High Quality Content by WIKIPEDIA articles! Aulacomnium palustre (Ribbed Bog Moss) is a moss that is nearly cosmopolitan in distribution. It occurs in North America, the Dominican Republic, Venezuela, Eurasia, and New Zealand. In North America, it occurs across southern arctic,subboreal, and boreal regions from Alaska and British Columbia to Greenland and Quebec. Documentation of ribbed bog moss`s distribution in the contiguous United States is probably incomplete. It is reported sporadically south to Washington, Wyoming, Georgia, and Virginia.