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Incaea
India
Ingeara (1)
Ingramara
Inobulbon
Inti
Ioncidium
Ione
Ionettia (7)
Ionmesa (3)
Ionmesettia (2)
Ionocentrum (1)
Ionocidium (7)
Ionomesidium (2)
Ionopsis (4)
Ionparettichilum
Ionumnia (4)
Ipsea (2)
Ipseglottis (1)
Irenea
Iridorchis
Iridorkis
Irvingara (2)
Isabelia (6)
Isadendrum (1)
Isanitella
Isaoara
Ischnocentrum
Ischnogyne
Isias
Isochilostachya
Isochilus (1)
Isotria
Itaculumia
Iwanagaara
Iwanagara
Ixyophora
Izumiara
Jackfowlieara (57)
Jacquinara
Jacquiniella
Jamaiciella
Jamesonara
Jansenia
Janssenara
Janssensara (8)
Jantha
Jasenara (1)
Javieria
Jeaneara (1)
Jejewoodia
Jejosephia
Jellesmaara (1)
Jenmania
Jennyella
Jensoa
Jesupara
Jewellara
Jimenezara
Jimensia
Jimrobertsara (2)
Jisooara
Joannara (24)
Johnara
Johnkellyara
Johnlagerara (8)
Johnsonara
Johnyeeara
Jolyara
Jomkhwanara
Jomkhwansaeleeara (2)
Jonesiopchis
Jonesiopsis
Jonorchis
Josephara
Josephia
Jostia
Jouyella
Julesara (1)
Jumangis (1)
Jumanthes (2)
Jumellea (17)
Jungara
Kaedingara
Kaempferia
Kaenratanaara (1)
Kagawaara
Kagawara
Kailaara (1)
Kalakauara (1)
Kalimantanorchis
Kalimpongia
Kalopternix
Kamemotoara
Kanetsunaara
Kanzerara (1)
Katherinea
Kaurorchis
Kautskyara (1)
Kawamotoara
Kawanishiara
Keesangaara (1)
Keferanthes (3)
Keferella (1)
Keferhyncha (2)
Kefericzella (10)
Keferollea
Kefersteinia (13)
Keforia (2)
Keftorella (7)
Kegelia
Kegeliella (1)
Kegeopea (1)
Keishunhattoriara
Kennethbealeara
Keranthus
Kerchoveara (1)
Kerigomnia
Keyesara (6)
Khiamara (1)
Kiattanara (1)
Kimballara
Kinetochilus
Kingidium (6)
Kingiella (4)
Kingistylis
Kionophyton
Kipandiorchis
Kippenara
Kirchara
Kitigorchis (1)
Kleberiella