Sommaire à partir des références de la base
Bryophyte Flora of North America, Provisional Publication. Bartramia Hedwig
Griffin (D.) - page(s) 1-8
Bryophyte Flora of North America, Provisional Publication. Orthotrichum Hedwig
Vitt (D. H.) - page(s) 1-29
Bryophyte Flora of North America, Provisional Publication. Amphidium Schimper
Vitt (D. H.) - page(s) 1-5