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    • Desert Plants, Volume 30, Number 2 (January 2015)
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    Desert Plants, Volume 30, Number 2 (January 2015)

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    Author
    Wiens, John F.
    Van Devender, Thomas R.
    Dimmitt, Mark A.
    Affiliation
    Department of Botany, Arizona-Sonora Desert Museum
    University of Arizona Herbarium
    Center for Sonoran Desert Studies, Arizona-Sonora Desert Museum
    Issue Date
    2015-01
    
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    Other Titles
    Vegetation and Vascular Flora of Ironwood Forest National Monument, Pima and Pinal Counties, Arizona
    Publisher
    University of Arizona (Tucson, AZ)
    Journal
    Desert Plants
    Rights
    Copyright © Arizona Board of Regents. The University of Arizona.
    Collection Information
    Desert Plants is published by The University of Arizona for the Boyce Thompson Southwestern Arboretum. For more information about this unique botanical journal, please email the College of Agriculture and Life Sciences Publications Office at pubs@cals.arizona.edu.
    Abstract
    Ironwood Forest National Monument, created in 2000, is located west of Tucson and south of Casa Grande, in Pima and Pinal Counties, south-central Arizona. The boundaries encompass parts or all of eight desert hill and mountain ranges and two valleys. In the flora of 593 taxa, one federally listed endangered plant species, Echinocactus horizonthalonius variety nicholii, occurs within the Monument. Two other plant species common in Mexico, Cathestecum brevifolium and Pisonia capitata, have their only known United States populations in the Monument. Flora plots revealed a wide range in species composition and numbers based on topography and geology. Census plots performed on Carnegiea gigantea, Olneya tesota, Parkinsonia florida, Parkinsonia microphylla, and Prosopis velutina showed populations in most areas of the Monument to be healthy and stable. When compared with floras of nearby sites of similar habitat, the Ironwood Forest National Monument was found to be remarkably rich in species and low in exotic taxa.
    Type
    text
    Journal
    Description
    Complete issue of Desert Plants.
    ISSN
    0734-3434
    Collections
    Desert Plants, Volume 30, Number 2 (January 2015)

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