Photo of buffalo bur flower and leaves.

    Buffalo Bur (Kansas Thistle)

    Solanum rostratum
    Poisonous Icon

    Poisonous

    Photo of soapweed, a type of yucca

    Yuccas (Spanish Bayonet; Soapweed)

    Yucca smalliana, Y. glauca, and Y. arkansana
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    Edible