a yellow central disk 12-20 mm wide, comprised of disc florets with distinctly flared corollas 4-5 mm long. The central disk is surrounded by 30-50 white ray florets, each 13-25 mm long and 2-4 mm wide. Fruit is an achene with 5 asymmetrical nerves and a pappus of 20-30 bristles (Meinke 1982, WA HP 2003, Oregon Flora Project 2007).

    Source: Encyclopedia of Life

    Kingdom
    Plantae
    Phylum
    Anthophyta
    Class

    Dicotyledoneae

    Order

    Asterales

    Family

    Asteraceae

    Genus

    Erigeron

    Classification
    Other Global Common Names
    Howell's fleabane
    Informal Taxonomy
    Plants, Vascular - Flowering Plants - Aster Family
    Formal Taxonomy
    Plantae - Anthophyta - Dicotyledoneae - Asterales - Asteraceae - Erigeron - Generally considered distinct by later authors (Kartesz 1994, 1999; Flora of North America 2006).

    Often found in clusters of plants with several stems rising from a rhizome. Perennial, 20-50 cm tall. stems mostly hairless but a little hairy under the flower heads. Leaves thin, smooth,and shiny green, lower leaves with egg-shaped blades abruptly contracted to a petiole, upper leaves strongly clasp the stem at their bases. There is one flower head per stem which has loose, glandular involucral bracts. Flower heads include a yellow central disk 12-20 mm wide, comprised of disc florets with distinctly flared corollas 4-5 mm long. The central disk is surrounded by 30-50 white ray florets, each 13-25 mm long and 2-4 mm wide. Fruit is an achene with 5 asymmetrical nerves and a pappus of 20-30 bristles (Meinke 1982, WA HP 2003, Oregon Flora Project 2007).

    Source: Encyclopedia of Life

    Short General Description
    A perennial herb, 2-5 dm tall, that produces flower heads with white ray and yellow disk flowers. Blooms from May to July.
    NatureServe Global Status Rank
    G2
    Global Status Last Reviewed
    2008-08-07
    Global Status Last Changed
    1991-02-08
    Conservation Status Map
    <img src="http://www.natureserve.org/explorer/servlet/GetMapGif?US.OR=S2&US.WA=S2" alt="Conservation Status Map" style="width: 475px; height: auto;" />
    Global Range
    Endemic to the central portion of the Columbia River Gorge in Washington and Oregon; known from Skamania Co., WA and Clackamas, Hood River, and Multnomah cos., OR (WAHP 2003). Using GIS tools, range extent was estimated to be approximately 900-950 square km.
    ELEMENT_GLOBAL.2.130050