﻿1903] 



MACCHIE OF NEAPOLITAN COAST REGION 



359 



The soil in both D and E was a rich loam, formed of decom- 

 posed tufa, deeper in the former locality than in the latter. 

 The plant-society of Z> is a rather exceptional one, as the Colu- 

 tea (here sometimes 2.5"^ high) is a rare or local shrub. Large 



Fig. 3,— Interior of Solfatara near Pozzuoli, with macchia of Myrtus, Erica and 

 Calycotome on north wall of crater. 



areas on Monte Gauro are, however, occupied by it, together 

 with a few other species. Near the locality D but in scantier 

 soil and more fully exposed to the sun were formations almost 

 wholly composed respectively of Pistacia Lentisciis and of Caly- 

 cotome villosa. At a lower level, in rich deep soil, was a consid- 



