MARYLAND WEATHER SERVICE 183 



Scirpus olneyi 



Scirpus robust us 

 Plucked campkorata 

 Spartina patens 

 Disticklis spicata 

 J uncus roemerianus 

 Lytkrum lineare 

 Gerardia purpurea 

 Sabbatia stellaris 

 Ptilimnium capillaccum 

 Lippid lanceoldtd 

 Kostcletzkya virginica 

 Ivd frutescens 

 Hibiscus mosckeutos 

 Pontederid corddtd 

 Baccharis lialim ifolia 

 Pdnicum virgdtum 

 Asclepids incarnata 

 Typka angustifolid 

 Polygonum kydropiper 

 Pdnicum wdlteri 

 Zizania dqudticd 

 Lobelid cardinalis 

 Eupalorium coelestinum 

 Alnus rugosd 

 Myricd cdrolinensis 

 Rosd Carolina 

 Sagittarid Idtifolid 

 Sdururus cernuus 

 Bidens beclcii. 



A few species might well be styled "facultative halophytes," for 

 they are found in both salt and fresh stations, for instance, Hibiscus 

 and Asclepids incarnata. It has been shown by the writer* that the 

 leaves of such plants have a different structure in the two habitats. 



"Chrysler, M. A. Anatomical notes on certain strand plants. 

 Gazette, vol. xxxvii, 1904, pp. 461-464. 



