Flowering of Guadua trinii (Poaceae, Bambusoideae, Bambuseae)

Abstract Flowering in bamboo is an unusual event. Documenting flowering individuals or populations provides valuable information about bamboo life cycles. Guadua trinii is endemic to northeastern Argentina, southern Brazil, Paraguay and Uruguay. We here report the flowering of this species in native and cultivated stands in Argentina and confirm its flowering cycle to be of 30-33 years.