726 



ARBORETUM ET FRUTICETUM BRITANNICUM. 



1. P. RICHA'RD/ Michx. Richard's Planera, or Zetkoua Tree. 



Identification. Michx. Fl. Bor. Amer., 2. p. 248. ; Bieb. Fl. Taur. Cauc. Suppl., 1. p. 187. 



Synonymes. P. crenata Michx. Mem. sur le Zelkoua ; P. carpinif61ia Wats. Dend. Brit. t. 106. ; 

 P. creniita Desf. ; .Khamnus carpinifblius Pall. Fl. Ross. ; li. wlmd'des Guldenst. It. 1. p. 313. and 

 427. ; t/'lmus crenata Korl. Par. ; U. parvifdlia Willd. Baum. ; U. camp^stris Walt. Fl. Carol. 



p. 

 fo 



. . . . . . . camp^stris . . . 



. iii. ; U. polygama Richard Act. Paris 1781 ; U. nemoralis Ait. Hort. Kew. ed. 2. p. 108. ; U. 

 foliis crenatis basi asqualibus, fructu ovoideo, non compresso, Poiret Encyc. Meth. iv. p. 611. ; le 

 Zelkoua, or Orme de Siberia, Fr. ; Richard's Planere, Ger. 



Engravings. Pall. FJ. Ross., 1. t. 60. ; Dend. Brit., t. 106. ; the plates of this tree in Arb. Brit, 1st 

 edit., vol. vii. ; and our fig. 1404. 



Spec. Char., fyc. Flowers solitary in the axils of leaves ; and both flowers 

 and leaves borne on a shoot that is developed in the same year with them- 

 selves. Petiole of leaf not obvious ; disk of leaf elliptical, unequal at the 

 base, dentate. (N. Du Ham.) A large deciduous tree. West of Asia, and 

 upon the shores of the Caspian Sea ; and to Imiretta and Georgia, on the 

 south of Mount Caucasus. Height 50ft. to 70 ft. Introduced in 1760. 

 Flowers greenish white ; April and May. Fruit white ; ripe in October. 

 The base of the trunk does not swell out, like that of most other trees, 

 its thickness being very little greater at the surface of the ground than it is at 

 the point of ramification. Like that of the hornbeam, it is marked with 

 longitudinal furrows, like open gutters. The 

 head is large, tufted, and very much branched ; 

 but the branches, though widely extended, are 

 more slender, and more vertical in their direction, 

 than is generally the case with forest trees. 

 The bark of the trunk is not grey and cracked, 

 like that of the elm or the oak, but resembles 

 rather that of the hornbeam or beech. In British 

 gardens, the rate of growth of this tree is 

 similar to that of the beech or common horn- 

 beam ; it attaining the height of 20ft. in 10 

 years. The wood, when cut obliquely, re- 

 sembles that of the robinia, and presents, like 

 it, numerous interlacements of fibres. It is 

 very heavy, and, when dry, becomes so ex- 

 tremely hard, that it is difficult to drive nails 

 into it with a hammer. In the countries where 

 it is abundant, it is employed for the same 

 purposes as oak; 

 and it is found 



to be even superior to that wood for furniture. 

 Its colour is agreeable ; it is finely veined ; and 

 its texture is so compact, and its grain so fine, 

 as to render it susceptible of the highest polish. 



2. P. GME'LINZ Michx. Gmelin's Planera. 



Identification. Michx. Fl. Bor. Amer., 2. p. 248. ; Desf. Hist. 



des Arbres et Arbriss., 2. p. 446. 

 Synonymes. P. wlmifolia Michx. Arb. Amer. 3. p. 283. t. 7. ; 



P. aquatica Willd. Sp. PI. 4. p. 967. ; Anonymus aquaticus 



arbor, &c. Walt. Carol. 230. 

 Engravings. Michx. Arb. Amer., t. 7. ; North Amer. Sylva, 



3. t. 130. ; Du Ham. Arb., ed. nov., 7. t. 21. : and our Jie. 



1405. 



Spec. Char., fyc. Flowers in heads, opening 

 before the leaves are protruded, and borne 

 on branches or branchlets, developed in some 

 previous year. Leaf with an obvious petiole, 

 and a disk ovate-acuminate, equal at the base, 

 and serrate. A deciduous shrub or low 

 tree. Kentucky, Tennessee, and the banks 

 of the Mississippi. Height 20 ft. to 30 ft 



1104. P. Richardi. 



