910 ARBORETUM AND FUUTICETUM. PART III. 



P. Siev^rsW Led. Fl. Alt., 2. p. 222., Don's Mil/., 2. p. 647. ; P. nov. sp. Sttvers in Pall. Kord. 

 Beitr., 7. p. 293., is a bush, with many stems rising from the same root; with ovate leaves rather 

 tomenlose, and umbellate flowers, succeeded by very acid fruit. It is a native of Siberia; and it is 

 rather remarkable that it has never been introduced into England. 



§ iii. A^'ria Dec. 



Sect. Char., S^c. Petals spreading, flat. Styles mostly 2 — 3. Pome globose. 

 Flowers in racemose corymbs; the peduncles branched. Leaves simple, 

 not glanded, whitely tomentose beneath. (Dec. Prof/., ii. p. 635.) Deciduous 

 trees, natives of various parts of Europe, and of Asia ; chiefly found on 

 dry, calcareous, or clayey soils, and varying much in a state of culture. The 

 species and varieties are in a state of great confusion. 



t 21. P. ^^Ri.v Ehrh. The White Beam Tree. 



Identification. Ehrh. Reitr., 4. p. 20. ; Dec. Prod., 2. p. 636. ; Don's Mill., 2. p. fyl7. 



Synonymes, Cratae'gus Wria var. a. Lin. Sp., G81. ; jVi'spilus Aria Scop.; Surlus /I'ria Cranlz 



Austr., 1. t. 2. f 2. ; Jiauh. Hist., 1. p. 65. ; -■i'ria Theophr^sti L'Obel. ; white wild Pear, white Leaf 

 . Tree.red Chess-Apple, Sea Ouler, Cumberland Hawthorn Gerard; AlisierAUouchier, Alisicrblanc 



Fr. ; Mehlbeerbaum, or Mehlbaum, Ger. ; Aria, or ijorba pilosa, Ital. ; Mostaco, Span. ; Axelbeer^ 



Dan. ; Oxilbcar, Sivcd. 

 Derivation. A'^na., the name given to this tree by Theophrastus, is probably from the name of that 



country in Asia. The White Beam Tree is a pleonasm, beam being the Saxon word for tree. The 



word Alloucliier is from allouchion, the cog of a wheel, the wood of the tree being much 



used for that iiurpose in France. Mehlbaum is literally the meal tree, from the mealy appearance 



of the under side of the leaves. 

 Engravings. Crantz Austr., 1. t. 2. f. 2. ; Eng. Bot., t. 1858. ; Fl. Dan., t. 302. 



Sj^ec. C'har.y S,-c. Leaves ovate, doubly serrated, tomentose beneath, with ap- 

 pressed white tomentum. Corymbs flat. (^Dcc. ProcL, ii. p. 636.) 



Vai'ieties. 



2 P. A. 1 obtHs'ifolia Dec. Prod. ii. p. 6.36., and Fl. Dan., t. 302.; P. A. 

 ovalis Hort. — Leaves broadly ovate, and obtuse. 

 P. A. 2 acutifolia Dec. Prod., 1. c. ; CVata;Vus longifolia X.Du Ham., 

 4. t. 34.; PPyrusalpina Willd. Emim., 527.; which has ovate-oblong 

 acute leaves. 



$ P. A. 3 umluldtn Lindl. Hort. Trans., vii. p. 234., and our plate in Vol. 

 IL, has the leaves flat, oval-lanceolate, broad, undulated, unequally 

 and deeply serrated, acuminated, and cobwcbbed above. 



5^ P. A. 4 angn.'ilifoHa Lindl., 1. c, has the leaves oval, obtuse, concave, 

 somewhat simply serrated, woolly above. 



2 P. A. 5 nigosa Lindl., 1. c. — Leaves large, ovate-elliptic, doubly ser- 

 rated, shining above and wrinkled, white beneath. 



2 v. A.G crcHca Lindl., I.e.; P. A. rotundifolia //o;7. ; P. graeVa i/or/. 

 — Leaves flat, orbicularly elliptic, crcnately serrated, retuse, cune- 

 ated at the base ; smooth above, and hoary beneath. Branches 

 cobwebbed. 



3f P. A. 7 bulldta Lindl. Hort. Trans., vii. p. 234. ; P. A. acuminata 

 Hort.; has the leaves concave, elliptic, acuminated, blistered; closely 

 serrated at the apex, but entire at the base. 



Description, Sfc. This tree rises to the height of 30 ft. or 40 ft. in favour- 

 able situations, with a straight, erect, smooth trunk, and numerous branches, 

 which for the most part tend upwards, and form a round or oval head. The 

 young shoots have a brown bark, covered with a mealy down ; the leaves are 

 between 2 in. and 3 in. long, 1* in. broad in the middle, light green above, and 

 very white and downy beneath. The flowers are terminal, in large corymbs, 

 2 in. or more in diameter, and they are succeeded by scarlet fruit, which makes 

 a very conspicuous appearance in the autumn, but of which the tree seldom 

 bears two good crops in succession. The rate of growth, when the tree is 

 young, and in a good soil, is from 18 in. to 2ft. a year: after it has attained 

 the height of 15ft. or 20ft. it grows much slower; and, at the age of 

 twenty or thirty years, it grows very slowly ; but is a tree of great 

 duration. The roots descend very deep, and spread very wide; and the head 

 of the tree is less affected by prevailing winds than almost any other. Li the 

 most exposed situations, on the Highland mountains, this tree is seldom seen 



