introrse
/ɪnˈtrɔːs
/adjective Botany & Zoology
1Turned inwards. The opposite of extrorse.Anthers are introrse and fused longitudinally through many papillae, in such a way that they form a cuff around the ovary....
- Five introrse anthers are united to form a cylinder around the style while the separate filaments are attached to the base of the corolla tubes.
1.1(Of anthers) releasing their pollen towards the centre of the flower.The ten stamens are introrse, and when elongate the anthers group in the upper part of the flower.
Origin
Mid 19th century: from Latin introrsus, from introversus 'turned inwards'.