Botanical Notices from Spain, 187 



Since nothing has been hitherto observed of the development 

 of starch and chlorophylle, it is sufficient here merely to state the 

 fact as authentic in the cells of one plant. I intend at a future 

 period to publish some other facts on the development of these 

 two elementary structures and their mutual relation, and wish 

 that other microscopical inquirers would direct their attention to 

 this point, for it is indeed only occasionally that one meets with 

 useful facts. 



The origination of caoutchouc appears first to take place where 

 the amylum and chlorophylle formation is completed. It is there 

 that I first find the little granules in the cell-contents with cer- 

 tainty, and from there first it visibly coagulates in water. 



XXIX. — Botanical Notices from Spain. 



By MORITZ WiLLKOMM*. 



[Continued from p. 120.] 



No. X. Malaga, May 30th, 1845. 



After spending several days in the little town of San Roque, situ- 

 ated two leagues distant from Gibraltar, I proceeded along the coast 

 towards Malaga, where I arrived on the 19th of April. The vege- 

 tation of the hilly country of San Roque is, in its principal features, 

 perfectly similar to that of Algeciras. All the hills are thickly co- 

 vered with Calycotome villosa, Lk., here and there alternating with 

 large patches of Lavandula Stoschas, L. The high plains on the north 

 and west of the town, which separate this hilly district from the val- 

 ley of the Rio Guadarranque, are mostly covered with Quercus hu- 

 milis, Lam., which is here very common, but appears seldom to 

 flower ; at least I have hardly obtained ten specimens in flower. On 

 these high plains Cistinece occur in abundance, especially Cistus oris- 

 pus, L., C. alhidus, L., Helianthemum salicifolium, P., H. guttatmn. P., 

 and others; further, Ornithopus compressus, L., Ranunculus flabellatus, 

 Desf., Uropetalum serotinum, K., several Orchidece, Erodice, &c. The 

 most important botanical localities in the environs of S. Roque are — 

 the oak-woods stretching out in a north and w^est direction and 

 watered by the Guadarranque, the sandstone hills rising on the other 

 side of that river, a branch of the Sierra de Gazales and Monte Al- 

 moraima, a sandstone mountain lying between the bay and the sea. 

 In the rocky clefts of this mountain occur the pretty Anthericum bi- 

 color, Desf., not unfrequent, besides numerous Cistineee : as C. alhi- 

 dus, crispus , populifolius — upon the roots of which I observed hereCy- 

 tinus hypocistis, — Helianth. halimifolium, and especially H. Tuberaria, 

 P. ; besides Anemone palmata, L., Ranunculus flabellatus. Passer ina 

 villosa, Tulipa Celsiana, and on moist localities on the broad coomb 



* Translated from the Botanische Zeitung, Nov. 14, 1845. 



