Landese (Maritime Gascon, or parlar negre, which means "black speech" in English) is a dialect of the Gascon language, spoken in the south-west part of Landes of Gascony, part of Chalosse and around Bayonne (Aquitaine, metropolitan France).
The main feature of Landese is its propensity to pronounce ⟨e⟩ as /ø/ instead of /e/, and both final ⟨-e⟩ and ⟨-a⟩ as /ə/.
The poet, novelist and essayist Bernat Manciet (1923 - 2005) remained faithful to the local Gascon speaking of his native Landes region where he lived a large part of his life.
The erudite Vincent Foix (1857 - 1932) has written a dictionary[1] on the Gascon from Chalosse and other parts of Landes.
Part of content in this edit is based on a partial translation from the existing French Wikipedia article at fr:Parlar negre (see its history for attribution) which cites the following sources: