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 WitLkomM*. 
[Continued from p. 120.] 
No. X. Matraea, May 30th, 1845, 
Arter 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 Stechas, 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 Cistinee occur in abundance, especially Cistus cris- 
pus, L., C. albidus, L., Helianthemum salicifolium, P., H. guttatum, P., 
and others; further, Ornithopus compressus, L., Ranunculus flabellatus, 
Desf., Uropetalum serotinum, K., several Orchidee, EHrodie, &c. The 
most important botanical localities in the environs of S. Roque are— 
the oak-woods stretching out in a north and west 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- 
mordima, 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 Cistinee: as C. albi- 
dus, crispus, populifolius—upon the roots of which I observed here Cy- 
tinus hypocistis,—Helianth. halimifolium, and especially H. Tuberaria, 
P.; besides Anemone palmata, L., Ranunculus flabellatus, Passerina 
villosa, Tulipa Celsiana, and on moist localities on the broad coomb 
_* Translated from the Botanische Zeitung, Nov. 14, 1845. 
