The Collaborative International Dictionary of English v.0.48:
Andreaeales \Andreaeales\ n. 1. 1 an order of mosses which comprises a single genus: Andreaea. Syn: order Andreaeales. [WordNet 1.5]WordNet (r) 3.0 (2006):
Andreaeales n 1: comprises a single genus: Andreaea [syn: Andreaeales, order Andreaeales]