APPENDIX. 



Sisyrinchium graminoides Bicknell. Stout Blue-eyed Grass. In meadows. 

 Sisyrinchium Atlanticum Bicknell. Eastern Blue-eyed Grass. Tullytown. 



Order 7. ORCHIDALES. 

 Family i. Orchidaceae Lindl. 



Cypripedium acaule Ait. Purple Ladies' Slipper. Moccasin Flower. In sandy or 

 rocky woods. 



Cypripedium hirsutum Mill. Large Yellow Ladies' Slipper. Lower Black's Eddy, 

 Dr. E. Newlin Williams; Argus, Albrecht Jahn. 



Cypripedium parviflorum Salisb. Small Yellow Ladies' Slipper. Haycock. 



Galeorchis spectabilis (L.) Rydb. Showy Orchis. In rich woods. 



Perularia flava (L.) Rydb. Small Pale-green Orchis. Buckingham, (M. C); Rock- 

 hill; Nockamixon, Dr. E. Newlin Williams. 



Gymnandeniopsis clavellata (Michx.) Rydb. Green Wood Orchis. Point Pleasant, 

 (M. C). 



Blephariglottis cristata (Michx.) Raf. Crested Yellow Orchis. Langhorne, I. C. 

 Martindale. 



Blephariglottis lacera (Michx.) Rydb. Ragged Orchis. Wet woods in upper end, 

 (M. C). 



Blephariglottis psycodes (L.) Rydb. Purple Orchis. In the upper end. 



Pogonia ophioglossoides (L.) Ker. Rose Pogonia. Rockhill. 



Isotria verticillata (Willd.) Raf. Whorled Pogonia. Andalusia, I. C. Martindale; 

 Buckingham, Dr. E. Newlin Williams; Tullytown, Joseph Crawford. 



Triphora trianthophora (Sw.) Rydb. Nodding Pogonia. Near Quakertown. 



Limodorum tuberosum L. Grass Pink. Calopogon. Springfield, (M. C.) 



Gyrostachys plantaginea (Raf.) Britton. Ladies' Tresses. Andalusia, I. C. Martin- 

 dale; Point Pleasant; Upper Black's Eddy, Dr. E. Newlin Williams. 



Gyrostachys cernua (L.) Kuntze. Nodding Ladies' Tresses. In meadows. 



Gyrostachys simplex (A. Gray) Kuntze. Little Ladies' Tresses. Penn Valley, 

 Joseph Crawford. 



Gyrostachys gracilis (Bigel.) Kuntze. Slender Ladies' Tresses. In woods. 



Peramium pubescens (Willds.) MacAI. Rattlesnake Plantain. In dry woods. 



Leptorchis liliifolia (L.) Kuntze. Twayblade. In woods and thickets. 



Leptorchis Loeselii (L.) MacM. Loesel Twayblade. Yardley, A. B. Kauffman. 



Aplectrum spicatum (Walt.) B. S. P. Adam-and-Eve. Haycock, Rockhill, (M. C.) 

 Jericho Hill, Dr. E. Newlin Williams. 



Corallorhiza odontorhiza (Willd.) Nutt. Small-flowered Coral-root. In woods. 



Corallorhiza multiflora Nutt. Large Coral-root. Haycock. (M. C); Holicong, Dr. 

 E. Newlin Williams. 



Subclass 2. DICOTYLEDONES. 

 -I , Series i. CHORIPETALAE. 



Order i. PIPERALES. 

 Family i. Saururaceae Lindl. 

 Saururus cernuus L. Lizard's-tail. In swamps and streams. 



