Understory is typically made of blueberry, lichens, crowberry and ling. The forest supports the endangered broom crowberry and twelve rare species of moth. The larvae feed on heather, crowberry and "Umbilicus". During their honeymood she became the first women to make the ascent of Crowberry Ridge. This dry heath supports juniper, bearberry, crowberry and heather. Dwarf birch, mosses and berries (blueberry, cloudberry, black crowberry, etc.) are abundant. Heather, crowberry, bilberry and the rare cloudberry are also found. Abundant are dwarf birch, mosses and berries (blueberry, cloudberry, black crowberry, etc.). Crowberry ("Empetrum") and grasses survive here. Shrubs are common, especially dwarf evergreen species like partridgefoot, kinnikinnick, crowberry, lingonberry, and alpine-azalea. These include Arctic willow, crowberry, sedges, mosses and lichens. Heather and crowberry are also widespread across the island. The black crowberry ("Empetrum nigrum") may also be seen amongst those bearing black fruit. On Cape Cod it occurs with pitch pine ("Pinus rigida") and broom crowberry ("Corema conradii"). We know from historical records that the Icelanders and Greenlanders even made wine from crowberry.