in Extra-Tropical Countries. 289- 



Pittosporum undulatum, Ventenat. 



South-Eastern Australia. This tree with P. bicolor (Hooker) 

 produces a wood well adapted for turners' purposes and also to some 

 extent a substitute for boxwood. The flowers furnish a highly 

 fragrant volatile oil on distillation. Under very favorable circum- 

 stances attaining a height of 80 feet (De la Motte). 



Planera aquatica, Gmelin. 



South-Eastern States of North-America. An elm-like tree, which 

 can be chosen for plantations in wet localities. The wood is hard 

 and strong. 



Plantago lanceolata, Linn4. 



Europe, Western Asia, Northern Africa. The Rib-herb or Plain- 

 tain-herb. This perennial weed disseminates itself readily, and is 

 recommended by some ruralists, though neither by Langethal nor 

 Morton, as valuable on very poor pasture land; the allied P. media 

 (L.) is of similar use and so perhaps P. major (Camerarius), all of 

 equal geographic range; the seeds are much liked by cage-birds. 



Plantago Psyllium, Linn. 



Countries around the Mediterranean Sea, extending to Austria and 

 Persia. An annual herb. The seeds render water very mucilaginous, 

 and come thus into requisition for the preparation of silk-ware, for 

 imparting gloss to colored paper, and for cotton-printing, irrespective 

 of some medicinal utility (Wiesner). The same may be said of P. 

 arenaria (Waldstein and Kitaibel). Both species could be easily 

 naturalized on sandy coast-land. 



Platanus occidentalis, Catisbye.* 



The true Plane-Tree of Eastern North- America; also known as 

 Buttonwood. More eligible as an avenue-tree than as a timber-tree. 

 Height reaching about 100 feet; diameter of stem at times to 14 feet. 

 Wood dull-red, light, not readily attacked by insects: used in the 

 manufacture of pianofortes and harps; cuts into very good screws, 

 also presses, dairy-utensils, windlasses, wheels and blocks. The 

 young wood is silky-whitish and often handsomely mottled (Robb). 

 The tree likes alluvial river-banks, and has been successfully planted 

 in morassy places, to cope with miasmatic effluvia. 



Platanus orientalis, Linne.* 



The Plane-Tree of South-Europe and Middle Asia. Hardy in 

 Norway to lat. 58 8' (Schuebeler). 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 90 feet and a stem-circumference of occasionally 70 feet,, 

 reaching an age of over 800 years. It resists the smoke in large 

 towns, such as London, better than any other tree, growing vigorously 

 even under such disadvantage. The wood is well adapted for furni- 

 ture and other kinds of cabinet-work. Propagation from seeds or 



