CONCENTRATION OF TISSUE FLUIDS OF EPIPHYTES 



501 



Habitat 



Average Con 

 centration, P 



Rocky slopes I 5-94 



Canyons 13-33 



Arroyos 12-99 



Bajada slopes 20.53 



Salt spots 23.57 



All habitats 15-15 



These values are (roughly speaking) from 4 to 7 times as large as 

 those for the epiphytic families. 



For the Jamaican series, and unfortunately only for the Jamaican 

 series, it is possible at this time to compare the averages for epiphytic 

 and terrestrial forms from the same habitat. 



Table 4 gives the averages of the species means for each habitat 

 for the Orchidaceae and Bromeliaceae and for the genus Peperomia of 



TABLE 4 



Comparison of Osmotic Concentration of Epiphytic Plants with that of Terrestrial 

 Herbaceous Plants in the Montane Rain Forest 



