Choriso Bog Orchid: Platanthera chorisiana (Synonyms: Habenaria chorisiana, Limnorchis chorisiana, Pseudodiphryllum chorisianum) -
Short-spurred Bog Orchid, White Bog-orchid: Platanthera dilatata var. albiflora (Synonym: Habenaria dilatata var. albiflora) -
Boreal Bog-orchid, White Bog Orchid, White Rein Orchid, Scent, Bottle Orchid, Leafy White Orchis, Tall White Northern Bog Orchis: Platanthera dilatata var. dilatata (Synonyms: Habenaria dilatata, Habenaria dilatata var. angustifolia, Habenaria dilatata var. dilatata, Limnorchis dilatata) -
Long Spurred Bog Orchid, Boreal Bog-orchid, White Bog Orchid, Sierra Rein Orchid, Leafy White Orchis: Platanthera dilatata var. leuchostachys (Synonyms: Habenaria dilatata var. leuchostachys, Habenaria leucostachys, Limnorchis graminifolia, Limnorchis leucostachys, Limnorchis leucostachys var. leucostachys, Limnorchis leucostachys var. robusta, Platanthera leucostachys ) -
Elegant Rein Orchid, Elegant Piperia, Hillside Rein Orchid: Platanthera elegans ssp. elegans (Synonyms: Habenaria elegans, Habenaria greenei, Habenaria unalascensis var. maritima, Piperia elegans ssp. elegans) -
Dense Orchid, Denseflower Rein Orchid, Dense-flower Rein Orchid, Green-flowered Piperia: Platanthera elongata (Synonyms: Habenaria unalascensis ssp. elata, Habenaria unalascensis var. elata, Piperia elegans var. elata, Piperia elongata) -
White-flowered Piperia, White-flower Rein Orchid, White-lip Rein Orchid: Platanthera ephemerantha (Synonyms: Habenaria unalascensis, Piperia candida) -
Northern Green Bog-orchid, Northern Green Bog Orchid: Platanthera huronensis (Synonyms: Habenaria hyperborea, Limnorchis media, Orchis huronensis, Platanthera hyperborea, Plantanthera xmedia) -
Large Round-leaf Orchid: Platanthera orbiculata (Synonyms: Habenaria orbiculata, Orchis orbiculata) -
Few-flowered Bog Orchid, Canyon Bog Orchid, Sparse-flowered Bog Orchid, Few-flowered Rein Orchis: Platanthera sparsiflora (Synonyms: Habenaria dilatata, Habenaria sparsiflora, Habenaria sparsiflora var. laxiflora) -
Canyon Bog Orchid, Needle-spur Green Orchid, Slender Bog Orchid, Slender Bog Orchis: Platanthera stricta (Synonyms: Habenaria borealis var. viridiflora, Habenaria saccata, Habenaria stricta, Limnorchis stricta, Limnorchis viridiflora, Platanthera gracilis, Platanthera hyperborea var. viridiflora, Platanthera saccata) -
Suksdorf's Piperia, Royal Rein Orchid: Platanthera transversa (Synonyms: Habenaria elegans, Habenaria unalascensis var. elata, Piperia transversa) -
Alaska Rein Orchid, Short-spurred Orchid, Short-spurred Piperia, Slender-spire Orchid: Platanthera unalascensis (Synonyms: Habenaria schischmareffiana, Habenaria unalascensis, Piperia unalascensis, Platanthera foetida, Spiranthes unalascensis) -