12 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



covered on both sides with long hairs. The fruit is conspicuous and 

 ornamental, yellowish green when ripe, and easily distinguished by the 

 bracts which usually adhere to it. It is of large size for the genus, 

 about an inch in diameter, and is said to be much eaten by the 

 Armenians. A variety glabra we have is very similar in the outline of 

 the leaf, but there are no hairs, and the fruit is red and without the 

 bracts. It is probably a hybrid. 



29. Juglans nigraL. (Elwes and Henry, ii. 262). Black Walnut. 

 This is a very handsome tree, but the value of its wood alone makes 



it important. The specimen tree of the Cambridge Botanic Garden 

 is 54 ft. 7 in. high, 54 ft. through, and 6 ft. 3 in. in girth four feet from 

 the ground. It was probably planted about 1846, when the Botanic 

 Garden was established on this site. Here it is growing in a somewhat 

 sheltered position, but the soil is certainly not favourable for good 

 growth. The finest tree known is growing in the London County 

 Council Park of Marble Hill, Twickenham, in rich alluvial soil, close 

 to the Thames. In 1905 it measured 98 ft. in height, the stem girthing 

 14 ft. 3 in. at 5 ft. up. It transplants badly on account of its long, 

 fleshy tap-roots, and should be sown where it is desired to grow it 

 if possible ; but Mr. Elwes recommends, for localities liable to 

 late spring frosts, that seeds should be sown in boxes at least 2 ft. 

 deep, the seedlings being planted out when a year old. " As this 

 tree requires to be well sheltered and drawn up by surrounding 

 trees in order to form a tall and valuable trunk, it should be sown 

 or planted in small, deeply-dug patches in a rich wood, kept free 

 from weeds and protected from mice, rabbits, and boys, until the 

 trees are 6 or 8 ft. in height, which they should be under favour- 

 able circumstances at four or six years after sowing." The seeds 

 grow easily, and it is recommended that they should be obtained 

 from Canada or New England, as likely to produce stronger plants 

 than the seeds produced by English-grown trees. In Germany 

 Black Walnut thrives only on deep, moist, rich soils, and is said to 

 have succeeded only on the best Oak lands. Schwappach advocates 

 close planting with Beech and Hornbeam as nurses. It has been 

 extremely successful near Strassburg. With regard to the value of 

 the timber, Mr. Elwes says that though he has been unable to obtain 

 proof of Boulger's statement as to its freedom from insect attack, 

 the furniture he has had made from English-grown trees is distinctly 

 superior to that of common Walnut, and is as good as imported Black 

 Walnut in colour. In nature the tree can attain a height of 150 ft., 

 and logs 12 ft. long, with a diameter of 52 in., have been obtained. 



30. Cedrela sinensis A. Juss. (Elwes and Henry, ii. 433). 

 There is not much reason, probably, for including this tree, since 



much finer ones are to be found in France, but it is interesting. This 

 specimen is 35J ft. high and 32 ft. through. The original tree, intro- 

 duced to the Jardin des Plantes, Paris, by Simon in 1862, was 40 ft. 

 high in 1891. It was first described by Carriere as Ailantlms flavescens, 



