Lara, FranciscoMazimpaka, VicenteGarilleti, RicardoMedina Bujalance, Rafael2024-01-252024-01-252008-12-010007-27451938-437810.1639/0007-2745-111.4.670https://hdl.handle.net/20.500.14352/95381This work was funded by the Spanish Ministry of Education and Science, Grants CGL2004-03513 and CGL2007-61389A new Orthotrichum species, O. norrisii, is described from California. The new taxon is recognized by a unique combination of sporophytic characters: capsule narrowly cylindrical and not contracted below mouth when dry, exothecial bands narrow and formed by 2(–3) cell rows, peristome with eight pairs of exostome teeth and eight endostome segments, stomata cryptopore and located in the lower part of the urn, lid plane and rostrate and vaginula hairy. Widely distributed throughout California, the new taxon has been overlooked and confused with O. tenellum.engjournal articlehttps://bioone.org/journals/the-bryologist/volume-111/issue-4/0007-2745-111.4.670/Orthotrichum-Norrisii-Orthotrichaceae-A-New-Epiphytic-Californian-Moss/10.1639/0007-2745-111.4.670.shortrestricted access582.32Bryophytes, taxonomy, Orthotrichum, Orthotrichaceae, CaliforniaBotánica (Biología)2417.01 Briología