Jones: Flora of Illinois, 36. Orchidaceae 99 



of auth., not Mill.; C. parviflorum var. pubescens (Willd.) Knight} ..-. 

 C. parviflorum Salisb. 



X C. andrewsii Fuller (C. candidumyC^parviflorum) , with cream-colored 

 lip 2-2.5 cm. long, and purple sepals and petals, has been collected near Spring 

 Bay, Woodford Co., V. H. Chase 4024. 



2. Orchis L. 



O. spectabilis L. Showy Orchis. Woods, rare. May-June. [Gakorchis spec- 

 tabiiis (L.) Rydb.} 



3. Habenaria Willd. 



(Perularia Lindl.; Platanthera Rich.; Coeloglossum Hartm. ; Denslovia 

 Rydb.; Limnorchis Rydb.; Lvsias Salisb.; Blephariglottis Raf.) 



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, n. 111., 



rare. 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, Lake, Cook, Peoria, 

 Tazewell, and Wabash counties. June-July. Tubercled Orchid 

 H. flava (L.) Gray 



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

 Woodford and Tazewell counties. June-July. [H. hyperborea Am. 



auth., not 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, n.e. 111. July-Aug. Wood 

 Orchid H. clavellata (Michx.) Spreng. 



2. Stem scapiform; leaves basal, orbicular, 3-10 cm. broad; lip lanceolate, 

 entire, about 1 cm. long; flowers yellowish green; rich woods, n.e. 111., 

 rare. Jime-July. Round-leaved Orchid H. hookeri Torr. 



L Lip fringed or deeply lobed; flowers large and showy. 



6. Flowers orange-yellow; lip oval, about 1 cm. long, the conspicuous fringe 

 3-5 mm. long; swampy ground, n. 111., rare. July-Aug. Yellow Fringed 



Orchid H. ciltaris (L.) R. Br. 



6. Flowers whitish, greenish, or purplish; lip more or less 3-lobed, each lobe 

 fringed or denticulate. 

 7. Petals entire; flowers greenish; lobes of the lip narrow, few-fringed; 



swamps, rare, n.e. 111. June-July. Green Fringed Orchid 



H. lacera (Michx.) Lodd. 



7. Petals denticulate; lobes of the lip fan-shaped. 



8. Lip deeply fringed and 3-parted, the fringe 2-5 mm. long. 



9. Flowers white, the spikes relatively few-floweted; wet meadows. 



