Cleistocarpous Tortella species from South America Comprise a New Genus of Pottiaceae

ZANDER, RICHARD; SUÁREZ, GUILLERMO M.; JIMENEZ, SOLEDAD

BRYOLOGIST

AMER BRYOLOGICAL LICHENOLOGICAL SOC INC

Lugar: Nebraska, USA; Año: 2021

0007-2745

Abstract. Anaschisma, a new genus of Pottiaceae, is distinguished from both Tortella and Trichostomum by the caducous, cleistocarpous capsule, and from Aschisma by capsule without palisade cell arrangement leading to irregular, not circumscissle dehiscence. It is similar to Aschisma in the denticulate, weakly bordered cauline leaves, broadest at the base, and tendency to secund leaf stance. Four species of South America comprise the genus, two of them new to science. The tribe Trichostomeae is emended to be restricted to apparent descendant taxa of Trichostomum brachydontium. Corrections are made to a previous treatment.