The Collaborative International Dictionary
Introrse
Introrse \In*trorse"\, a. [L. introrsus inward, contr. from
introversus. See Introvert.] (Bot.)
Turning or facing inward, or toward the axis of the part to
which it belongs.
--Gray.
Wiktionary
introrse
a. 1 (context botany English) Facing or turned inwards or towards an axis. 2 (context botany English) Said of anthers dehisce toward the center of the flower.