210 14.7. Listera. 21. ORCHIDEiE. PlendLpk 



1. Listera ovata. Ovate tway blade. 

 Leaves ovate. 



Bifolium majus, sive Ophris major quibusdam, Raii Syn. 385, 1. 



Ophris bifolia, Gtr. ein. 403. 



Bifolium sylvestre vulgare, Park. 504. 



Ophrys ovata, Lin. S. P. 1340, 



Epipactis ovata, Swartz 162. 



Listera ovata, R. Brown in Ait. H. Keie. 5,201. 



Neottia lati folia, Richard Mem. Mus, 4, 59. 



Common tivayblade. 



Woods and meadows; perennial; June and July. 

 Stem 12 in. high, 2-leafed; flowers pedicelled, green. 



2. Listera cordaia. Heartleafed tivayllade. 

 Leaves heartshape. 



Bifolium minimnm, Raii Syn. 385,2. 



Ophrys cordata, Lin. S. P. 1340. 



Epipactis cordata, Swartz 162, 



liistera cordata, R. Brown in Ait. H. Kew. 5, 201. 



Neottia cordata, Richard Mem. Mus. 4, 59. 



Least twayblade. 



Spongy Alpine heaths ; perennial ; July 

 Stem 6 in. high ; flowers greenish. 



XIV. 148. CEPHALANTHERA. Richard. 



Bastard-hellelvre. 

 Ovary sessile, bald, not twisted; perigonium upright, 

 connivent; Up spurless, clasping, interrupted; hypochi- 

 lium gibbous at the back; epichilium bent back at the 

 tip ; gynostemium long, straight ; gynizus transversely ob- 

 long, prominent; rostellum 0; anther marginal, elliptical 

 roundish, fastened to the back of the gynizus by its base, 

 the other part overtopping the gynizus, the cells growing 

 forwards on a connective wider than themselves; pollen 

 in linear masses, adhering only to the back of the gynizus 

 by their base; vesicles simple. — Rhizo77ia creeping; fibres 

 fleshy ; stem leafy ; leaves amplexicaul, 2-rowed, lanceolate, 

 ribbed; spike loose; flowers upright, hracteate; ovary 

 linear. 



1, Cephalanthera grandiflora. Largeflower bastard- 



hellebore. 

 Leaves oblong, lanceolate, sessile; bractece longer than 

 the flower ; lip obtuse, shorter than the sepales. 



