GYNANDRIA MONANDItfA. 191 



* * Anther parallel to the stigma, of 2 cells close together, permanent. 



261. LISTERA. Calyx spreading ; nectary without a spur, nearly 



flat ; petals spreading ; column without wings, 



* * Anther terminal, fixed. 



262. EPIPACTIS. Nectary without a spur, tumid underneath at 



the base, contracted in the middle, undivided at the end. 



I. MONANDRIA. 

 260. ORCHIS. 



* Knobs of the root roundish, undivided. 



1. O. Ufolia, leaves usually 2, elliptical; knobs of the roof 

 oval, taper-pointed ; lip of the nectary lanceolate, entire, about 

 half the length of its very long spur ; lateral calyx-leaves spread- 

 ing downwards. Butterfly Orchis. 



Hob. Marshy places, and also on heaths. Bogs below 

 Shores wood, and on Ancroft Moor, sparingly, Dr Thomp- 

 son. Doddington Moor, at the 13 mile-stone, plentiful. 

 Coldingham Moor. June. If 



The flowers are in a long loose spike, yellowish-white, and 

 in the evening exhale the scent of the sweetest honey- 

 suckle. I have gathered a curious specimen, in which the 

 nectary had 2 spurs and 2 lips of the usual size and length, 

 4 calyx leaves, and petals unusually elongated, while the 

 germen contained 4 capsules. 



2, O. mascula, knobs of the root oval; lip of the nectary 4- 

 cleft, crenate, spur obtuse ; calyx-leaves 3-ribbed, 2 lateral ones 

 reflexed upwards. Early Purple Orchis. 



Hab. Pastures frequent. Very abundant on our sea- 

 banks. May. if 



Salep is prepared principally from the roots of this species. 

 For the manner of its culture and preparation, I must 

 refer to Dr HUNTER'S Georgical Essays, York, 1777? and 



