 Santiagueño Quechua in Argentina is divergent, and appears to derive from a mix of dialects, including South Bolivian.The most salient distinction between Ayacucho Quechua and the others is that it lacks the aspirated (tʃʰ, pʰ, tʰ, kʰ, qʰ) and ejective (tʃʼ, pʼ, tʼ, kʼ, qʼ) series of stop consonants.The other varieties of Bolivia and Southern Peru taken together have been called Cusco–Collao Quechua (or "Qusqu–Qullaw"); however, they are not monolithic.