2l6 FLORIDA GEOLOGICAL SURVEY I3TH ANNUAL REPORT 



Orange Lake with black waxy soil but no visible outcrops of lime- 

 stone might also be classed here. The trees in such places are 

 mostly deciduous, and some of them are listed under the illustration. 

 Ferns of various kinds abound on the shaded rocks, and a few 

 herbs of the nettle family, such as Urfica chaniaedryoides and 

 Parietaria, are quite characteristic. 



The soil of the calcareous high hammocks is very good for 

 farming, but some of it is too rocky, and the expense of clearing 

 is quite an item, too. In fields and orange groves cleared from 

 this type (and also from low hammocks) scattered cabbage pal- 

 metto trees are a common and picturesque sight (fig. 14). They 

 probably come up from seeds dropped by birds, and are allowed 

 to remain for the sake of appearances and because they cast little 

 shade and do not take much from the soil. 



The tropical hammocks described on an earlier page might also 

 be treated as calcareous hammocks, but they have been put in a 

 different category on account of the small size of the trees. 



Szveet gum woods. This is not a very distinct type, but is note- 

 worthy on account of its strong resemblance to some forests several 



Fig. 41. Red oak woods with some sweet gum, on reddish strongly phos- 

 .phatic soil about a mile and a half east-southeast of Ocala, Marion County. 

 Feb. 13, 1915. 



