1. Underleaves distinctly bifid; leaf apex bilobed, rarely entire; plants pale green; often producing gemmae .. Calypogeia
1. Underleaves undivided or retuse (rarely divided to1/5); leaf apex undivided; plants deep green to brown; gemmae lacking ... Mnioloma
1. Anfigastros conspicuamente 2-fido; hoja ápice bilobado, rara vez entero; plantas pálido verde; a menudo producing yemas .. Calypogeia
1. Anfigastros undivided o retuso (rara vez partido to1/5); hoja ápice undivided; plantas intenso verde a pardo; yemas ausente ... Mnioloma