Rhacomitrium
noun
Rhaco·mit·ri·um
ˌrakōˈmi‧trēəm,
ˌrāk-
: a genus of acrocarpous mosses (family Grimmiaceae) growing chiefly on sandstone rocks and having often hair-pointed leaves and sinuous leaf cells
Word History
Etymology
New Latin, from Greek rhakos ragged garment + mitrion, diminutive of mitra headband