FOR VICTORIAN INDUSTRIAL CULTURE. 



179 



native P. undulatum is rather adapted for copses, and deserves 

 cultivation also for the sake of its fragrant flowers, from which 

 an essential oil can be distilled. 



Planera aquatica, Gmelin. 



North America. An elm-like tree, which can be chosen for 

 plantations in wet localities. The wood is hard and strong. 



Platanus occidentalis, Linn^. 



The true Plane-tree of the east part of North America. More 

 eligible as an avenue-tree than as a timber- tree; diameter of 

 stem at times fourteen feet; wood dull red, not readily 

 attacked by insects. It has been successfully planted in 

 morassy places, to cope with miasmatic effluvia. 



Platanus orientalis, Linn6. 



The Plane-tree of South Europe and Middle Asia. One of 

 the grandest trees for lining roads and for street-planting, 

 deciduous like the other Planes, rather quick of growth, and 

 not requiring much water; attains a height of ninety feet. 

 It resists, in large towns such as London, the smoke better 

 than any other tree, growing even under such disadvantage 

 vigorously. The wood is well adapted for furniture and 

 other kinds of cabinet-work. 



Platanus racemosa, Nuttall. 



The Californian Plane-tree. A good promenade-tree, which, 

 according to Professor Bolander, grows more rapidly and 

 more compact than P. occidentalis. Wood harder and thus 

 more durable than that of P. occidentalis, also less liable to 

 warp. 



Plectocomia Himalaiana, Griffith. 



Sikkim, up to 7000 feet. This Pattan-Palm requires moist 

 forest-land. Its canes are not durable, but this palm is an 

 object worthy of scenic horticulture and would prove the 

 hardiest among its congeners. 



Plectronia ventosa, Linne. 



South Africa. A hedge-bush, like P. ciliata (Sonder) and 

 P. spinosa (Klotzsch). 



Poa Abyssinica, Jacquin. 



The Teff of Abyssinia. An annual grass. The grain there 

 extensively drawn into use for bread of an agreeable acidu- 

 lous taste. 



Poa airoides, Koeler. {Gatabrosa aquatica^ Beauvois.) 



Europe, North Africa, North and Middle Asia, North 

 America. The Water Whorl-grass. A creeping grass, suit- 

 able for soil subject to inundation. 



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