1652 ARDOUETL'M AND FRUTICETLM. PART III 



ini; more from P. tr^miila than cither of the last three sorts described, 

 still wc are very much inclined to think that it is a variety of that species; 

 thoui^h we do not feel siiiTuiently sure to venture to indicate this even in 

 parentheses. The trees in the llt)rticu]tnral Society's Garden were, in 1H.3+, 

 from '2.j ft. to yoft. high, after heinsj ten years planted. The P. gra'Va 

 is very subject to the attacks of the pophir hawk moth (Smerinthus populi), 

 the |)uss moth (Cerura vinula), and sometimes to that of other less common 

 /'hal;e'nid;c. (See Man, Xfit. Hist., vol. v. p. 48.) Price of plants, in the 

 London nurseries, 1.?. each; and at lioUwyller, 1 franc. 



Stalhtics. In Kngland, in Surrey, at Pi ;shot Park, KJ years planted, it is 3'> ft. high ; In Durham, 

 at Southend, \i years planted, it is :3.i fi. high ; in ,Monmouthshire, at Woodfield. 10 years planted, 

 it is ;>.') ft. high ; in Uutlandshire, at Ik-lvoir Castle, IH years plante<l. it is .'30 ft. high, the diameter of 

 the trunk S in., and of the head i.'4ft. ; in Sutfiilk, in the I5ury Botanic CJarden, VI years planted, 

 it is ,30 fl. high, the diameter of the trunk 9 in., and of the head 16 ft.; in Worcestershire, at Croome, 

 4<) years planted, it is 60ft. high. In .Scotland, in Perthshire, in Messrs. Dickson and TurnbuU's 

 is'ursery, Perth, I.") years planted, it is 20 ft. high. In Ireland, nc.ir Dublin, in the Glasncvin Botanic 

 «jardcn, 20 years planted, it is 3<J ft. high. In Saxony, at Wcirlitz, 30 years old, it is 30 ft. high, the 

 diameter of the trunk 1 ft. In Prussia, at Berlin, in the Botanic Garden, 10 years planted, it 

 is ^0 ft. high, the diameter of the trunk 6 in., and of the head 4 ft. 



2 7. P. ni'gra L. The black-ic;7iT</, or common black, Poplar. 



Identification. Lin. .Sp. PI., 146*. ; Pall. Fl. Ross., I. p. 66. ; Willd. Arb., 229. ; Sp. PI., 4. p. 8(H. ; 

 Spreng. .Syst. Veg., 2. p. 244. ; Ait. HorL Kew., ed. 2.,5. p. 396. ; Du Roi Harbk., 2. p. 139. ; Raii 

 Svn., 446.; Mill. Diet, No. 3. ; Smith Eng. Bot., t. 1910. ; Eng. Fl., 4. p. 24.5. : Hook. Fl. Scot, 

 289. ; Mackay Fl. Hibern., pt. 1. p. 2j|. 



St/noni/mrs. P., No. 1632., Hall. Hist., 2. p. 302.; P. alba Trap. Hist., 1080. fig.; P. vimfnea Hu 

 Ham. All).; Aigciros, Greek ; Kabaki, Moilcrn Greek ; the old English Poplar, Suffulk ; the Willow 

 Poplar, Cambriiljieshire ; Water Poplar; the female of P. nigra is called the Cotton Tree at 

 Bury -St JEdmunds ; Peuplier noir, Pruplier li.ird. Osier blanc, Fr. ; sch warze Pappel, Grr. 



Tlic Sexes. Both are described in the Enj^. Flora. Numerous male plants of P. nigra grow on the 

 ea-st confines of Bury St. Edmunds, beside the river Lark, of which that figured in Strutt's Si/lva 

 (OUT Jig. 1;J14.) is one. In the male. Smith states that the stamens are " eight, rarely more with 

 us, though Linn<rus and Leers describe 16." A female plant of P. nigra stood, in 1829. on Hardwicke 

 Heath, near Bury St. Edmunds, beside the pond ; and it is said another female plant grows upon 

 the same estate. 



Engravings. Eng. Bot., t. 1910. ; Gcr. Em., 1486., fig. ; and others, quoted in Eng. Flora : T. Nees 

 ab Esenbeck <ien. PI. Fl. CJcrm. ; out Jig. 1513.; and the i)late of this species in our last Volume. 



Spec. Char., Sfc. Petiole somewhat compressed. Di.sk of leaf deltoid, pointed, 

 .serrated with glanded teeth, glabrous on both surfaces. Catkins lax, 

 cylindrical. Stigmas 4, simple, spreading. (Smilli and Sprcngcl.) A tree, 

 from .50 ft. to 80 ft. high; a native of Europe, from Sweden to Italy, on 

 the banks of rivers, and in moist woods ; and found, also, in the north 

 of Africa ; flowering in Britain in March and April. 



Varicfici. 



1 P. 71. 2 vtrkUs Lindl.; P. vJridis, Lodd. Cat., ed. ]8.3G; has the leaves 

 of a brighter green than the species. It was brought into notice 

 by a nurseryman of the name of Nurse, of Bealings, near Woodbridge, 

 in Suffolk, about 1810, or before. There is a plant in the London 

 Horticultural Society's (iarden, and one in the Botanic (iarden of 

 Bury St. Edmunds, and it is propagated in several nurseries. 

 S P. n. ;> saficifo/ia ; P. .^alicifolia Lodd. Cat., ed. 1830 ; has long narrow 

 leaves, not unlike those of 5ali.\ viminalis. Irttroduced i'rom the 

 Floetbeck Nursery in 1834. 



Description. A tree of the largest size, with an ample head, composed'of nu- 

 merous branches and terminal shoots. The bark is ash-coloured, and becomes 

 rough and deeply furrowed with age. The roots, thougii they run along the 

 surface, go dec[)er into the soil than those of cither P. alba or P. tremida, 

 and do not j)rodiice suckers, though the contrary is afhrmed by Miller. The 

 branches are whitish ; and the branchkts are rarely hairy, but are more robust 

 than those of P. monilifera, which are glabrous. The leaves are .slightly 

 notched on their edges, of a pale light green ; and the petioles are yellowish. 

 The leaves are protruded about the middle of May, much later than those of /\ 

 fastigiata, P. alba, or /'. (a.) canescens ; and, when they are fust expanded, 

 their colour appears a mi.\tnre of red and yellow. The catkins are shorter 

 than those of /*. tremula or /'. lilba; they appear before the leaves, in March 

 and April; those of the males are of a dark red, and, being produced in 



