I902] 



THE ECOLOGY OF THE DELAWARE COAST 



297 



of former swamps. Southward the depression narrows and for 

 some distance is occupied by a road. Farther south it broadens 

 out into a bare rain-washed area of hard baked soil with few 

 plants, such as Paniciim sphaerocarpon^ Antennaria plantaginifolia ^ 

 Io7iactis linariifolius , Diodia teres , Plantago aristata , etc. This 

 bare space passes seaward into a wet meadow which in turn 

 slopes toward the dunes, Sparti?ia patens replacing the meadow 



Fig. 5. — East shore of Silver lake, showing at extreme right windward faces of 

 dunes moving eastward; the swampy character of shore of the meadow extending 

 northward. 



forms, among which may be mentioned Sefiecio tomeiitosKS, Hier- 

 acium Gronovii, Gnaphaliiim piirptirenmy Viola sagittata, and giving 

 place to Ammophila toward the crest of the dunes, which here 

 slope directly to the beach, no low dunes being present. 



North of Rehoboth the two series open out in a V, near the 

 apex of which lie Hudsonia dunes and swamps, one of which 



n*- 



is a 



pine 



swam 



p. In this was found the typical pine swamp 

 flora, OsmUTida regalis, Dryopteris Thelypteris {^Aspidium Thelypteris)^ 

 Oxycoccus macrocarpiis {yacciniwn tnacrocarpon) , with Xyris flexu- 



