200 PLANTS OF MASSACHUSETTS. 



fully fringed as if finely bearded ; a North American genus of one 

 species, taken from Cymbidium ; petals 5, distinct, lip behind or 

 inverted, unguiculate. 



C. pulchellus. R. Br. Grass Pink. An elegant plant, with 

 grass-like leaves, and fine pink flowers at the summit, on a stem a 

 foot high ; leaf usually single, 8 inches long, sheathing at the base ; 

 flourishes in wet, marshy situations, and has an elegant appearance ; 

 June. Some of its bulbous roots were accidentally carried to 

 England, and the plant propagated from them. 



CORALLORHIZA. R. Br. 18. 1. 



From the resemblance of the root to coral ; lip produced 

 behind. 



C. odontorrhiza. Nutt. Coral-toothed Root. A small, yel- 

 lowish plant, 8-12 inches high, with small purplish flowers, and 

 lip dilated and finely spotted ; stem leafless, sheathed ; woods ; 



August. 



Listera. Br. 



L. cordata. R. Br. Has a 2-lobed lip, sessile ; stem about 6 

 inches high, with 2 opposite, roundish leaves, veined and smooth, 

 and with small, distant, green and purple flowers, irregular ; 

 swamps ; May ; often called Tway-blade ; named in honor of 

 Dr. Lister. Indigenous also to England. 



Neottia. Sw. 18. 1. 



As the fibres of the roots are singularly interwoven, the genus 

 has been named from the Greek for bird's nest ; a few species 

 whose spiked flowers stand like a spiral or screw, are hence 

 named by Richard, Spiranthes. 



JV\ tortilis. Sw. Ladies' Tresses. Has finely twisted flowers, 

 white and ringent, on a stem a foot high, and leafy towards the 

 base ; cold, wet meadows and pastures ; June. 



JV*. cernua. Sw. Nodding Tresses. Flowers greenish-white, 



