Tribe Arethuseae (Calopogon R. Brown and Arethusa L.) and Subfamily Vanilloideae (Part One) (Pogonia Jussieu) - The Pollination Biology of North American Orchids: North of Florida and Mexico - page 153

Table 8.2 Summary of data on percentage fruit set resulting from hand pollination and open pollination in Calopogon tuberosus , Pogonia ophioglossoides ,
and Arethusa bulbosa
Taxon Study site Selfing Geitonogamy Outcrossing Open Authors

C. tuberosus FL 67 Thien ( 1973 )

ME 87 61 83 26 (12-40) Firmage and Cole ( 1988 )

NL 19 (17-22) Boland and Scott ( 1991 )

WI 16 Thien and Marcks ( 1972 )

P. ophioglossoides NL 30 (29-33) Boland and Scott ( 1991 )

WI 89-95 10-100 Thien and Marcks ( 1972 ), Thien ( 1973 )

A. bulbosa NL 16 (13-20) Boland and Scott ( 1991 )

WI 95 5 Thien and Marcks ( 1972 )