Philadelphee.)] THE HIMALAYAN MOUNTAINS. 215 
have not been found in other quarters of the world, but the two first are common to 
Asia, Africa, and America. Of most, the greater proportion of the species are confined 
to the southern parts of India; but as a few species escape to the northward of the 
tropics, both in America and China, so in India, from the powerful influence of a local 
climate, several species, with Melastoma malabathricum, are found at the foot of the 
Himalayas in Silhet, and in diminished numbers in Nepal. Of these may be mentioned, 
Melastoma Wallichii, Osbeckia ternifolia and Nepalensis, Oxyspora paniculata, Sarco- 
pyramis Nepalensis, and Sonerila maculata. Some species extend still further north, as 
Osbeckia stellata and angustifolia, in the valleys near Mussooree, and on the banks of the 
Giree. Sonerila tenera, discovered by Dr.Wallich in Tavoy, was found by myself in 
the Deyra Doon. Though so frequently mentioned, it cannot be too often repeated, 
that it is only during the rainy season that these tropical plants make their appearance : 
and the figure in Tab. 45 is an instance of their diminished size, when found in these 
northern situations. ) 
Sonerila tenera ; pilosula ubique setis longis intermixtis; caule exiguo tenero, foliis submembra- 
naceis oblongis ellipticis obtusis trinerviis ciliatis, racemis terminalibus lateralibusque-—Tab. 45. f. 2. 
(a.) Flower ;—(b.) the same, with petals and stamens separated ;—(c.) capsule ;—(d.) cut transversely ; 
(e-) longitudinally, showing the seeds attached to the axis, “ exactly as in Osbeckia chinensis. Gert. 
-Carp. 2. t. 106 ;” as Dr, Roxburgh remarks, in describing his Sonerila maculata. F1. Ind. ed. Wall. 1. 
p- 121. 6G 
74. ALANGIES. 
This small order may almost be said to be confined to the East-Indies, as both its 
genera, Alangium and Marlea (Stylidium, Lour.) are common in the southern parts of 
India, whence they extend along the Malayan Peninsula to Cochin-china, and north- 
wards along the forest-clad base of the Himalaya. Marlea begonifolia extends beyond 
30° of N. latitude, while Alangium decapetalum spreads from the Central Range up the 
western bank of the Ganges to Allahabad, and the banks of the Jumna. This is com- 
mon in the Peninsula with A. hewapetalum, said to afford good wood. and edible fruit. 
75. PHILADELPHEZ. | . 
This order, nearly as small as the former, affects a very different locality, but serves 
to show the analogy in the vegetation of very distant countries. The genus Philadelphus 
was known only as existing in the South of Europe and North America, until Dr. 
Wallich discovered a new species in the Himalayas. This is formed of two varieties, 
which he at one time considered two distinct species, P. tomentosus, which is probably 
only a more advanced state of P. triflorus, having the appearance of the figure at 
T.46. This is common in Sirmore and Kemaon, at elevations of 6,000 and 7,000 feet, 
and P. tomentosus was procured by Dr.Wallich from Gossainthan. Deutzia is one of the 
new genera found by Thunberg in Japan, and which, on identifying in the Himalaya, 
first led me to perceive the affinity of its flora to that of that island; new species have 
been discovered by Bunge in the north of China in addition to the three enumerated 
by 
