Trematodon Longicollis Moss
Trematodon longicollis, the long-necked Trematodon, may be distinguished from Trematodon ambiguum by the neck, which is twice as long as the spore-case, by the shorter plants, and by the slender character of the teeth and the leaves at the base of the pedicel. The specific name longicollis is compounded of two Latin roots, longum, long, and collum, a neck.