ALTAMAHA GRIT REGION OF GEORGIA 



81 



minosae. Compositae is the largest family, with Cyperaceae and 

 Gramineae a tie for second place. Cryptogams are rare or 

 absent, and monocotyledons constitute about 37% of the 

 whole list. 



1— ,an. Feb. Mar. April May June July Aug. Sept. Oct. Nov. Dec. 



20 

 10 



1 ] ; ! /i\ ' « ■ ' , 

 j. — 1 1 — j _ /_,. -\J- --'/\ - -! 1 *• — 



I , I I / 1 ' "V^/ \ ' 1 



1 1 ' .-' / 1 ' ' \ ' ' I 



' 1 ' /"• I ' ' \ ' ' 1 



l _ — t -/-t . 1 i--tr---< r 



20 

 10 



Fig. 11. 



Phsenological diagram for 52 plants of shallow pine-harren ponds. 



The ranges of these species are slightly different from those of 

 the cypress ponds. Nearly all of them occur in the Lower Oligocene 

 region, but not quite so many are known in the flat pine-barren 

 country. Nearly all have also been reported from Florida, but 

 quite a number only from the northwestern part of that state. 



11. Ponds along the Altamaha Grit Escarpment. 



Just at the inland edge of our territory, perhaps occupying 

 holes in the thin edge of the Altamaha Grit, are a number of small 

 but apparently permanent pine-barren ponds. These are too 

 few and scattered to contain a very rich flora. The following 

 species have been observed in such places in Screven, Wilcox, 

 and Decatur Counties. 



(For explanation of asterisks see summary.) 



3 Taxodium imbricarium 



2-3 



— 



2 Pinus Elliottii 



2 



— 



1 Nyssa biflora 







2 Hypericum fasciculatum 



4-8 



yellow- 



2 Cephalanthus occidentalis 



6-9 



white 



1 Nyssa Ogeche 



4-5 



— 



1 Pieris nitida 



3-4 



white 



1 Magnolia glauca 



4-7 



white 



*3 Myriophyllum heterophylluml/- 







*2 Brasenia purpurea1| 



5-6 



purple 



2 Pontederia cordatalf 



4-8 



blue 



2 Iris versicolor 1| 



4-5 



blue 



*2 Utricularia inflatal/- 



3-7 



yellow 



