Life … Plants Mosses Joint-toothed Mosses Dicranales Rhabdoweisiaceae Arctoa genus Arctoa Arctoa Field notes Children Starke's Fork-moss native Blytt's Fork-moss Tawny Fork Moss Snow Fork-moss Northern Fork Moss Andersson's Arctic Moss Top native Arctoa All Native to the US, ranked by caterpillars, then bees and other hosts, food, flowers and shelter. Starke's Fork-moss Arctoa starkei Close