1 76 Rhodora [August 



NOTES ON MARYLAND PLANTS. 

 Hubert Lyman Clark. 



During August, 1903, it was my good fortune to spend several 

 weeks in botanizing on the Eastern Shore, Md. Most of the field 

 work was done in Talbot County, about three miles south of Easton, 

 where the country is much cut up by so-called "creeks" which con- 

 tain brackish or salt water and are really small branches of Chesa- 

 peake Bay. There is very little really fresh water in the way of either 

 ponds or streams, in that vicinity, nor are there many springs. The 

 woods are largely of oak of several species but there is considerable 

 pine still standing. Besides botanizing around Easton, I made two 

 excursions to Ocean City, Md., and investigated the woodland lying 

 between that city and Berlin. The flora along the railroad track in 

 that region is very interesting and is quite characteristically that of 

 pine barrens. Among the many interesting species collected here, 

 those which were of most interest to me were Polygala hitea, Diodia 

 virginiana, Ludwigia hirtella, Pluchea hifrons, Ahiits maritima, Sagit- 

 taria laiici/o/ia, Xyris caroliniatia, Woodwardia augustifolia and Lyco- 

 podium alopecuroides. 



Both in Talbot County and near Ocean City, plants were found, 

 which seemed to me sufficiently different from the descriptions given 

 in the botanies to raise a question as to the correctness of my iden- 

 tifications. They were therefore sent to the Gray Herbarium of Har- 

 vard University where Dr. J. M. Greenman kindly examined them, 

 and I am under great obligations to him for helping me in my diffi- 

 culty. Among these plants the following seem worthy of special 

 note. 



AspiDiUM CRISTATUM CLiNTONiANUM D. C. Eaton. Several plants 

 of this handsome fern were found in a little glade, two or three miles 

 southeast of Easton. The discovery extends the recorded range of 

 this variety considerably to the south. 



PoTAMOGETON MvsTicu.s Morong, This pond-weed was found 

 growing in company with P. pusillus, P. marinus, P. petmsyhanicus 

 and Naias Jiexilis in a shallow body of water, which was fresh at its 

 inland end but opened into the ocean, near Ocean City, Md. As 

 this species has not been collected previously south of Nantucket, its 

 occurrence in Maryland seems quite remarkable. 



