1IaM)i:<iok oi- Tkkks ok 'riiio Xokthkkx Siaiks axd Ca.nada. 4-V.) 



early tinios and is now i)liiiili(l in nil IciiiiH'ratf rofiioiis. its fruit liaviiiK hccii vastly iiiii)r()Vi'(l 

 upon its natural condition, and il lias escaped and become conmionly naturalized lliroufiliout 

 eastern I'nited States and Canada. The trees attain a height of from .'{O-ritl ft., with wide 

 spreading branches and the trunk sometimes 2 or '.i ft. in diameter. The close-iy;rained hard 

 wood is valued in turnery for certain uses. Leaves ovate to oval, mostly rounded or cordate 

 at base, acute or acuminate. irre};ularly serrate, gray-tomentose at first (as are all new- 

 growths), at maturity glabrous dull green above, more or less pubescent beneath and soft in 

 texture; petioles stoiit. FloircfK appearing with the leaves, white or more or less i)ink- 

 Hushed. 1-2 in. across, in close clusters with stout woody pedicels -^-T/o in. long: calyx 

 tomentose. Fruit very various in size and (juality. that of seedling trees not true to the 

 parents and generally inferior. 



Siberian Cuab. I'l/nis iinmi folia Willd. Occasionally found <'S(ap.'<l from cultivation. 

 It is thought to be a hybrid between /'. Maiux L. and the Asiatic /'. haccaia L. Il is a small 

 spreading tree differing from the /'. Mains in having smooth and sometimes entii-e leaves, with 

 longer more slender and smaller leaf and fruit-stems and small firm tai't fruit. 



THE MOUNTAIN- ASHES. GexNus SORB US L. 



Trees and shrubs of about seven widely distributed species of the north temperate regions, 



three being natives of Xoith America and a fourth is a naturalized species introduced from 



the Old World. They have a smooth aromatic bark, stout hranchlets and large buds with 



imbricated scales, the innermost of which are accrescent. 



Leaves alternate, deciduous, pinnately compound (in the American species I with serrate 

 leaflets: stipules caducous. Floirers perfect, regular, white, in terminal compound cymes; 

 calyx with urn-shaped tupe and five persistent lobes imbricated in the bud : petals .">, white, 

 spreading, rounded, with short claw : stamens numerous ; ovary inferior with usually 3 carpels, 

 .'? distinct styles and truncate stigmas; ovules 2 in each cell, erect. Fruit a small red berry- 

 like pome with thin flesh, papery carpels and containing in each cell 1 or 2 pointed erect seeds- 

 with smooth cartilaginous coat ; cotyledons fleshy, plano-convex, with no albumen. 



KEY TO THE SPECIES. 

 a Leaflets glabrous above and 



Long acuminate ; fruit V4 i"- oi" less in diameter S. Americana. 



Acute or obtuse ; fruit about Vs in. in diameter S. decora. 



a' Leaflets pubescent both sides S. Aucuparia. 



For .species sec pp. 238-2'fl and the foUoiviiif/: 

 Old World Mountain-Asii. or Rowan-tree. Sorhus Aucuparia L. This is a round-headed 

 tree sometimes 50 or GO ft. in height with trunk from 1-214 ft. in diameter growing naturally 

 in the forests of northern Europe and Asia. It has been extensively planted in this country 

 for ornamental purposes and has become naturalized in places. Leaves with 0-1.") oblong to 

 oblong-lanceolate leaflets %-2 in. long serrate, entire at base, more or less pubescent both sides 

 especially beneath; branchlets and petioles pubescent; buds tomentose. Floirers Va i"- across 

 in mostl\ tomentose corymbs 4-() in. across. Fruit about l^ in. across. 



THE SERVICE-BERRIES. Genus AMELANCHIER Medic. 



Trees and shrubs with slender branches and long-pointed buds covered with closely 

 imbricated scales, the innermost of which are accrescent. They are of extensive distribution 

 throughout the north temperate regions of both hemispheres. Three arborescent species are 

 known in North America, two of which are found in the Atlantic states and the third in the 

 racilic coast region and eastward to Lake Superior. 



Laves deciduous, simple, alternate, petiolate, serrate or entire, pinnately-veined, con- 

 duplicate in the bud ; stipules linear, pink and caducous. Floirers in racemes with slender 

 bibracteolate pedicels: calyx with campanulate tube, adnate to the ovary, and Ave narrow 

 acute reflexed persistent lobes; disk green, uectiferous ; petals five, elongated, white, with 

 short claws: stamens numerous inserted on the rim of the calyx tube with subulate persistent 

 styles and oblong anthers: ovary inferior with 5 cells each partly divided by a false partition: 

 styles 2-5 united and i)ubescent below. si)reading above, and with truncate stigmas: ovules 

 erect. 2 in each cell. , Fruit a small berry-like subglobose pome, purplish or blue when ripe 

 and crowned with the calyx lobes and remnants of the fliaments. with juicy pleasantly 

 flavored fruit and membranaceous carpels; seeds 5-l(X oblong, compressed, with lirown 

 coriaceous testa, straight embryo and no albumen. 



The name is the pojjular name of the Eurojjean species in Savoy. 



KEY TO THE SPECIES. 

 a Leaves sharply serrate .•in<l 



Ovale to ovate-olilong. a<iile to acuminate at apex A. Canadensis. 



Oblong to elliptical, acute to rounded at apex A. obovalis. 



a' Leaves coarsely dentate towards the rounded ai)ex A. alnifolia. 



For species sec pp. 2'f2-2'i.^ and the foUouiny: 



