— ID— 



ISOETACE^E. 



Isoetes melanospora Engelm. An endemic species, 

 known nowhere else than De'Kalb County, where it has 

 been collected in shallow pools on top of Stone Mountain 

 by Canby, Underwood, Small and Boynton, and in similar 

 places on Little Stone Mountain by Small (see Bull. Torr. 

 Bot. Club, 21:300. 1894). 



Isoetes Engelmanni Georgiaxa Engelm. Also 

 endemic to Georgia, as far as known. But Mr. Eaton 

 considers this variety hardly worth maintaining, as its 

 extremes overlap those of the species. Two stations are 

 on record, both in the Palaeozoic region. It was dis- 

 covered by Dr. Chapman in Horseleg Creek, Floyd 

 County, and I found it once in Whitfield County (see 

 Bull. Torr. Bot. Club, 28:462. 1901). On Jan. 4, 1904, 

 I sought to re-discover the type-locality, and followed 

 Horseleg Creek from its mouth as far up as there was 

 any water in it at that time, a distance of about a mile. 

 The creek was very low, the water clear, and the bottom 

 everywhere visible ; and several other aquatic plants were 

 seen and recognized, but no trace of any Isoetes. 



Isoetes flaccida Shuttl. In swamps of pine-barren 

 streams in the coastal plain ; amphibious. Collected by the 

 writer in Laurens, Sumter, Bulloch and Coffee Counties, 

 and doubtless grows in many other places in South 

 Georgia. The var. rigida grows in pine-barren ponds in 

 Sumter County, and is distinct enough in habitat, if in no 

 other way. (See Bull. Torr. Bot. Club, 30:320. 1903). 



Isoetes Butleri Engelm. Palaeozoic region. Reported 

 from " Chickamauga Park, Dade County," by C. L. 

 Boynton (Biltmore Bot. Stud. 1:147. l 9° 2 )> but Chicka- 

 mauga Park is not in Dade County. 



The following species have been reported from Geor- 

 gia, or from states on both sides of it, but definite stations 

 for them are not known. 



Ophioglossum vulgatum L. Said to range southward 

 to Florida. 



Ophioglossum crotalophoroides Walt. Credited to 



