1 - I THE PLANT LIFE OF MARYLAMi 



moist sandy habitats of the Eastern Shore, and because of the south- 

 ern range of their predominant species. They differ from the 

 Upland Swamps in the absence of the Pine Barren class of her- 

 baceous plants, and they differ from the Stream Swamps in the 

 absence of the Red Maple, the Winterberry and several of their 

 associates. The Hornbeam is an uncommon tree in the Coastal 

 Zone, where it is found only in Flood Plains, and it is a striking 

 fact that it here occurs in the same habitat with several trees of 

 southern range which are not found outside the Coastal Zone. 



Upland Swamps. — The Upland Swamps of the Wicomico terrace 

 are found only in northern Caroline County and the north-eastern 

 part of Queen Anne's County in the vicinity of Marydel, Barclay and 

 Sudlerville. The soils are chiefly sandy loams and silt loams of the 

 Norfolk and Portsmouth series, with a high content of organic mat- 

 ter and rendered acid by the poor drainage. The arborescent flora is 

 distinctly different from that of the Sandy Loam Upland Swamps, 

 and more nearly related to that of the Clay Upland Swamps. Its 

 trees are Black Gum, Swamp Oak, Red Maple, Sweet Gum, Wil- 

 low Oak and White Oak, all of which appear to occur in about 

 equal abundance. Holly, Beech, Magnolia and the Swamp Poplar 

 are infrequent. The shrubs and herbs of these Upland Swamps 

 resemble those of the River Swamps, among the most notable 

 species being Ilea virginica, Aronia aroutifolia, Azalea viscosa var. 

 r/lauca, Polygonum amphibium, Utricularia inflata and Proser- 

 pinaca palusiris. 



Swamp Vegetation. 



eivee swamps. 



The River Swamps are characterized chiefly by the occurrence 

 of the Bald Cypress, which is in all places the dominant tree, occur- 

 ing in some localities in almost pure stands. Outside the margins 

 of the Pocomoke River and its two chief tributaries the Bald Cy- 

 press occurs in Upland Swamps in a few localities in Worcester 

 County, is frequent along the Wicomico River, and is known from 

 two localities in the Western Shore District of the Coastal Zone. 



