Kalmar "Dagger Fern" ba sananne ba ne a cikin nomenclature na botanical. Duk da haka, akwai wata tsiro da aka fi sani da "Deer's Foot Fern" (Davallia trichomanoides) wanda a wasu lokuta ake kira Dagger Fern saboda siffar gashinsa. Kafar Deer's Fern fern ce mai zafi mai zafi a kudu maso gabashin Asiya da tsibirin Pacific. Furancinsa suna da siffar triangular tare da tukwici masu kaifi, waɗanda suke kama da siffar wuƙa, don haka sunan gama gari.