1688 



4 173 174 -A\< 

 resembles more i 

 forms are not i 

 The most distii 

 mtla, "Sarg / 

 Ifts 7-11 oral to 



1 ^ the eastern form 

 es and intermediate 

 northeastern states 



(jrayi, Wenz (var pn 

 Wats ) Shrubby 



btuse with only a few 



2352. Sorbus Americana {X%). 



confounded with the preceding species; bottt are very 

 handsome in autumn with their large clusters of bright 

 red fruits. Sometimes a form of S. hybrida is found in 

 American nurseries under the name of S. sambucifolia. 

 {Cor>yius and Hybrid group, species 5-7) 



5. dom^stica, Linn. (P!)rus Sorbns. Gaertn. P. do- 

 mfo(ica, Smith. C6rmns domistica, Spach). Service 

 Tree. Fig. 2353. Round-headed tree, 30-60 ft. high: 

 winter-buds glutinous: petioles tomentose ; Ifts. 11-17, 

 obovate-oblong to oblong, sharply and rather coarsely 

 serrate, with acuminate teeth, usually entire near the 

 base, green and glabrous above, floccose-tomentose be- 

 neath, at least when young, 1-2)4 in. long: fls. white, 

 % in. across, in broadly pyramidal rather loose, tomen- 

 tose corymbs: fr. %-i]4 in. across, usually yellowish, 

 with red or orange cheek, apple-shaped in var. inaliS6r- 

 mis, Lodd., pear-shaped in var. pyri!6rmis, Lodd. May. 

 S. Eu., N. Afr. and W. Asia. G.C. 11. 1:283; 6:649. 

 M.D.G. 1897:376-378. — This species is often confounded 

 with the European ash, from which it is almost indis- 

 tinguishable without fruits or flowers, except by the 

 glutinous winter-buds. 



6. hjbrida, Linn. ( Pyrus pinnaitfida, Ehrh. P. Fin- 

 nica, Babingt. S. intermedia y. Aucup&ria). Tree, at- 

 taining 40 ft., of regular, pyramidal habit with upright 

 branches: young branchlets and petioles whitish tomen- 

 tose; Ivs. ovate to oblong-ovate, with 1-1 pairs of de- 

 current Ifts. at the base, or but pinnately lobed, upper 

 part lobed with the lobes becoming gradually shorter 

 and more indistinct toward the apex, dark green above, 

 whitish or grayish tomentose beneath, 2^2-5 in. long; 

 petioles about 1 in. long: fls. }^-K in. across, in tomen- 

 tose corymbs about 3 in. broad: fr. globose-ovoid, K in. 



high, 

 with thi 

 usually 

 S.Aur, 

 ovate tc 

 the Ifts 

 often - 



ral hvbrid, occasionally tound 



two different hybrids are 



\ybrtda ; the typical one is 



wbir-h has the Ivs. oblnng- 



SORBUS 



ovate- to ovate- oblong Ivs., somewhat more deeply 

 lobed, 2K-4 in. long, with 8-10 pairs of veins, Ifts. and 

 lobes broader and obtusish, with the veins usually 

 curving upwards. This is known in gardens as S. quer- 

 cifdlia hybrida ndna, Var. deciirrens, Koehne {S. lanu- 

 gindsa, Hort., not Kit.), is a transition to S. Aucupa- 

 ria ; only the 3 or 5 upper Ifts. are connate into a ter- 

 minal 1ft., which, like the upper separate Ifts., is decur- 

 rent at the base, under side less densely tomentose. In 

 some nurseries under the name of S. sambucifolia. 



7. BpiUria, Pers. {Pyrns heterophyUa, Dur. S. Au- 

 cupdria x arbufifdlia). Shrub or small tree, attaining 

 15 ft., with slender, sometimes pendulous branches: 

 Ivs. ovate to oblong-ovate, obtuse, with 2-6 lobes or Ifts. 

 near the base, simply crenate-serrate toward the apex, 

 l%-3}4 in. long, pubescent or glabrous beneath: fls. 

 white or pinkish white, in pubescent or glabrous co- 

 rymbs 1-1 K in. broad: fr. subglobose or pear-shaped, 

 dark purple or almost black. May, June. Of garden 

 origin. B.R. U:1190.-Sometiraes cultivated under the 

 name 6'. (/»(>/rifo;;(( floribimda iinim. Hybrids of dif- 

 ferent origin are usually uniti d uihIit n'. spuria; the 

 more pubescent forms Willi Jurl imri- 

 the offspring of *;.- 1 ' - 



the more glabrous I i 



I>robably 

 '/.!, while 

 ish fruit 

 - parents, 

 pointed 



nave s . ^ucuparia ainl s. i,. /-,,,,,-,, 



A similar form with quite glabrous : 



Ivs., originated at the Arnold Arboretum and probably 



a hybrid of S. Americana and i'. melanocarpa, was 



named S. Sdrgenti, Dipp. 



(Torminaria group, species No. 8.) 



8. torminaiiB, Crantz {Piirus tormincllis, Ehrh. Tor- 

 wiHfirJa (o«ni»(5;js, Dipp. T. C7««ij, Rcem.). Wild 

 Service Tree. Round-headed tree, with spreading 

 branches, 40-80 ft. high: Ivs. broadly ovate, slightly 

 cordate to broadly cuneate at the base, with several tri- 

 angular-ovate, serrate lobes on each side, the lower 

 sinuses reaching about half way to the middle, floccose- 



when young, 2-4 in. long; petioles 1-1% in. 

 white, }^ in. across, in broad, rather loose 

 corymbs: fr. oval, ^A-% in. high, brown, 

 dotted. May, June. Southern and middle Europe.— 

 The foliage turns bright red in fall. 



(Aria group, species9-12.) 



9. latifdlia, Pers. (Pijrus rofundifdUa, Bechst. P. 

 intermedia, var. latifdlia. Ser. P. Aria, var. latifdlia, 

 Hort. Tormiiutria latifdlia, Dipp. S. Aria x tormi- 

 ncllis). Tree, attaining 50 ft., similar to the preceding: 

 Ivs. broadly ovate to ovate, usually rounded at the base, 

 pinnately lobed with short, broadly triangular, sharply 

 serrate lobes and with 6-9 pairs of veins, grayish or 

 whitish tomentose beneath, 2%-i in. long: petioles 

 K-1 in. long: fls. about % in. across, in broad, tomen- 

 tose corymbs : fr. globose or globose-ovoid, about J^ in. 

 high, orange to brownish red. May, June. Occasionally 

 occurring in middle Europe. 



2353. Sorbus domestica (X J.,) 



intermedia, Pers. {POrus intermedia, Ehrh. Sir- 

 ^. "-;.?((■«, Fries, ^rt'a Suecica, Koehne. Hdhnia 

 '<:i. Dipp.). Tree, 20-40 ft. high, with oval head: 

 ■ vate to oblong-ovate, broadly cuneate at the base, 



