MARYLAND WEATHER, SERVICE 433 



Anychia dichotoma Miclix. Forked Cliickweed. 



Throughout the state; in moist and dry forests; common. 

 Wicomico County, Tonytank Creek (1195). 



Anychia canadensis (L.) B. S. P. 



Baltimore, Druid Hill Park (W. Ralph Jones^. 



NYMPHAEACEAE 



Brasenia purpurea (Miclix.) Casp. Water-shield. 



Throughout the state; in ponds and slow streams; infrequent. 



Nymphaea advena Soland. Yellow Pond Lily. 



Throughout the state; in ponds and slow streams, being particularly 

 characteristic of the margins of marshes on the upper waters of tidal 

 rivers in the Coastal Zone. 



Castalia odorata (Dryand.) Woodv. & Wood. White Water Lily. 



Coastal and Midland Zones; in ponds and slow streams; frequent. 



CERATOPHYLLACEAE. 



Ceratophyilum demersum L. Hornwort. 



Coastal Zone; in slow streams and the upper waters of tidal rivers 



frequent. 

 Dorchester County, Little Blackwater River (1596). 



MAGNOLIACEAE. 



Magnolia tripetala L. Umbrella Tree. 



Known only from the Midland Zone, where it grows singly or in small 

 groups on flood plains or on rich mountain slopes; rare. 



Magnolia virginiana L. Laurel Magnolia. 



Confined to the Coastal Zone; in river swamps, stream swamps and 

 upland swamps, being more abundant in wet sandy soil and found also 

 in wet clay; common. 



Magnolia acuminata L. Cucumber-tree. 



Occurs rarely in the Coastal Zone, is occasional in the lower Midland 

 District and frequent in the upper Midland District and Mountain Zone, 

 preferring deep soils of lower mountain slopes. 



Liriodendron tulipifera L. Tulip-tree. 



Common in the Coastal Zone, where it is infrequent in the river swamps, 

 frequent in flood plains and infrequent in moist upland forests; com- 

 mon in the Midland Zone in the flood plains and swamps, rare in the 

 Mountain Zone. 



