views updated

Thuidiales (subclass Bryidae) An order of pleurocarpous mosses which range in size from minute to large. The primary stems are creeping, with secondary stems prostrate to ascending, irregularly branched to regularly 1- to 3-pinnate. The leaves are typically ovoid, nerveless or with a short double nerve or a single nerve ending below the leaf tip. There are several genera, found in a wide range of habitats. Thuidium tamariscinum is a very attractive moss, bright green in colour, and intricately, tripinnately branched to give a fern-like appearance. It is a common and conspicuous moss in woods and on shady banks.