SMALL- FLOWERED CORAL ROOT, C. odontorhiza, is 

 much smaller. 



CRESTED CORAL ROOT, Hexalectris aphyllus, is a large 

 Southern, purple-brown genus much like these last. 



LARGE TWAYBLADE, Leptorchis lilii folia, an early sum- 

 mer orchid, has showy, purplish-green flowers, in a ter- 

 minal raceme, with two large, bright leaves from the root. 

 It flourishes east of the Mississippi. 



LOESEL'S TWAYBLADE, L. Loeselii, is a smaller, more 

 Northern species. 



BROAD-LIPPED TWAYBLADE, Listera convallarioides, 

 HEART-LEAVED TWAYBLADE, L. cordata, and SOUTHERN 

 TWAYBLADE, L. australis, have small flowers with lips, 

 long in proportion, and bear their two leaves opposite at 

 the centre of their stems. They grow in woods and bogs 

 from the Northern States southward. 



PLATE XIV, A 



LADIES' TRESSES, Gyrostachys cernua (Spiranthes cer- 

 nua}. Root. Fleshy, forked. Stem. 6'-2$' high, 

 simple. Leaves. Grass-like, turning above to pointed 

 bracts. Flowers. White or yellowish, fragrant; de- 

 flexed in a twisted, terminal, bracted spike. Perianth. 

 Of four divisions. The upper sepal connected with the 

 two arching petals. The lip crinkled. Column (c). 

 Arched, bearing the anthers (a) at the back. The stigma 

 (s) has a beak which covers the anther. Ovary (0). 



A dainty little plant blooming in meadows and swamps, 

 from August to October, east of the Mississippi. It has a 

 lily-of-the-valley like fragrance. Its plaited appearance 

 gives it its common name. 



PLATE XIV, B 



GRASS-LEAVED LADIES' TRESSES, G. praecox. Root, 

 Stem, Leaves. Much as above, but smaller and more 

 slender. Flowers. Like G. cernua, but smaller and in 

 a more spiral spike. Perianth and Column. As above. 



This plant grows, in late summer, from New York 

 southward. 



HOODED LADIES' TRESSES, G. romanzoffiana, WIDE- 

 LEAVED LADIES' TRESSES, G. plantaginea, and FRAGRANT 



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