FLORA OF THE DISTRICT OF COLUMBIA. 129 



3. HABENARIA Willd. 



Lip not fringed nor deeply lobed; racemes narrow; flowers small and greenish. 

 Lip hastate, with a tubercle in the center at the base; spur slender, straight. 



1. H. flava. 

 Lip 3-toothed at the apex, not tubercled at the base; spur clavate, curved. 



2. H. clavellata. 

 Lip fringed or deeply lobed; racemes broad; flowers large and showy. 

 Lip fringed but not lobed. 

 Flowers orange-yellow. 

 Lip ovate, about 5 mm. long; spur about half as long as the ovary. 



3. H. crista ta. 



Lip oblong, about 10 mm. long; spur longer than the ovary 4. H. ciliaris. 



Flowers white 5. H. blephariglottis. 



Lip deeply 3-lobed. 



Flowers greenish white; lobes of the lip lacerate-fringed 6. H. lacera. 



Flowers violet-piu-ple; lobes of the lip cut-toothed, not fringed. 



7. H. peramoena. 



1. Habenaria flava (L.) A. Gray. . 



Moist meadows. June. Eastern U. S. {H. virescens Spreng.; Perularia flava 

 Farwell.) 



2. Habenaria clavellata (Michx.) Spreng. 



Bogs, usually in shade. July. Eastern U. S. (H. tridentataKook.; Gymnaden- 

 iopsis clavellata Rydb.) 



3. Habenaria cristata (Michx.) R. Br. 



Known from only one locality, a bog near Suitland. Southern states, north to N. J. 

 (Blephariglottis cristata Raf.) 



4. Habenaria ciliaris (L.) R. Br. Yellow fringed orchis. 

 Bogs, usually in open places. July-Aug. Eastern U. S. (Blephariglottis ciliaris 



Rydb.) 

 A pale form has been found several times in the vicinity of Hyattsville. 



6. Habenaria blephariglottis (Willd.) Torr. White fringed orchis. 



Bogs, usually with the last species. July-Aug. {Blephariglottis blephariglottis 

 Rydb.) 



6. Habenaria lacera (Michx.) R. Br. Ragged fringed orchis. 

 Fairly common in damp meadows. June. Eastern U. S. {Blephariglottis lacera 



Farwell.) 



7. Habenaria peramoena A. Gray. Purple orchis. 

 Ditches and wet meadows. July-Aug. N. J. to Mo. and Ala. {Blephariglottis 



peramoena Rydb.) 



Our handsomest orchid . 



4. POGONIA Juss. 



1. Pogonia ophioglossoides (L.) Ker. Rose pogonia. 



Bogs. June. Eastern U. S. 



Flowers occasionally almost white; fragrance delicate and delightful. 

 Pogonia divaricata (L.) R. Br. is listed by Brereton. 



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