288 Select Plants for Industrial Culture 



Pircunia dioica, Moquin. 



Southern Brazil and La Plata- States. The Ombu. A deciduous 

 tree, for shady avenues grown in South-Europe, as well as in many 

 tropical countries; shown by the writer of this work to be hardy in 

 the lowlands of Victoria. It attains a height of about 60 feet and is 

 comparatively quick of growth. 



Piscidia erythrina, Linn<$. 



West-Indies. Florida " Jamaica-Dogwood." A tree, reaching a 

 height of about 30 feet. The bark has come into medicinal use, 

 particularly as an hypnotic. 



Pisonia aculeata, Linne". 



Tropical and sub-tropical countries of both hemispheres, extending 

 as a native plant into New South Wales. This rambling prickly bush 

 can be chosen for hedge-copses. 



Pistacia Lentiscus, Linne". 



The Mastic- Tree. Mediterranean regions. A tall evergreen bush, 

 exuding the mastic-resin, mostly through incisions into its bark. In 

 Morocco the plant is extensively used for hedges also. The deciduous 

 P. Atlantica, Desf., yields likewise mastic. 



Pistacia Terebinthus, Linne. 



Countries around the Mediterranean Sea. A tall bush or small 

 tree with deciduous foliage. The fragrant Cyprian or Chio-turpeutine 

 exudes from the stem of this species. 



Pistacia vera, Linne. 



Syria and Persia. A deciduous tree, sometimes to 30 feet high, 

 yielding the Pistacio-nuts of commerce, remarkable for their green 

 almond-like kernels. The galls from this tree are of technic value. 



Pisum sativum, Linne".* 



The Common Pea. South- Western Asia. Matures seeds as far 

 north as 70 22' in Norway (Schuebeler). Cultivated even by the 

 ancient Greeks and Trojans (Virchow, Wittmack). This annual of 

 daily use could hardly be left unnoticed on this occasion. Suffice it 

 to say, that the herbage as a nutritious fodder deserves more attention 

 than it receives. The green fruit contains inosit-sugar and cholestrin 

 fat. For field-culture a sandy-calcareous loam should be chosen for 

 this plant, to ensure rich and safe harvests. Peas retained their 

 vitality afer four years' exposure to the extreme frosts of Polaris- 

 Bay. A second species, P. Aucheri (Jaubert and Spach), which ia 

 perennial, occurs in alpine elevations on the Taurus. 



Pittosporum tenuifolium, Banks and Solander. 



New Zealand. This with P eugenioides has proved very suitable 

 for tall garden-hedges, for which these and several other species 

 were first brought into notice by the writer. Unhurt by a cold of 9 F. 

 (Gorlie). 



