188 Botanical Notices from Spain. 
extending from the Almordima towards the north, the Ranunculus 
hederaceus, L.., which is rare in Spain. In a fine copse lying east of 
the town I gathered Serapius Lingua, L., in great abundance ; much 
rarer occurs among it the splendid Serapius cordigera, L., some spe- 
cimens of which I also observed on the sandstone hills lying on the 
other side of the Guadarranque. I also met with Drosophyllum lu- 
sitanicum, Lk., a second time in company with the same Helianthe- 
mum with which I had before observed it in the mountains of Alge- 
ciras. ‘The oak-woods of S. Roque were chiefly composed of Qu. 
Suber; only along the river stretches a broad strip of Qu. lusitanica 
8. betica, mixed with Fravxinus excelsior. On the banks of the river 
grow Nerium Oleander, Tamarix africana, Euphorbia palustris, &c. in 
abundance, and the numerous ponds along the banks are filled with 
Nasturtium officinale, Iris Pseudacorus and a Callitriche. Further 
occur in these woods Ruscus aculeatus, L., Anemone palmata, L., 
Ranunculus trilobus, Desf., Ficaria ranunculoides, &c. I have in vain 
sought for Salvia betica, Boiss., which is said to occur in these 
woods ; probably it does not flower till summer. On clayey fallow 
land in the environs of S. Roque the Convolvulus tricolor, L., and 
C. undulatus, Cav., were already in blossom ; among the young corn 
the flowers of Gladiolus segetum, Gawl., and Papaver Rheas, L., were 
pre-eminently splendid, and the thick hedges of Péstacia Lentiscus 
and Coriaria myrtifolia, both now in flower, were thickly interlaced 
with flowering Smilax mauritanica and Bryonia dioica. In the hilly 
land between S. Roque and the peninsula of Gibraltar, where occur 
Anthyllis Vulneraria, L., var. rubriflora, Lupinus angustifolius, L., 
several Hedysara, Trivago apula, Col., Anchusa italica, L., Euphorbia 
retusa, Cav., Cerinthe major, L., &c. - abundance, more rarely Pi- 
cridium vulgare, Desf., there are numerous ponds and bogs in which 
I met with an Ginanthe, together with Alisma ranunculoides, L., Ca- 
rices and Heleocharis palustris. 
As I have already several times remarked, the entire hilly and 
mountainous district in the province of Cadiz, with the exception of 
the high limestone mountain of Guazalema extending along its north- 
eastern limits, consists of sandstone. This formation suddenly ceases 
after passing the Rio Guadiaro, a large river which springs in the 
neighbourhood of the town of Ronda, forms the boundary between the 
provinces of Cadiz and Malaga, and empties itself into the sea at the 
eastern base of the Almoraéima. On its left bank rise lofty limestone 
mountains, which belong to the wide-spreading Serrania de Ronda. 
This extensively branched and complicated mountainous district lies 
between the two rivers Guadiaro and Guadalhorce, which last sepa- 
rates it from the limestone mountains of Antequera and the hilly 
land of Malaga. The principal chain of the Serrania de Ronda is 
formed of the high mountains of Yunquera, composed of the older 
limestone and marble, whose highest summit, called Las Plazoletas, 
rises to a height of 8000 feet above the level of the Mediterranean. 
From this principal chain extends a series of craggy, abrupt lime- 
_stone mountains northwards from 5000 to 6000 feet high, called 
