(a) The reproductive anatomy of a Holcoglossum amesianum orchid. (b) Open flower before pollination. (c) Anther cap opens. (d) The stipe and the two pollinia on its tip rise, then (e) curve around the rostellum. (f) The stipe curves up towards the stigma and (g) inserts the pollinia into the stigma cavity. Credit: LaiQiang Huang Tsinghua University Graduate School at Shenzhen