Thelypteris reptans, creeping star-hair fern, is a Florida endangered species. Its dark green sterile fronds stay close to our native oolitic limestone and can grow to inches long. Fertile fronds are longer, more erect, and often arch back toward the ground. Reptansmeans crawling or creeping, refers to the fern’s ability to form roots (and new plants) at the tips of fertile fronds. Thelypterisreptans is typically found growing on limestone rocks, so it is a good addition to a shady rock wall or rock garden, but can be grown amongst other plants in shade or filtered light with regular irrigation.