464 



ORCHIDE.E 



Strongly ribbed Jeeves ; and a long raceme of yellowish-green 

 flowers witli a 2-lobe<l li[). — Woods and^ orchards ; common. — Fl. 

 May — July. Perennial. 



6. Spiranthe.s (Lady's Tresses). — Root tuberous; stem leafy; 

 flowers in a spirall)- twisted spike ; ///> not spurred, united to the 



lIsteka ov.vi'.a ( /V 



yhiadc). 



base of the column ; pollen powdery. (Name from the Greek 

 spcira, a spiral, anihos, a flower,) 



I. S. aiitmnndUs (.Autumn Lady's Tresses). — Root of 2 or 3 

 ovoid tubers ; stem 4 — S in. high, slf nder, slightly pubescent ; 

 radical leaves ovate, acute ; flowers in a close spiral, white, 

 fragrant in the evening. — Dry downs ; not uncommon. The 

 (lowers are arranged in a single row and the spiral turns either 

 fi'om left to right or from right to left. The leaves form a tuft 



