2SG PYKUS. 



suiiiinit, mid thus lioariiii; tin- cliaraficr of art, it is ada|)t(*d for j)articular situa- 

 tions wluTf tlif violi-rit contrast cxliibiltMl by troos ol {^ictMri'S(|U(' torins would 

 be iiiliarnionious. In sutnuit-r. wlicu clotlu'd with leaves, it tonus a coiujtacl 

 green mass, till it is rulljfd by ili' breeze, wlien, like the alx'le, it suddenly 

 assumes a mealy wbiteuess. l-'rom its hardy nature, it will withstand the 

 fiercest and the coldest winds, and yet will nevi'r (ail to grow erect, and jiroduce 

 a regular head : and tor this reason, it is well adapted for sheltering houses and 

 gardens where the situations ar<' nuicli exposed. 



1. 7'>/v/j///a/-/V/. characterized by (hit. spreadiuir ])eta1s. with shrirt claws; from 

 two to (ive connected glabrous styles; pome toj)-shaped at the base, and trun- 

 cate at the tip, with but little juice; sepals deciduous; leaves angled, with lobes, 

 glabrous wlien adult; flowers in corymbs, with the peduncles branched. In this 

 section is included the gripintr-fruited or common wild service-tree, (Pyrus tormi- 

 nalis.) native of various parts of Ijiirope, and of western Asia; and in its gene- 

 ral character, in regard to constitution and habit, greatly resembles the trees of 

 the division Aria. 



;"S. ErinJohiis. cliaracterized by flat, spreading petals, with short claws, and 

 with about three teeth at the tip; styles, five in number, long at the base, very 

 hairy, and somewhat connected; pome globose, glabrous, crowned with the lobes 

 of the calyx, which are tomentose upon both surfaces ; leaves palmately lobed, 

 and glabrous ; flowers upon nnbranched pedicels, disposed in corymbs. This 

 section includes tiie three-lobed-leaved pear-tree, (Pyrus trilobata,) a native of 

 Mount Lebanon, which grows to the height of twenty feet. 



6. Sorbiis, characterized by flat, spreading petals ; from two to five styles ; 

 globose, or top-shaped pome ; impari-pinnate, or pinnately-cut leaves ; and flow- 

 ers occurring in branched coryndjs. The trees compreliended in this division, 

 are natives of northern and western Asia, Europe, the Himalayas, and North 

 America, and like those of the section Aria, are much confounded, and bear 

 a great variety of names. Besides the mountain ash. or fowlers service-tree, 

 (Pyrus aucuparia.) and its varieties, this section includes the auricled service, 

 (Pyrus auriculata,) a native of Egypt; the piiinatifid-leaved service, (Pyrus pin- 

 natitida.) indigenous to Gothland, Tliuringia, and Britain; and the true' service- 

 tree, (Pyrus sorbus.) a native of Europe, western Asia, and northern Africa, 

 cultivated for ornament, and celebrated for being the hardest and the heaviest of 

 all European woods. 



7. Adc}wrnchls, characterized by spreading petals, each with a claw, and a 

 concave limb; from two to five styles; globose pome; simple leaves, with the 

 midribs bearing glands on the upper surface; and the flowers occurring in 

 branched corymbs. This section is so unlike the others in habit and general 

 appearance, that, at some future time, it will probably form a distinct genus, 

 and perhaps will be classified with the common hawthorn, (Crataegus oxycantha.) 

 as the trees in the two divisions will probably prove to graft reciprocally upon 

 each other. Among the trees of this section, are included the arbutus-leaved 

 aronia, (Pyrus arbutifolia.) and its varieties, which consist of deciduous shrubs, 

 natives of Xorth America, growing to a height of four or five feet, and distin- 

 guished for their prolific flciwers, and red, dark-purple, or black fruit; the downy- 

 branched aronia, (Pyrus pubens,) and the large-leaved aronia, (Pyrus grandifolia,) 

 both of which are also natives of North America, and well deserve a place in 

 every collection. 



8. Chammmespilus, characterized by upright, conniving, concave petals; two 

 styles; ovate pome; simple, glandless leaves; and flowers occurring in capitate 

 corymbs. This section comprehends the European dwarf medlar, (Pyrus chama3- 

 mespilus.) a compact bush, bearing an abundance of flowers, and orange-coloured 

 fruit, grafts readily on the common hawthorn, and deserves to be extensively 

 introduced in collec<^''>ns. 



