Abstract
The diatom Encyonema nevadense S.Blanco & al. sp. nov. is described as a new species, from epilithic samples collected from a high mountain pond in Sierra Nevada National Park. This taxon is characterized by the presence of narrow lanceolate valves with a moderate dorsiventrality, and the presence of areolae with irregular external openings. The type population is compared with Encyonema perpusillum (A.Cleve) D.G.Mann and its varieties, the morphologically closest species within the genus. The ecological and biogeographic implications of the discovery are briefly discussed.
Highlights
Específicamente, las diatomeas lacustres en la ecorregión mediterránea están todavía poco estudiadas, con estudios locales (v. gr., Blanco & al. 2013) que sugieren que los catálogos florísticos existentes para estos sistemas están lejos de ser exhaustivos
Nov., además de cierto desarrollo del área central, pero las valvas son más anchas —4–5 μm vs 3–4 μm en E. nevadense sp
Summary
Como especie nueva, a partir de muestras de epiliton recogidas en una laguna de alta montaña del Parque Nacional de Sierra Nevada. Se compara la población tipo con la de Encyonema perpusillum (A.Cleve) D.G.Mann y sus variedades, la especie morfológicamente más cercana dentro del género. Encyonema nevadense S.Blanco, Olenici, De Vicente & F.Guerrero sp.
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