173 



" One might have thought thou \vert some vagrant bee, 



Erst marked by Flora, settled on a stem. 

 Who, sportively, the quaint device to see, 



Transformed the insect to a floral gem. 

 Still springing fresh, through all succeeding years, 

 Gay as thy sister flowers bright as thy winged compeers !" 



O. S. Late Spider Oplirys, the Common Spider Ophrys, and the Fljr 

 Ophrys, which much resemble the insects whose names they bear. 



TWAY-BLADE. LISTERA. 



COMMON TWAY-BLADE. Lister a ovata. 



Plate 13, fig. 20. 



A very curious, if not a beautiful plant, of a very frequent 

 occurrence in woods and meadows, growing a foot or more 

 high. Its names Tway-blade, or Two Leaves, leads us to 

 expect no more than this number they are ovate or oblong 

 in form, opposite to each other on the lower part of the stem ; 

 while on the upper part of it are numerous, scattered flowers, 

 of a greenish-yellow color, without spurs, and attended by 

 round, short seed vessels or germens, and short, very small 

 bracts. The lower lip of the flower is two-cleft, and rather 

 bent back. The other two petals smaller and narrow, and the 

 three calyx leaves ovate, and not opening very wide. It flowers 

 in May, June, and July. The pollen masses are in a crest or 

 hood, in the upper part of the flower. 



O. S. Heart-Leaved Tway-blade, and Common Bird's-Nest, so called 

 from the root being of many fibres entangled together, like a bird's nest 



