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ARBORETUM AND FKUIMCI-TUM. PART III 



1256 



fecundation : if so, the shells of the fruit of any walnut tree may be 

 rendered tender, by removing all, or the greater part, of the male 

 catkins, the moment they appear. 



It J. r. 4 serotina Desf.; Nux .Tuglans fructu serotino Bauh Pin., 417., 

 X. Du Ham., iv. p. 174.; Noyer tardif, Noyer de la Saint-Jean 

 Bon. JarcL, ed. 1836, p. 472., Noyer de Mai in Dauphine. The late- 

 vegetating Walnut. — This is a most valuable variety for those dis- 

 tricts where the frosts continue late in spring. In France, about 

 Paris, its leaves do not appear before the end of June; but the fruit 

 ripens nearly as early as that of the other varieties. In the London 

 Horticultural Society's Garden, there is a plant of this variety, 5ft. 

 or 6ft. high, which, on the 1st of July, 1835, when every other tree in 

 the garden was in leaf, had not burst a single bud. 



f J. r. 5 lacinidta; Nux ./uglans foliis laciniatis Reneaulm., N. Du 

 Ham.fiv. p. 174.; Jiiglans heterophylla HorL; J. /ilicifolia Lodd. 

 Cat., ed. 1836 ; the Fern-leaved Walnut Tree, has cut leaves, some- 

 what like those of i*raxinus excelsior salicifolia. 



Other Varieties. The above are the most remarkable and valuable of the 

 varieties of the common walnut; the first three, on account of their fruit; 

 and the last, as a curiosity, on account of its leaves. But in the Bon Jardinier 

 five others are enumerated; and in the Horticultural Society's Fruit Cata- 

 logue for 1832 nine are given, of which the most valuable for cultivation for its 

 fruit is the highflier; a variety which was originated at Thetford, in Norfolk, 

 and which is held in much esteem in that county and in Suffolk. {Hort. 

 Tram., iv. p. 517.; and E. o/Gard., ed. 1835, p. 942.) There is also the 

 Yorkshire walnut, which is much planted in that county. The varieties 

 recommended by Mr. Thompson, as having proved the most prolific in the 

 Horticulture] Society's Garden, are, the round early oval; the double large 

 French, No. I. above; the tender-shelled, No. 2.; and the thick-shelled. 



A variation, worth notice, was displayed in a nut sent to us by Mr. 

 Samuel Taylor of Wliittington, near Stoke Ferry, Norfolk, which had 

 nearly three perfect valves, but was devoid of kernel. 



DttoripHon. The walnut forms a large and lofty tree, with strong spread- 

 ing branches* The leaves have three or four pairs of leaflets, terminated by an 

 Odd one, which il longer than the rest,. The male catkins are pendulous, and 

 roduced near the points of the shoots. The bark is thick, and deeply 

 furrowed on the trunk ; hut. on the upper branches it is grey and smooth. 

 The leaves, when brur.ed, exhale a strong aromatic odour; and, in the ex- 

 treme heat of -summer, the exhalations from them are so powerful, as to 

 produce unpleasant eneCtl upon some persons, if they slumber under the 



