Photo of climbing milkweed flowers and leaves.

    Climbing Milkweed

    Matelea decipiens
    Photo of common horse gentian stalk showing opposite, perfoliate leaves.

    Common Horse Gentian

    Triosteum perfoliatum
    Photo of many blooming ashy sunflower plants, showing gray-green leaves.

    Sunflowers

    Helianthus spp.