1672 ARBORETUM AND FRUTICETUM. PART III. 



minal branches of trees are liable to be injured by severe frost; but in the 

 climate of London this chiefly applies to plants in the nurseries. The Caro- 

 lina poplar roots from cuttings with some difficulty ; and, therefore, in British 

 nurseries, it is commonly propagated by layers. In ornamental plantations, 

 it ought always, as Miller advises, to be planted in situations where it will 

 be sheltered by other trees ; and, where it is wished to attain its full size, it 

 ought always to be planted in good soil, and near water. In North America, 

 where it grows in the swamps of Carolina, it is accompanied by the Taxo- 

 dium distichum, Nyssa biflora, A^cer rubrum, C'arya aquatica, ^uercus lyrata, 

 Populus canadensis, and P. heterophylla. 



Slatis/ics. VdpiUus angultlta in Britain. At Syon, it is 83ft. high, diameter of the trunk 3ft., 

 and of the head t)l ft. : see the pLite of this tree in our last Volume. At Ham House, Essex, it is 

 70 ft. high, diameter of the trunk 2J ft., and of the head 45 ft. In Durham, at Southend, 15 years 

 planted, it is &') ft high. In Sufl'olk, at Ampton Hall, 57 years planted, it is f>4 ft. high ; the diameter 

 of the trunk 2 ft. 3 in., and of the head y5 ft. In Yorkshire, at Grimston, 12 years planted. It is 50 tt. 

 high. In the Experimental Garden, Invcrleith, 9 years planted, it is 15ft. high. 



Pdpiitus anguli'ila in Foreign Countries. In France, at Is'antes, in the nursery of M. De Nerriferei, 

 60 years old, it is 80 ft, high, with a trunk IJft. in diameter ; in the Botanic Garden at Avranchea, 

 24 years planted, it is SO ft. high; the diameter of the trunk IJ ft, and of the head 30 ft. In 

 Austria, at V'ienna, in the University Botanic Garden, Syeirs pLinted, it is 24 ft. high; at Briick 

 on the Leytha, 70 years old, it is 80 ft. high, the diameter of the trunk 2j ft., and of the head 48 ft. 

 In Bavaria, at Munich, in the English Garden, 16 years old, it is 15 ft. high. 



Commercial Statistics. Plants, in the London nurseries, are \s. 6d. each ; at 

 Bollwyller, 1 franc and 50 cents ; at New York, 20 cents. 



5^ 13. P. heterophy'lla L. The various-shapedAeaved Poplar Tree. 



Identification. Lin. Sp. PI., 14ftl. ; Ait. Hort. Kew., ed. 1., 3. p. 407., ed. 2., 5. p. 397. ; Michx. Fl. 

 Bor". Amer., 2. p. 244. ; WiUd. Arb., 233., Sp. PI., 4. p. b06. ; Pursh Fl. Amer. Sept., 2. p. 619. ; 

 Spreng. Syst. Veg., 2. p. 244. 



Sifnonytnes. P. magna, foliis amplis, aliis cordiformibus, aliis subrotundis, primoribus tomentosis 

 " Oron. J'irg., 194. 157. ; P. cordif61ia Burgsdorf, Lodd. Cat., edit. 1834 ; P. argtntea Michx. SortA 

 Amer. Sylva, 2. p. 235. t. 97. ; Cotton 'I'rce, Mic/ix. X. A. S. 



The Sexes. Michaux the elder has noticed some characters of the flowers of both sexes Sn his cha- 

 racter of the species in the Fl. Bor. Amer. ; and they will be found translated in our specific 

 character. Only the male is in British gardens. 



Engravings. Michx. Arb., 3. t. 9. ; Michx. North Amer. Sylva, 2. t. 97. ; N. Du Ham., 2. t 51. ; and 

 OUT fig. 1534. 



Spec. Char., ^c. Shoot round, tomentose. Leaf, while young, tomen- 

 tose; afterwards less so, or glabrous. Petiole but slightly compressed. Disk 

 roundish ovate, having a small sinus at the base, and being slightly auricled 

 there (or, as Michaux, jun., has expressed 

 it, with the lobes of the base lapped, so as 

 to conceal the junction of the petiole), 

 blunt at the tip, toothed; the teeth shal- 

 low, and having incurved points. Male 

 flowers polyandrous. Female flowers gla- 

 brous, situated distantly along the glabrous 

 rachis, and upon long pedicels. {Michx, 

 sen., and Pursh.) A tree, a native of •' 

 North America, from New York to Caro- ! 

 lina, in swamps, and more particularly in \ 

 the country of the Illinois, and on the '• 

 western rivers. It grows there to the 

 height of 70 ft. or 80 ft. ; flowering in 

 April and May. It was introduced into 

 England in 1765; but we have never seen 

 plants of it higher than 5 ft. or 6 ft. ; 

 though a specimen tree in the Mile End Nurser}', and another at Syon, 

 must have been planted more than 50 or 60 years ; and though it is said by 

 Bosc to be a loftv tree in the neighbourhood of Paris. It is a very remark- 

 able species, from the particular character of its leaves, which, though as large 

 as, or larger than, those of P. angulata, and something resembling them in out- 

 line and in position on the branches, yet have nearly cylindrical footstalks, 

 and their disks hanging down on each side from the midrib in a flaccid manner, 

 not observable in any other species of the genus. According to Michaux, 



