24 ORCHIDACEM 



ties near the base, margin denticulate, or undulate. Column com- 

 pressed, somewhat winged, about half as long as the upper sepal. 

 Anther operculate, 4-celled. Polhnia 4. 



Corallorrhiza Wisteriana, Conrad, may be distinguished from 

 C. odontor^liiza, Nutt., with which it is often confused, by its 

 larger flowers with more or less spreading perianth, laxer inflores- 

 cence, oblong-elliptic capsules, and by its period of anthesis, which 

 ranges from February to May, the plants blooming earlier in the 

 year as the southern limit of distribution for the species is ap- 

 proached. It is not a common plant northward, and in herbaria 

 is represented principally by specimens from the Southern States. 

 C. Wisteriana appears to be identical with sjiecimens determined 

 as C. odontorhiza by A. W. Chapman, and it is perhaps owing 

 to this confusion that Chapman redescribed C. odontorhiza as 

 a new species, namely C. micrantha. Specimens of C. micran- 

 tha, Chapm., agree so well with C. odontorhiza, and Chapman's 

 description of C. micrantha describes C. odontorhiza so clearly, 

 that quite evidently C. micrantha was named because G. Wiste- 

 riana, Conrad, was unknown to Chapman as such. Furthermore, 

 Chapman gives the blooming season of C. micrantha as Au- 

 gust and September, and of his C. odontorhiza as February and 

 March. 



GEOGRAPHICAL DISTRIBUTION 



I have seen specimens from the following localities : 



Florida: Hibernia, March, 1869, Wm. M. Canhy. — Merritt's 

 Island, Indian River, February, 1881, A. H. Curtiss (no. 

 2816). — Gainsville, March, 1876, A. P. Garher, M. D. — 

 Oviedo, February 3, 1904, T. L. JfeacZ. — June, 1904 (in 

 fruit), A. A. Eaton. 



Tennessee : Knoxville, April 21, 1889. — Rich woods. May, 1897, 

 A. Ruth (no. 10018) ; June, 1898, Ruth (no. 151). — Woods, 

 Jackson, March 28, 1893, S. M. Bain (no. 456). 



Alabama : Hatch, 



