Table 3.

Minimum genes required for seven orchid species with extremely degraded plastomes (Epipogium aphyllum, E. roseum, two Gastrodia elata, Lecanorchis japonica, L. kiusiana, and Rhizanthella gardneri).

Scientific Name Gene	Epipogium aphyllum	Epipogium roseum	Gastrodia elata	Gastrodia elata	Lecanorchis japonica	Lecanorchis kiusiana	Rhizanthella gardneri	Other Orchids	Notes
accD	+	+	+	+	+	+	+	116/117	Vanilla aphylla (Pseudogene)
clpP*	+	+	+	+	+	+	+	117
rpl2	+	+	+	+	+	+	+	113/117	Anoectochilus emeiensis (Absent), Goodyera procera (Absent), G. schlechtendaliana (Absent), G. velutina (Absent)
rpl14*	+	+	+	+	+	+	+	117
rpl16*	+	+	+	+	+	+	+	117
rpl36*	+	+	+	+	+	+	+	117
rps2*	+	+	+	+	+	+	+	117
rps3*	+	+	+	+	+	+	+	117
rps4*	+	+	+	+	+	+	+	117
rps7*	+	+	+	+	+	+	+	117
rps8*	+	+	+	+	+	+	+	117
rps11*	+	+	+	+	+	+	+	117
rps14*	+	+	+	+	+	+	+	117
rps18	+	+	+	+	+	+	+	115/117	Neottia nidus-avis (Absent), Goodyera procera (Absent)
rps19	+	+	+	+	+	+	+	116/117	Goodyera procera (Absent)
rrn5*	+	+	+	+	+	+	+	117
rrn16*	+	+	+	+	+	+	+	117
rrn23*	+	+	+	+	+	+	+	117
trnC-GCA*	+	+	+	+	+	+	+	117
trnfM-CAU	+	+	+	+	+	+	+	115/117	Ophrys fusca subsp. iricolor (Absent) Ophrys sphegodes (Absent)

Bold gene name with an asterisk indicates that all 124 orchid species share the gene.