ILLUSTRATIONS. 



FACING PAGE 



Map of Maryland showing the Floristic Zones and Ecological 

 Districts 21 



Pig. 1. — View showing depression in Clay Upland swamp, 

 Isnardia at the left, Myriophyllum at the right and Dan- 

 thonia in the background, near Castle Haven, Dorchester 

 County 30 



Fig. 2. — View showing sandhills along Marshyhope Creek, 



near Federalsburg, Caroline County 30 



Fig. 1. — View showing pure stand of young Loblolly Pine 

 reforesting sandy loam upland of Talbot Formation, near 

 Wagram, Worcester County 46 



Fig. 2. — View showing flood plain along Marshyhope Creek 

 with Loblolly Pine, Red Maple, Sour Gum, Sweet Gum, 

 Green Ash and Magnolia, near Federalsburg, Caroline 

 County 46 



Fig. 1. — View showing flood-plain forest along the upper 

 waters of the Wicomico River, 4 miles north of Salisbury, 

 Wicomico County 54 



Fig. 2. — View showing river swamp with a nearly pure stand 

 of second growth Bald Cypress, Battle Creek, Calvert 

 County 54 



Fig. 1. — View showing transition from marsh to river swamp 

 on the Potomac River just above Rehobeth, Somerset 

 County 70 



Fig. 2. — View showing niarginal zone of marsh vegetation 

 along outer edge of river swamp with Rose Mallow, Wax 

 myrtle, Magnolia, and Sagittaria, Pocomoke River, 2 miles 

 below Pocomoke City, Worcester County 70 



Fig. 1. — View showing stream swamp along the Little Black- 

 water River, 4 miles south of Cambridge, Dorchester 

 County 78 



Fig. 2. — View showing fresh marsh lying behind brackish 

 marsh and merging into sandy loam upland forest, near 

 Greenbackville, Worcester County 7S 



Fig. 1. — View showing flood-plain forest on the Wicomico 

 Formation, Herring Run, Caroline County 102 



Fig. 2. — View showing stream swamp with Red Maple, Sweet 

 Gum, Viburuntu, Peltandra, and Riccia, Little Blackwater 

 River, Dorchester County 102 



Fig. 1. — View showing sand spit with dune and strand vegeta- 

 tion mouth of Fairlee Creek, Kent County 110 



