Orchids of the Chicago Region

Chicago Region, Illinois, USA Orchids of the Chicago Region 1 Susan Kirt - Susan Kirt Photography and Chicago State University Habitat and flowering information are from the Flora of the Chicago Region by Gerould Wilhelm and Laura Rericha. Copywrite 2017 by the Indiana Academy of Science

1 Aplectrum hyemale 2 Calopogon tuberosus 3 Corallorhiza odontorhiza 4 Galearis spectabilis Putty-Root Eastern Grass Pink Late Coral Root Showy Orchis 24 May-4 June 20 June-9 August 18 August-9 November 2 May-4 June Rich wet-mesic to mesic Wet to mesic sand prairie, Mesic woodlands. Shown are Open mesic woodlands woodlands prairie fens and sphagnum bogs closed, self-fertilizing flowers

5 Cypripedium acaule 6 Cypripedium candidum 7 Cypripedium parviflorum 8 Cypripedium parviflorum Pink Lady’s Slipper White Lady’s Slipper var. makasin var. pubescens 19 May-21 June 23 April-2 June Small Yellow Lady’s Slipper Large Yellow Lady’s Slipper Sphagnum bogs and wet Prairie fens, wet to wet-mesic 18 May-13 June 30 April-13 June woodlands prairies and sand prairies Wet prairies, fens, sedge meadow Moist woodlands

9 Cypripedium reginae 10 Epipactis helleborine 11 Liparis lilifolia 12 Liparis loeselii Showy Lady’s Slipper Helleborine Purple Twayblade Green Twayblade 30 May-30 June 2 July-15 August 16 May-7 July 10 June-4 July Fens, wet prairies and swales Non-native European orchid. Disturbed habitats including Wetlands like fens, Woodlands, sand prairies, bogs, woodlands and cultivated fields marshes, prairies, and sphagnum savannas, and plantings bogs Chicago Region, Illinois, USA Orchids of the Chicago Region 2 Susan Kirt - Susan Kirt Photography and Chicago State University Habitat and flowering information are from the Flora of the Chicago Region by Gerould Wilhelm and Laura Rericha. Copywrite 2017 by the Indiana Academy of Science

13 Platanthera ciliaris 14 Platanthera clavellata 15 Platanthera flava var. 16 Platanthera lacera Orange Fringed Orchid Club-Spur Orchid herbiola Ragged Fringed Orchid 8 July-22 August 10 July-26 August Tubercled Orchid 5 June-7 August Acid wet to mesic sand prairies, Sphagnum bogs, sand prairies, 28 May-28 July Sandy areas. Wet to wet-mesic black oak savannas, and bogs marshes and wet woodlands Wet sand prairies and forest sand prairies, marshes, flatwoods

17 Platanthera leucophaea 18 Platanthera psycodes 19 Spiranthes cernua 20 Spiranthes lucida Eastern Prairie Fringed Orchid Purple Fringed Orchid Nodding Lady’s Tresses Early Lady’s Tresses 15 June-22 July 6 July-7 August 31 May-26 June 31 May-26 June Calcareous wet to mesic prairie Wet woodlands, flatwoods, seeps, Fens, pannes, wet to dry prairies, Calcareous wetlands, fens, remnants hydromesophytic swamp forests well-drained old fields moist sand prairies, black muck

21 Spiranthes magnicamporum 21 Spiranthes ovalis 23 Tipularia discolor 24 Triphora trianthophora Great Plains Lady’s Tresses var. erostellata Crane Fly Orchid Nodding Pogonia 31 August-5 October Oval Lady’s Tresses 24 July-August 5 August-4 September Prairie fens, wet dolomite and sand 23 September- 6 November Mesic woodlands in Northwest Rich woodlands prairies, gravel hill prairies Woodlands, old fields and ditches Indiana and Southern Michigan