XVlll A FLORA OF GIBRALTAR AND THE NEIGHBOURHOOD 



Cork Wood and Alcadeza Crags being parts where new records 

 can readily be made. It contains about 1020 native species, of 

 which over 140 do not occur for certain elsewhere in our region. 

 The list is too long to detail, but the following, in addition to 

 several varieties, do not occur elsewhere in the province, those in 

 roman type not being recorded from Spain, while those marked ? 

 may occur elsewhere in our region : — Kanunculus tripartitus, 

 B. scelercUus, Anemone coronaria v. micrantha (endemic). Nastur- 

 tium Mspanicuvi, Brassica fruticulosa V Helianthemum glaucum, 

 Dianthus lusitanicus, Silene mellifera, S. italica, S. commutata, 

 Linum decumbens, Hypericumcrisiyuvi, Genista Winkleri (endemic), 

 Ci.Hcenseleri, Ononis brevifiora, 0. Natrix,Hippocrepisunisiliquosa, 

 Vicia cassuhica, V. tenuifolia, Spiraa ftabellata, Seclum amplexi- 

 caule, Valerianclla carinata, Cephalaria sijriaca, Eupatoriuni 

 cannabinum, Prolongoa pectinata (confined to Cadiz province), 

 Filago apiculata ? Carlina lanata, Carduus nigrescens ? Centaurea 

 alba, C. uliginosa, C. Seridis? Jasione rosularis (endemic), Canipa- 

 nula dichotonia, Erythrcea Barrclieri, Convolvulus undulatus, 

 Orobanche mauretanica ? 0. variegata, 0. Hedene, Anagallis 

 platyphylla, Euphorbia gibraltarica (endemic), Pinus halepensis, 

 Zannichellia macrostenion, Potaviogeton americanus, P. p)usillns, 

 Asphodelus serotinus (endemic), Carex paniculata, C. punctata, 

 Tragus raceviosus, Aira viulticulmis, Glyceria loliacea, Lepturus 

 incurvatus, Iscetes batica (endemic), Polystichum Thelypteris. 



District III. Subdistrict ii. Algeciras. — This subdistrict, of 

 twelve and a half square miles, is the only one, except that of 

 Gibraltar, which contains mountains of over 1000 ft. high. The 

 range behind Algeciras is usually called the Sierra de Palma or 

 the S. de Luna, but I have been unable to verify that these names 

 are used locally, nor to which portions of the range they apply. 

 Debeaux usually, though not invariably, writes of the S. de Luna 

 as in the Los Barrios district, but they certainly lie south of the 

 Palmones River, and are perhaps the northern end of the range. 

 I have called the whole range, of which I have personally only 

 worked the portion nearest to Algeciras, the " Mountains behind 

 Algeciras," or simply " Mountains." They are mostly covered 

 with cork and oak trees, with shrubs of the Cistacece, Legummi- 

 ferce, and Ericacece, the undergrowth being ericetal. The valleys 

 are well-watered, and produce many moisture-loving plants, but 

 as the elevation increases the vegetation becomes more xero- 

 philous, and nothing of an alpine or subalpine nature is found, 

 unless Corbularia Bulbocodiuni be so classified. The lower hills 

 about Algeciras and the higher ones towards Carnero Point have 

 a somewhat similar flora to that of hills of the same nature 

 about San Roque, but at Carnero Point species found elsewhere 

 only on the Rock reappear, e. g. ISiloic obtusifolia and Asteriscus 

 maritinms. There are sandhills at Sandy Bay, south of Algeciras, 

 and from about a mile north of the town up to the Palmones 

 River there are extensive sands, much of which is cultivated for 

 vegetables. The river is tidal and its muddy shores support a 

 few halophilous plants. 



