Fig. 4

Comparisons between the two rewarding species, Habenaria petelotii and H. limprichtii. a Inflorescence size comparison between H. limprichtii and H. petelotii. b Overall natural fruit set during the 3 investigated years. c Correlation coefficient between the inflorescence size and fruit set in H. petelotii, and fruit set measured as the number of capsules produced (solid line) and proportion of fruits produced (dotted line). d The correlation coefficient between the inflorescence size and fruit set in H. limprichtii, and fruit set measured as the number of capsules produced (solid line) and proportion of fruits produced (dotted line). e Pollinia removal in 2018. f Pollinator-mediated geitonogamy