432 ARBORETUM ET FRUTICETUM BRITANNICUM. 
779. P. spectabilis. 
Species of which there are only very young Plants in British Gardens. 
P. Sievérsii Led. Fl. Alt. 2. p. 222., Don’s Mill. 2. p. 647.; P. nov. sp. 
Sievers in Pall. Nord. Beitr.7. p. 292. ; is a bush, with many stems rising from 
the same root; with ovate leaves, rather tomentose; and umbellate flowers, suc- 
ceeded by very acid fruit. A native of Siberia. 
P. ? Schéttii Ledeb.— Plants in the Hort. Soc. Garden. 
P. stipuldcea Hort.— Plants in the Hort. Soc. Garden, raised from seede 
received from the Himalayas. 
t 
§ iii, Ata Dec. 
Sect. Char., §&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. Prod., ii. p.635.)—Decidu- 
ous trees, natives of different parts of Europe, and of Asia ; chiefly found 
on dry, calcareous, or clayey soils, and varying much under cultivation. 
The species and varieties are in a state of great confusion. 
¥ 21. P. A’nia Ehrh. The White Beam Tree. 
Identification. Ehrh. Beitr., 4. p. 20.; Dec. Prod, 2. p. 636. 3 Don’s Mill. 2. p. 647. 
Synonymes. Crate‘gus A‘ria_ var. « Lin. Sp. 681.; Méspilus A‘ria Scop.; Sérbus A‘ria Craniz 
Austr. 1. t.2. £.2., Bauk. Hist.1. p.65.; Aria Theophrast? L'Obel; white wild Pear, white 
Leaf Tree, red Chess-Apple, Sea Ouler, Cumberland Hawthorn, Gerard; Alisier Allouchier, 
Alisier blanc, Fv.; Mehlbeerbaum, or Mehlbaum, Ger. ; Aria, or Sorba montana, Ital. ; Mostaco, 
Span. ; Axelbeer, Dan. ; Oxilbeer, Swed. 
Derivation. Aria, 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 Allouchier is from allouchion, the cog of a wheel, the wood of the tree being much used for 
that purpose 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. 2.3; Eng. Bot., t. 1858. ; Fl. Dan., t: 302. 
Spec. Char. §c. Leaves ovate, doubly serrated, tomentose heneath, with ap- 
pressed white tomentum. Corymbs flat. (Dec. Prod.) A deciduous tree. 
