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Isoetes, there are several species and varieties of flowering plants 

 on Stone Mountain which are rarely or never found elsewhere, as 

 might be expected from its isolated position and peculiar forma- 

 tion. Isoetes Engehnanni, var. Georgiana, is reported only 

 from Horseleg Creek, in the mountains of Floyd county, North- 

 west Georgia. 



There are no doubt several more species of ferns in the State 

 than have yet been discovered, for it has been comparatively 

 little explored botanically. Few if any of the other Eastern 

 States offer such an inviting field for botanical research. 

 Southbridge, Mass. 



VEINING IN THE MARSH SHIELD FERN AND OTHERS. 



IN distinguishing Dryopteris simulaia from the Marsh shield 

 fern (D. Thelypteris), one of the characteristics most relied 

 upon is the veining of the fronds. In normal simulata the 

 veins are simple and in Thelypteris they are forked. It may be 

 well to note, however, that instances are not wanting in which 

 these forms of veining are reversed. In his description of simu- 

 lata, Mr. Davenport mentions a plant with a few of the lower 

 veins once forked, and in Eaton's description of Thelypteris in 

 "The Ferns of North America," he remarks, 4i very often the 

 lower veins are thus forked and the upper ones are simple as in 

 Noveboracense." 



Miss Margaret Slosson, to whom we are indebted for calling 

 our attention to the foregoing facts, writes: "I found some time 

 ago a number of plants of Thelypteris, unusually fine ones, with 

 practically all the veins of every fertile frond simple, though I 

 detected here and there an occasional forked vein. The fronds 

 appeared normal in other respects and I could not find a single 

 simple vein in the sterile fronds growing plentifully from the 

 same rootstocks. I have since seen these simple veins in other 

 fertile Thelypteris fronds and fancy they are not uncommon." 

 All of which seems additional proof of the close relationship of 

 the two species. 



In this connection it is interesting to note that in writing of 

 Thelypteris, Eaton says, " Thelypteris is sometimes found with 

 most of the veinlets simple and the lower pinnae a little con- 

 tracted." This sounds very much as if the writer may have seen 

 the fronds of simulata and referred them to the other species 

 which it resembles. — W. N. C. 



