Embryo and endosperm development in Pitcairnia encholirioides (Pitcairnioideae – Bromeliaceae): An endangered species of the Atlantic Forest

•Pitcairnia encholirioides is a threatened species endemic to inselbergs of the Atlantic Forest.•Understanding its reproductive cycle is relevant to in vitro induction aimed at conservation strategies.•Guidelines for in vitro propagation of P. encholirioides depend on knowledge of its embryogenesis and endospermogenesis.•Guidelines for in vitro culture of P. encholirioides should take into consideration the relationship between fruit maturation and embryo/endosperm.•Stages of seed development in P. encholirioides recommended for use in in vitro protocols are indicated in the manuscript.