A taxonomic revision of Ulota Mohr (Orthotrichaceae) in South and Central America

Abstract

Abstract:

Twentythree species of Ulota from South and Central America have previously been reported. A revision of the species suggests that number should be reduced to thirteen (U.billbuckii, U.fuegiana, U.germana, U.larrainii, U.luteola, U.macrocalycina, U.macrodontia, U.magellanica, U.phyllantha, U.pusilla, U.pycnophylla, U.rhytiore and U.streptodon) with eight names (U.aurantiaca=U.pycnophylla, U.carinata=U.fuegiana, U.fernandeziana=U.fuegiana, U.glabella=U.fuegiana, U.lativentrosa=U.pusilla, U.lobbiana=U.germana, U.pygmaeothecia=U.luteola and U.rufula=U.germana) reduced to synonyms, as well as three varieties (U.fuegiana var. crispata=U.fuegiana, U.rufula var. fagicola=U.germana and U.rufula var. patagonica=U.fuegiana). The taxonomic status of two names (U.angustissima and U.ventricosa) remains ambiguous. The typification of five names (U.macrodontia, U.magellanica, U.nothofagi, U.persubulata and U.pygmaeothecia) is proposed here. With the first report of U.crispa for South America, the total number of species accepted here for this region is fourteen. Two species (i.e. U.phyllantha and U.crispa) occur in both Hemispheres, one species (i.e. U.rhytiore) is only present in the Northern Hemisphere, whereas the remaining eleven species are all restricted to the Southern Hemisphere. Among them, nine (U.billbuckii, U.fuegiana, U.larrainii, U.macrocalycina, U.macrodontia, U.magellanica, U.pusilla, U.pycnophylla and U.streptodon) are restricted to South America, and two (U.germana and U.luteola) are distributed in South America and Oceania. The peristomes and spores of seven accepted species are illustrated in SEM micrographs. A key to all accepted species as well as descriptions, illustrations, synonyms, ecological and geographic distributions, and discussions are provided.

Key words: Taxonomy, Moss, Orthotrichaceae, Ulota, South and Central America

Qinghua Wang, Yu Jia*. A taxonomic revision of Ulota Mohr (Orthotrichaceae) in South and Central America[J]. Plant Diversity, 2016, 38(02): 82-109.

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