140. Orchidaceae 295 



ii. 111., rare. Showy Lady's Slipper [C. spectabile Salisb.] 



C. reginar Walt. 



2. Sepals lanceolate, attenuate, twisted, equalling or exceeding the 



3. Lip yellow, 2-5 cm long; wooded hillsides, or in ravines, or 

 bogs, rare. May-June. Yellow Lady's Slipper [C. puhescens 

 Willd.; C. parviflorum var. pubescens (Willd. ) Knight] 



C. parviflorum Salisb. 



. 3. Lip white or cream, 2-2.5 cm long. 



4. Sepals and petals solid madder-purple; lip creamy white: 

 near Spring Bay, Woodford Co., V. H. Chase 4024. [C. 



candidum X parviflorum A.M. Fuller] 



..X C. andrcwsii A.M. Fuller 



4. Sepals and petals greenish-yellow, usually purple-lined; lip 

 waxy-white; bogs, swamps, or wet ground on "original 

 prairie'' in the northern half of 111. May-June. White 



Lady's Slipper C. candidum Muhl. 



1. Flowering stem leafless; basal leaves 2; woods. Cook Co., rare; 

 May C. acaule Ait. 



2. Orchis L. 



O. spectabilis L. Showy Orchis. Woods, occasional. May-June. 



3. Habenaria Willd. 

 1 . Lip not fringed or deeply lobed ; flowers greenish. 

 2. Stem with one to several leaves. 



3. Leaves several; bracts mostly longer than the flowers. 

 4. Lip not entire. 6-8 mm long. 



5. Lip 3-toothed at apex; spur shorter than lip; rich woods, 

 rare, n. 111., extending southward to Peoria Co. May- 

 June. Long-bracted Orchid 



H. bracteata (Muhl.) R.Br. 



5. Lip with a median tubercle and a tooth on each side 

 near the base; spur longer than the lip; wet ground, 

 rare; Cook, Hancock, Kankakee, Lake, Ogle, Peoria, 

 St. Clair, Tazewell, and Wabash counties. June-July. 

 Tubercled Orchid H. flava (L.) R.Br. 



4. Lip entire, shorter than the slender spur; swamps, rare; 

 Cook, Kane, Lake. Peoria, Tazewell, and Woodford 

 counties. June-July. [H . hypcrbona sensu Am. auth.. 



non Orchis hyperborea L.] 



H. huronensis (Nutt. ) Spreng. 



"3. Leaves 1 or 2; bracts shorter than the flowers; lip entire at 

 base, cuneate, truncate, 3-5 mm long; wet ground, rare; 

 Cass, Cook, Kankakee, and Lake counties. July-Aug. 

 Wood Orchid H. clavellata (Michx.) Spreng. 



