Aulonemia insolita (Bambusoideae: Bambuseae: Arthrostylidiinae) a new remarkable woody bamboo species with internode dimorphism endemic to Bolivia and Peru

Species belonging to the genus Aulonemia have distribution across Mexico, Central America, northern and central Andes, the Guiana shield and southern Brazil. Three Aulonemia species: Aulonemia hirtula, A. queko, and A. herzogiana are known to have dimorphic internodes. In this study, we describe a new species of Aulonemia, characterized by culms with a pattern of one long internode followed by four to five shorter internodes. Notably, this species exhibits erect culm leaf blades, an uncommon trait within the genus. This study provides a comprehensive description of this new Aulonemia species, along with a distribution map, photographs and a morphological key to the species of Aulonemia with dimorphic internodes.