Golden eye-grass 
Golden shower orchid 
Golden-Lipped Sobralia 
Gollmer's Habenaria 
Gomphichis goodyeroides 
Gomphichis macbridei 
Gongora armeniaca 
Gongora atropurpurea 
Gongora gratulabunda 
Gongora latisepala 
Gongora quinquenervis 
Govenia lagenophora 
Govenia liliacea 
Grammatophyllum multiflorum 
Grand Lepanthes 
Grape Hyacinth 
Grass Lily 
Grass-Leaved Flag 
Great camas 
Great Plains yucca 
Greater Butterfly-orchid 
Greater purple fringed orchid 
Greek Plowshare 
Green Bonnet Orchid