BOTANICAL SX^RVEY— SUGAE GROVE REGION 



279 



Together with these are iiunierovis individuals from the lichen zone 

 on one side and the forest on the other. 



This /one is in reality nieicly an extension of tin* nndcrhi-nsli of the 



Fig. 18. Fi-uitini;- (.).\y(li'nili-\iiii in tin- Oiik Kcin-st. At tlu' Left Castiiiiii dpiitata. At the 

 IJiglit Acer ruljruin. In tlie Background Quercus sp. 



pine forest behind it on to thinner soil than can support tree growth. 



The Pine Forest. The zonal series is completed by the pine forest, 



which occupies the poorest soil capable of supporting arliorescent plants. 



