Photo of an Engelmann’s adder’s tongue with a black background

    Adder's Tongues

    Ophioglossum spp.
    Photo of starry rosinweed flowerheads on a black background

    Starry Rosinweed

    Silphium asteriscus
    Photo of walking fern plants growing on a moss-covered boulder

    Walking Fern

    Asplenium rhizophyllum (syn. Camptosorus rhyzophyllus)