XIV A FLORA OF GIBRALTAR AND THE NEIGHBOURHOOD 



part of his book. In some cases, also, localities are incorrectly 

 cited, but usually this is due to the comprehensive nature of 

 those on collectors' labels referred to above. There are many 

 omissions of localities recorded by Kelaart for the Eock ; though 

 he cites the page in Kelaart's Flora in which the records occur. 

 On the other hand, he credits that author with many localities not 

 mentioned in his work, apparently assuming that Dautez's and 

 Kelaart's stations were identical. Many of my records for 

 District I. have been due to acceptance of Debeaux's citations 

 which further research has proved to be false, necessitating many 

 corrections in my Appendix. Reverchon's finds are often only 

 mentioned in observations interspersed in the text, and it is not 

 clear why these and others are not included in the numbered 

 series. Debeaux enumerates 965 species, and an additional 72 

 in his observations, making 1037 for the whole region, of which 

 only 367 accepted species are mentioned for the Rock, 29 less 

 than Kelaart enumerates, after making similar deductions for 

 exclusions, &c. 



In 1910, Mr. B. H. T. Frere published his Guide to the Flora 

 of Gibraltar, which is almost entirely a compilation of previously 

 published records, with the descriptions of all non-British species 

 added. Unfortunately the author had overlooked the publication 

 of Perez Lara's Florida, so a large number of available records 

 are omitted, and the few that are added are mostly for species 

 which occur far beyond our limits. The descriptions are not 

 very clearly drawn up, since in attempting to make the work 

 popular the author has made a compromise between technical and 

 popular language, acceptable neither to botanists nor to those 

 with no botanical knowledge. The omission of the descriptions 

 of British species necessitates constant reference to other works 

 which are not always readily olitainable on the spot. There is 

 no attempt to emphasize the differences between allied species, 

 and scarcely any varieties are given. The stations are very 

 vaguely cited, no personal verifications are given, and there are 

 no authorities for the nomenclature. As the work contains very 

 little that is new, and omits Juncacece and all later orders, I have 

 not attempted to tabulate the species recorded. 



The Botanical Districts. 



I have divided the region into three main districts : — I. Gib- 

 raltar, i. c. the Rock and the North Front as far as the British 

 Lines. II. The Neutral Ground, kept as a distinct district for 

 reasons explained below. III. Spain, which I have subdivided 

 into — i. the San Roque subdistrict, from the Mediterranean to 

 the Guadarranque River, as far north as the limits of the region ; 

 ii. the Algeciras subdistrict, or all that portion of the region lying 

 south of the Palmones River ; and iii. the Palmones subdistrict, 

 between the rivers. 



District I., Gibraltar, is of special interest, being wholly 

 British territory. It consists of the Rock proper, with that part 

 of the isthmus joining it to the mainland called the North Front. 



