Typification, taxonomy, and worldwide distribution of Braunia secunda (Hook.) Bruch & Schimp. (Hedwigiaceae). Journal of Bryology 38: 286-294.
Diagnosis and illustrations are given for Braunia secunda (Hook.) Bruch & Schimp.,
and a Humboldt and Bonpland specimen (BM) is selected as the lectotype. Also a
collection by Arséne (BM) is designated as the lectotype for B. secunda var. crassiretis
Thér. This variety is retained as synonym of B. secunda. The species concept of B.
secunda is revised and a provisional key is provided to help in the identification of 23
species of Braunia, based on examination of herbarium specimens worldwide. About
half of specimens from Mexico actually represent another species, B. andrieuxii
Lorentz. All material examined from India, previously identified as B. secunda belongs
to B. macropelma (Müll.Hal.) A.Jaeger, whereas collections from Africa are actually B.
rupestris (Mitt.) A.Jaeger, B. entodonticarpa Müll.Hal., or B. diaphana (Müll.Hal.)
A.Jaeger. These and other species should no longer be considered synonyms of B.
secunda. The worldwide distribution of the species is documented for the United
States, Mexico, Guatemala, Dominican Republic, Haiti, Venezuela, and Bolivia.
Keywords: Hedwigiales, keys, lectotypification, moss, nomenclature, systematics.