SELECT PLANTS. 
53 
Pinus Haleppensis, Mill. 
Although ascending mountains in South Europe to the height of 
4000 feet, it thrives best in loose coast-sands, where in ten years 
it will attain to 25 feet, and finally will become a larger tree than 
on firm lands. We find the Haleppo-fir one of our best avenue 
trees, as here first proved by the writer. 
Pinus Strobus, Linne. 
Particularly adapted for deep rich soil in mountain-valleys ; known 
to reach a height of 270 feet, with a stem of 8 feet diameter. The 
wood is much sought among other purposes for flooring, oars, &c. 
Platanus occidentalis, Linne. 
Its wood is not readily attacked by insects. It has been success- 
fully planted in morassy places, to cope with miasmatic effluvia. 
Platanus orientalis, Linne. 
It resists, in large towns such as London, the smoke better than 
any other tree, growing even under such disadvantage vigorously. 
Platanus recemosa, Nutt. 
A good promenade-tree, which, according to Professor Bolander, 
grows more rapidly and more compact than P. occidentalis. 
Poa aquatica, Linne. 
It produces a large bulk of foliage, and may be disseminated in 
swamps for fodder purposes. 
Poa nemoralis, Linne. 
According to Lawson no better grass exists for displacing weeds 
on pleasure-lawns ; the same may be said of Poa comjpressa, L. 
Pupulus monilifera, Aiton. 
It is recommended to obtain for planting along streets or near 
dwellings only cuttings from male trees, as the minute downy 
seeds of the female trees are copiously wafted through the air, and 
have irritant effects on the respiratory organs. 
Priva laevis, Jussieu. 
Chili and the Argentine Republic. A perennial herb, the small 
tubers of which can be used for food (Philippi). 
Quillaja saponaria, Molina. 
Chili. A colossal tree. The bark is rich in Saponin, and thus 
valuable for dressing wool and silk, 
