B Baptistonia Barb. Rodr. Barbosella Schltr. Barbrodria Luer Barkeria Knowles & Westc. Barlia Parl. Bartholina R.Br. Basigyne J.J.Sm. Basiphyllaea Schltr. Baskervilla Lindl. Batemannia Lindl. Beclardia A.Rich. Beloglottis Schltr. Benthamia A.Rich. Benzingia Dodson Biermannia King & Pantl. Bifrenaria Lindl. Binotia Rolfe Bipinnula Comm. ex Juss. Bletia Ruiz and Pavon Bletilla Rchb.F. Bogoria J.J.Sm. Bolbidium (Lindl.) Lindl. Bollea Rchb.F. Bolusiella Schltr. Bonatea Willd. Bonniera Cordem. Brachionidium Lindl. Brachtia Rchb.f. Brachycorythis Lindl. Brachypeza Garay Brachystele Schltr. Bracisepalum J.J.Sm. Braemia Jenny Brassavola R.Br. Brassia R.Br. Brenesia Schltr. Briegeria Senghas Bromheadia Lindl. Broughtonia R.Br. Brownleea Harv. ex Lindl. Buchtienia Schltr. Bulbophyllum Thouars Bulleyia Schltr. Burnettia Lindl. Burnsbaloghia Szlach.