Ontogenesis of Eulophia streptopetalla Lindl. (Orchidaceae) in culture

This study presents the ontogenetic development of Eulophia streptopetalla Lindl., a rare terrestrial orchid species, under in vitro and ex situ conditions. The complete ontogenetic sequence – from protocorm to generative plant — is described in detail. Special emphasis is placed on the morphogenetic characteristics of early developmental stages and the ability of seedlings to undergo vegetative multiplication during the protocorm and seedling phases. It was demonstrated that cultivation on Harvais medium without growth regulators supports successful development, including flowering. After acclimatization in greenhouse conditions, plants retained typical morphological traits and produced inflorescences, confirming the completion of a full life cycle. The results highlight the high potential of this species for micropropagation.