A world revisionary study of the genus Groutiella Steere (Orthotrichaceae, Bryopsida).

The genus Groutiella Steere is revised on a worldwide basis. Nine species are accepted: G. apiculata (Hook.) H.A. Crum & Steere, G. chimborazensis (Spruce ex Mitt.) Florsch., G. husnotii (Schimp. ex Besch.) H.A. Crum & Steere, G. macrorrhyncha (Mitt. ex Bosch & Sande Lac.) Wijk & Margad., G. obtusa (Mitt.) Florsch., G. reesei (Vitt) B.H. Allen, G. tomentosa (Hornsch.) Wijk & Margad., G. tuberculata B.H. Allen & I.H. Holz and G. tumidula (Mitt.) Vitt. Four species are reduced to synonymy, Groutiella subgoniorrhyncha (Broth.) Wijk & Margad. and G. thraustophylla (Müll. Hal. ex Broth.) Wijk & Margad. under G. tomentosa, G. maracaibensis (Broth.) B.H. Allen & Goffinet under G. macrorrhyncha, and G. wagneriana (Müll. Hal.) H.A. Crum & Steere under G. apiculata. A key, illustrations and diagnostic features to the recognized species are provided. [ABSTRACT FROM AUTHOR]