A GUIDE AND KEY TO AQUATIC PLANTS 121 



EUPHORBIACEAE Spurge famUy 



1. Stillingia Garden 



S. aquatica Chapm. — Low, short-lived shrub with extremely light 

 corky wood. Found infrequently in acid ponds and marshes, Coastal 

 Plain, Florida to South Carolina and Mississippi. 



CALLITRICHACEAE Water Starwort family 



1. Callitriche L. 



1. Fruit longer than broad, lobes keeled 1. C. palustris. 



1. Fruit as broad as long, lobes rounded on edges 2. C. heterophylla. 



1. C. palustris L. Water Starwort — In ponds over all of our terri- 

 tory. 



2. C. heterophylla Pursh. Water Starwort — Should also range over 

 all of our territory. 



CYRILLACEAE Titi family 

 1. Cyrilla Garden 



1. Leaves mostly over 5 cm. long; petals 3 mm. long or 1. C racemiflora. 



more. 

 1. Leaves mostly less than 4 cm. long; petals less than 2. C. parvifolia. 



3 mm. long. 



1. C. racemiflora L. Titi — Acid swamps over all of our Coastal 

 Plain territory. 



2. C. parvifolia Raf. Titi — Small-leafed species, found from North 

 Florida westward along the Gulf to beyond our limit. 



2. Cliftonia Gaertn. 



C. monophylla (Lam.) Sarg. Titi — Non-alluvial acid swamps in 

 the Coastal Plain, North Florida to Georgia and westward to beyond 

 the limit of our range. 



AQUIFOLIACEAE Holly family 



1. Ilex L. 



1. Berry black 1. I. coriacea. 



1. Berry red 2. 



2. Leaf-blades linear, 1-4 cm. long 2. /. myrtifolia. 



2. Leaf -blades elliptic, 4-10 cm. long 3. I. cassine. 



1. I. coriacea (Pursh) Chapm. — Acid non-alluvial swamps, Coastal 

 Plain, Florida north and west to beyond the limits of our territory. 



2. /. myrtifolia Walt. — Acid swamps and acid Cypress ponds, 

 Coastal Plain, Florida to North Carolina and to the westward beyond 

 the limit of our territory. 



3. /. cassine L. Yaupon — Swamps, usually acid. Coastal Plain, 

 Florida north and west to beyond the limits of our region. 



