GYNANDUIAMONANDRIA. 193 



261. LISTERA. 



1. L. ovata, stem with only a pair of elliptical opposite leaves ; 

 flowers yellowish-green, numerous ; nectary with 2 linear-oblong 

 nearly parallel lobes ; column with a posterior hood. Common 

 Twayblade. 



Hob. Moist pastures, not uncommon. Haiden dean. 

 Woods below Claribed Mill, Dr Thompson. Boggy 

 ground at the four mile-stone on the Ayton road. June, 

 July. 7/ 



2. L. cordata, stem with only 2 heart-shaped opposite leaves ; 

 flowers greenish-brown, small, scarcely more than 10 ; nectary 

 with 4 lobes. Heart-leaved Twayblade* 



Hob. " Bunele Wood,'* Berwickshire, Rev. A. Baird. 

 July, Aug. If. 



3. L. Nidus -avis, leaves none ; stem clothed with sheathing 

 scales ; flowers pale brown, in a many-flowered cylindrical clus- 

 ter ; nectary with 2 spreading lobes. Bird's-Nest Listera. 



Hob. Woods at Netherbyres, Berwickshire, Rev. A. 

 Baird. May, June. 7/ 



2G2. EPIPACTIS. 



1. E, palustris, leaves lanceolate, clasping the stem ; flowers 

 drooping, large, white tinged with purple ; lip rounded, obtuse, 

 crenate, as long as the petals, with a notched protuberance on 

 the disk. Marsh Helleborine. 



Hab. Rough boggy places. Haiden dean. Field below 

 the Old Lamberton Toll. In the Pond field above Spin* 

 dlestone. July. I/. 



