﻿1903] MACCHIE OF NEAPOLITAN COAST REGION 357 



This plot {fig. 2) was examined November 12, at which time 

 the Arbutus and Inula were in blossom, the Myrtus and Clematis 

 in fruit, and the other shrubs neither in flower nor in fruit. In 

 numbers the Myrtus greatly exceeded all the other species com- 

 bined, and indeed was in places so matted that it would have 

 been impossible to count the individuals, without carefully 

 digging up the entire mass and separating it into its factors. 

 The number above given is therefore only an estimate. Most of 

 the specimens were less than 50^"" and many only 20-30^"" high. 

 The oaks were young growths from the stumps of saplings 

 recently cut to the ground, and were therefore in no case more 

 than 2™ high. The Calycotome appeared as a rapidly growing 

 spiny shrub of 2"" or less in height, many of the specimens being 

 seedlings of about a year old. The Spartium and the Inula 

 each reached a maximum height of about i-S""; the latter a 

 straggling undershrub, woody below, but with all the younger 

 portions of the stems still herbaceous. 



The Inula is not primarily a characteristic shrub of the 

 macchie, but rather of the cliffside societies, but about Pozznoli 

 it is a frequent companion of the shrubs in the list above given. 

 The soil of this locality was of volcanic origin, composed of 

 finely divided ejecta from the crater of the Solfatara, with some 

 of the feldspathic rocks decomposed by the action of sulfur 

 dioxid into a white earth which is rather characteristic of the 

 region. The mixture was porous and fairly warm, but by no 



means fertile. 



D. 



Monte Gauro, near Pozzuoli, east side of crater, west slope. Somewhat 

 less than 200"^ above sea-level. 



Co/ulea ardorescens L.. - - - - loi 



Spa rtium juncezan L , - - - 22 



E. 



Monte Gauro, east side of crater, east (outside) slope. About 200"" above 

 level. 



Quercus ptibescensV^Wld, - - - 3^ 



Spartium jtinceiim L. - - - 22 

 Crataegus Oxyacantha ^nonogyna Jacq. - 1 1 



Rtibtis discolor y^ , 8i.^. . ., . 8 



Co hi tea arbor escens L. - - - - 3 



CleiJiatis Flammula L. - - - 3 



Cisius salvifo litis L. - - - - 62 



