﻿f. 



■T 



360 BOTANICAL GAZETTE [may 



erable tract covered with Casta?iea sativa Mill, (young saplings), 

 and a shrub that appeared to be Cytisus scoparius Link. 



The society E presented the aspect of a very open thicket, 

 with the oaks predominating over all the other species, as 

 many of them were about 3.5 "" high. The Crataegus is not a 

 common ingredient of the macchie about Pozzuoli, but frequently 

 is encountered singly on the edges of banks, overhanging roads 

 or cliffs. Ctstus salvifoliiis when found growing among or under 

 trees or tall shrubs, as in the societies j5 and E does not reach 

 anything like its normal development, as, according to Beck [op, 

 cit., p. 126), it cannot bloom without receiving at least 0.23 of 

 the total light intensity of the regions where it grows. 



The areas D and E were measured and counted on December 

 20, and it is an interesting illustration of the indefiniteness of 

 the seasons, and the imperfectly tropophytic character of the 

 vegetation about Naples that the Colutea in many cases bore at 

 the same time dry ripened pods, new leaves, old leaves, and a 



few flowers, although 



May 



June. So too the Crataegus, which regularly blossoms in April 

 and May, showed on December 20, in a few instances, new 

 leaves, old leaves, blossoms, and ripe fruit on the same branches, 

 This in spite of the fact that the winter of 1902 has been a cold 

 one for the region, though without frost up to the date above 

 mentioned. 



In summing up the enumerations, it may be said that B and 

 Care the most typical Neapolitan macchie, but the others are 

 good examples of the way in which the grouping of species 

 varies with soil, exposure, and other circumstances. 



Side by side with the flora of the Neapolitan macchie there 

 grows another [Jig. 4), consisting, like the former, largely of 

 woody plants, but for the most part distinct from it. I refer to 

 the larger plants that partially clothe most of the cliff sides and 

 many of the older tufa walls. The principal species are: 



1. Artemisia arborescens L. 8. Spartiuni jtmceiim L. 



2. Artemisia variabilis Ten, q. Medicago arborea L. 



3. Helichrysu7n rupestre DC. 10. Opuntia Ficus-indica Mill. 



4. Helic hry sum Htoreum Gmss. ii. Matthioia rupestris I^g^c. 



5. Achillea ligustica All. 12. M. incana Dec. 



6. Inula viscosa A\\. 13. Satureia graecal^. 



7. Centranthus ruber Titc. 14. Euphorbia dendroides I.. 



K 



