Niebla siphonoloba

Niebla siphonoloba was recognized as a result of undertaking a taxonomic revision of the genus in regard to developing a lichen flora of Baja California, which began in 1986. It was first recognized from specimens collected on the Vizcaíno Peninsula near Arroyo San Andrés, 15 May 1986, the type (biology), Spjut 9699, deposited at the United States National Herbarium (Smithsonian Institution, Museum of Natural History, Botany Department), and at the Universidad Autónoma de Baja California, Ensenada, Mexico. The species (N. siphonoloba) was subsequently recognized to occur frequently on lava along the northern peninsula of Baja California coast to Bahia de San Quintín, and on Santa Cruz Island in the Channel Islands. Niebla siphonoloba has also been interpreted to belong to a broad species concept of Niebla homalea, one that recognizes only three species in the genus, two by the medulla reaction to para-phenylenediamine, depsidones (pd+, Niebla josecuervoi), depsides (pd-, Niebla homalea) and one by isidia (Niebla isidiaescens), based on a narrow genus concept; the broad taxonomic concept has been reported to have many inconsistencies.