MARYLAND WEATHER SERVICE 



139 



Scirpus americanus 



Acnida cannabina 



Helenium autumnale 



Bidens trichosperma var. tenuiloba 



Cicuta maculata 



Impatiens biflora 



Sium cicutaefoliiuii 



Solidago sempervirens 



Scirpus polyphyllus 



Polygonum hydropiper 



Rudbeckia laciniata 



Galium triflorum 



Ilysanfhes dubia 



Bidens lac c is 



Sagittaria car in hi I is 



Pontederia cordata 



Carcx lurida 



Ilomalocenchrus oryzoides. 



The accompanying outline map (Fig. 6) will serve to illustrate 

 the rapid transition from brackish to fresh vegetation in the estu- 

 aries of the central part of the Chesapeake Bay. The area is at the 



Fig. 6. — Diagram of the Plant growth near Probasco's Landing, Talbot 

 County. 



mouth of a small stream which flows into Skipton Creek, Talbot 

 County, in the near vicinity of Probasco's Landing. The position 

 of the upland is indicated by U U. Area I. is a fringe of Spartina 

 polysiachya, Aster tenuifolius, Pluchea camphorala, Polygonum 



