Two state-listed plants found in northwest Illinois, from left: the dwarf, or fragile, prickly pear, Opuntia fragilis and the long-bract frog orchid, Dactylorhiza viridis.

Brian Charles, an Illinois Natural History Survey scientific specialist in botany, led a multiyear effort to rank threatened and endangered plant species in Illinois.

Some of the state-listed plants in Illinois are carnivorous, like the round-leaved sundew, Drosera rotundifolia, left, and the purple pitcher plant, Sarracenia purpurea.

Three state-listed plants that persist in northeast Illinois are, from left, the grass pink orchid, Calopogon tuberosus, the orange fringed orchid, Platanthera ciliaris, and the cuckoo flower, ...

Two state-listed plants which persist in northeast Illinois: the bog buckbean, Menyanthes trifoliata, left, and the lesser purple-fringed orchid, Platanthera psycodes, which is critically imperiled in ...

Students and faculty gather at the Sombrilla Plaza on UTSA’s Main Campus to celebrate the Be Bold campaign.