ON PLANTS PRODUCING DOUBLE FLOWERS. 197 
"with" the exception of Rubus! rosifolius, the geographical range of 
which was ill defined. This statement ‘requires some modification. 
‘The bulk of the plants producing double flowers is undoubtedly indi- 
genous to the northern hemisphere; in Polynesia and the whole of 
Australasia not a single species with double flowers has turned up ; but 
there are in South Africa and South America at least a few plants, the 
‘stamens of which are converted into petals. It is impossible to say 
whether the absence of double flowers from Polynesia and Australia 
is owing to the fact that there are no observers in those parts who at 
once seize and transplant them into a garden, or whether they really 
néver occur. In Europe double: flowers are not unfrequently found 
wild ; in wet seasons double Hamieuli are by no means uncommon, 
and Dr. Landerer, of Athens, has pointed out to me the abundance of 
double Poppies in Greece. Civilized man having taken a peculiar 
fancy to these products, they are safely lodged in garden and green- 
house, wherever they spring up, and hence all countries longest or 
most highly civilized have, as the case now stands, supplied the greatest 
number of double flowers, China and Japan boasting of the most per- 
fect of all, the Camellias. 
"The sticceeding list, from which the Composite and other spuriously 
double flowers, such as Viburnum and Hydrangea, have been excluded, 
‘has been some years in preparation, and bas been augmented by additions 
from various botanical friends. I intended to make it the basis of an 
exhaustive paper on the subject, but for some time’I shall be unable to 
carry out this intention. However, as no more complete list has as 
yet been drawn up, and as several friends wish to see it printed, I now 
-beg to submit it. "The whole number of plants with double flowers I 
have collected amounts to 279 species, —234 Exogens, and 45 Endo- 
gens. Amongst the former we have 166 Polypetale, 66 Monopetale, 
and, strange to add, 2 Apetale (Laurinee). As I intend to pursue the 
subject further, any addition to my list will be highly acceptable. 
M IC WO i Ranunculaceae. 
Clematis Viticella, Liu». Europ. austr: 
C. florida, Thunb. Japonia. 
~~. Fortunei, Moore. Japonia. 
— C. patens, Deme. Japonia: - 
. Anemone Japonica, Sieb. et Zuce. Japonia. 
VOL. 11. [JUNE 1, 1864.] N 
