202 ILLUSTRATIONS OF THE BOTANY OF [ Rosacee. 
with the exception of the secretion of prussic acid by the Amygdale@, also in pro- 
perties. 
The Chrysobalanee, most entitled to rank as an order from differences in structure, 
differ also from the true Rosacee in geographical distribution (Br. Congo, p. 434), as 
they are chiefly found in the tropical parts of Africa and America ; and though the order 
was not supposed to exist in Asia, Dr. Wallich has discovered species of Parinarium at 
Singapore, and an arborescent plant of this tribe, Cat. n. 7507,in Silhet. But a Chryso- 
balaneous plant is found much further north, as we have seen to be the case with plants 
of other tropical families. This is Prinsepia utilis of the present work, which is com- 
mon on the driest and most barren-looking schistose rocks, as in the neighbourhood 
of Muttiana, in N. lat. 314°, and at elevations of 5,000 and 6,000 feet, where its 
seeds yield by expression a useful oil. 
The Rosacee are, however, chiefly confined to the cool parts of the northern hemi- 
sphere, being found in the plains of high latitudes, and in the mountains of more southern 
regions. Though roses, peaches, and some of the apple-tribe, are found in the gardens, 
we do not meet with any of the Rosacee in the plains of India, with the exception of 
Rubus, found however only in hilly places in the southern parts of India, and a single 
Potentilla. This is P. denticulosa, DC. which does not differ from P. supina, Linn.; it is 
common in the plains of N. India in the cold weather, and at elevations of 4,000 and 
5,000 feet in the Himalayas. Messrs.Wight and Arnott mention, that it is found on the 
Neelgherries. I have also had it from Cheeni and from Lower Kunawur, whence it 
extends to the Caspian Steppes, and into Europe and also North America. | 
Two other species of Potentilla are found on the Neelgherries, with a Cotoneaster, 
Fragaria, and species of Rubus and Photinia. Of this last genus, species are also 
found in the mountains above Silhet and Pundua, and extending further north, with a 
species of Eviobotrya, in Nepal; making these genera common to the Himalayas and 
to China. A Raphiolepis is also mentioned in India, but it does not appear to extend. 
beyond China or Cochin-china. A species of Eriobotrya is said to be found in Persia. 
In addition to these, in the northern as in the southern parts of the Himalayas, there 
are numerous species of Rosacee belonging to such genera as are found in Europe, 
Siberia, the Altai Mountains, China, Japan, and North America; and from Caucasus 
to the Hindoo Khoosh, on the ramifications of which and in the valleys they include, 
some, as the Pomacee and Amygdalee appear to have their favourite resort. The genera, 
of which species are found in the Himalayas, are Amygdalus, Persica, Armeniaca, 
Prunus, Cerasus, Spirea, Neillia, Geum, Sieversia, Rubus, Dalibarda, Fragaria, Poten- 
tilla, Sibbaldia, Agrimonia, Sanguisorba, Rosa, Crategus, Cotoneaster, Cydonia, and of 
Pyrus, species of the sections Pyrophorum, Malus, and Sorbus. Of these, Neillia is 
alone peculiar to these mountains. Sieversia is interesting, as found on the Alps, in 
Kamtschatka, in Melville Island, and in the Himalayas, on such lofty mountains as 
-Choor, Kedarkanta, and Gossainthan; and Dailibarda, in these mountains in North 
America, and the Straits of Magalhaens. Though the Rosacee are chiefly confined to 
the 
