SPIK.KA 



S1»IR.?^A 



1701 



rower, olilanceolrttc: Hs. smalln-, yi'llowisli white; pr.li- 

 oels t;ialinm«; petals ..l)iivate, simrter than stamens; 

 floH'ei-s soniowhat earlier, but less slii.wy, Var. Slabel- 

 lata, Zahel ( .s', ll,il„ll,)l,i . Bert.il. .S', hiiperU-lfiili,! . var, 

 (•M».)/i(, Biiiss. A: Huhsel, Ijvs, ohovate to ebovate-lau- 

 ceolate, aeute, ineisely serrate at the a]>e>c or entire on 

 the tloweriun' branehes, \'ar, obovata, Maxim, i^', vh«- 

 rillil. Wahlst, L>c Kit.), Lvs, ol.(jvafe, rimiuleil at the 

 apex, erenate above the middle, S, 1'], En, Var, trun- 

 cata, Zabel (S. thulicti-o'ides, Hort., not ball, I, Lvs, 

 bre>adly obovate to oblonsr-obovati', truneate and cre- 

 iKitelv dentate at the apex, Sil.ieria, 



2363, 

 Spiraea Thunberg 



(XN,) 



r^,'/ 



3, Thiinbergii, Sieb, Piu', 2:!(;:!, Shrub, ,5 ft, high, with 

 spr'-adini; or arcliinir ^ranches: lvs, sharply serrulate, 

 l-b^4 in, long; lis, ^jure wliite, about /a in. acru,ss, in 

 3-5'tbl. naked umbels; petals obovate, much longer than 

 stamens; foUioles with the spreading .stvles below the 

 apex. April. May. China. -Japan. S.Z.l-.K). G.P. 8;84, 

 85. — A very graeetnl early-th>\vering shrub, the slender 

 arcliing branches clothed with feathery bright green 

 foliage, turning late in fall to orange or scarlet. Almost 

 hardy, but tips of branches sometimes killed b}^ severe 

 frost; valuable for seaside planting. 



4. arguta, Zabel( 5. Thituhetr/ii x iiiuJtifi^n-n). .Similar 

 in habit to the former but higher and more vigorous ; 

 lvs. oblong-obovate to oblong-oblanceolate, sharply^ and 

 sometimes doubly serrate, glabrous at length, l-]:'4 in. 

 long; fls. pure white, ^^ in. across, in many-ild. umbels, 

 mostly w'ith small lvs. at the base; pedicels glaltrons; 

 petals broadly obovate, almost twice as long as .stamens. 

 May. Of garden origin. G.(J. III. 22:3. Gng. 7:291. 

 F.E. 11:160. G.P. 10:44:!. M.D.G. 11)110:10. -The most 

 free-tlowering and showy of the earlier Spireas; quite 

 hardy. 



.5. multiSldra, Zabel (S. crenAta x Jnipericifdlia). 

 Shrul), 5 ft. high, with slender, arching branches: lvs. 

 obovate, cuneate, serrate above the middle, usually ;i- 

 nerved, glabrous at length, about 1 in. long; fls. yjure 

 white, in many-tld. umbels, sessile on the upper, borne 

 on leafy stalks on the lower part of the branches. May, 

 Of garden origin,— Handsome shrub similar to the 

 former, but blooming a little later, 



6. pruni!61ia, Sieb. &■ Zuce. Graceful shrub, 6 ft. 

 high, with upright slender pubescent branches; lvs. 

 ovate to oblong, denticulate, pubescent beneath, 1-2 in. 

 long; fls. pure white, about /^ in. across, on slender 

 pedicels, in :i-6-fld. umbels; petals obovate, longer than 

 stamens. May. China, Japan. — ^'ar. !16re plfino. Pig. 

 2364. Fls. double, rather large. S.Z. 1:70. P. S. 2:153. 

 Gn. 53, p. 185. A.G. 18:425. P.E. 9:,503, Mn. 3, p. 42. 

 Very handsome, early-flowering shrul), with dark green, 

 shining foliage, turning orange in fall. The single-fld. 

 form is less sliowy and rare in cult. ; its foliage is lighter 

 and not shining. 



7. cana, Waldst. & Kit. Dense, bushy shrub, 3 ft. 

 high; lvs. ellipjtic to oblong, acute at both ends, usually 

 entire, grayish pubescent on br)th sides, more densely 



l>rm'ath, ^-,,~\ ill. hnii^: lis. V, 

 lik(^ vuuhcl.s; ])('lals a))i.ut as 

 rcllrxed in fruit. I\lay. S. 

 but uot vei'y showy. 



8. alpina, Pall. Slinih, 4 

 arching, anyuhir, re<l(iish hi<)\ 

 obovate to obhiiiccohil i-, aculr 

 penniiiervt.M.1, i.,-] in. Ii.ii;j;: I 

 shorf-stalk.Ml. suiall i^Habrous 

 littlr sliortur tliaii staiucns; si 

 ch'S curving outward. May, . 

 ishrul), with graceful foliage. 



'.1. crenata, biun. (.S'. c real folia, V. A, :\[('y.). Shrub, 



3 ft. higli, with slendrr striped bra.iichcs: Ivm. obloug- 

 ol.)ovatc to oidaiieeolatr, acutr at l)oth ctkLs, crcnately 

 serrate toward tlic apex, grayish gr.-iaj, ()nberuh.)us be- 

 neath when youii--, ::-iicrv-ed, ' .j -1 '., in. loiii;-: fl,s. white, 

 rather snuili, in <h-Hse almost senii-gloltos(^ iimbel.s; pet- 

 als roundish ol)ovate, shorter than stamens: sejials up- 

 right in fr. : follicles with erect styles. May. 8. E. En. 

 to Caucasus and Altai. L.B.O- 13:'i:^;j2. — Hardy. 



10. Pikowi6nsis, Bess. {S. cmiu/a x media. S. JViroK- 

 dierti, Hort.). ,Shrub, 4 ft. high, with terete u[iriglit 

 branches: lvs. oblong, cuneate at base, witli few sliar|i 

 teeth at the apex or sometimes entire, ].)enniner\'ed to 

 .'!-nerved, almost glal)ro\is, 1-2 in. lung: lis. white <jr 

 greenish white, in niauy-fld. almost glabr-ous umbels; 

 petals orbicular, sliorTcr than stamens: si^|.ia]s upright 

 in fr. ; follicles with tlic upriii:ht style somewhat below 

 the apex. May. — Sup[)oscd natural ]iyl>rid, found wild in 

 Fodolia, in Poland. 



n. bracteata, Zabel {S. jVi/i/'onica , Maxiin. .S'. media, 

 var. rofaudifolla , Nichols.). Shrub, 8 ft. high, with 

 upright or spn-adiug branches, (.[uite glabrous : lvs. 

 r<.)undish oi)Ovati', usually erenate at the apex, dark 

 grei^n above, bluish green beneath, of lirnj t<^xture, 

 ^4-l''4 in. long: fls. oxrv ^;, in. across, in und)el-like ra- 

 cemes, sometimes conif'^md at the iiase; petals orbicu- 

 lar, longer than stametis; sepals spreading in fr. June. 

 Japan. (h<). II. 23;2S:i. — Desirable hardy shrub of vig- 

 orous growth with showy umbels of pure white fls. ai;id 

 dark green ljan<lsome foliage remaining fresh until late 

 in fall. 



12. Bliimei, G. Don [S. rH/»'stris, Sieb.). Shrub, 



4 ft. high, with spreading ami ar(diing branches: lvs 

 ovate to rhombic-ovate, ineisely crenate-serrate, pale 

 "bluish green beneath and rather prominently veined, 

 %-\'J4 in. long: fls. pidygamous, white, in many-fld. 

 umbels; petals roundish obovate, about as long as sta- 

 mens: follicles with spreading orreflexed styles. June, 

 Japan. B.H. 8:.'iG.— Not hardy north, rare in cultiva- 

 tion; often the following or other sjiecies are mel with 

 under its names. 



2364. 

 Spirasa prunifoUa, var. 

 flore pleno (X ya)- 



1.';. trilobata, Tjinn. {S. triloba, Linn.). Fig. 2.'.Hj.j. 

 Slirul), 4 ft. high, with slender spreading branches: lvs. 

 almost orliicuhir, incis{Ml-dentate and often 3-lobed, 

 obtuse, pale bluish green l}eneath. .^2-1 in- long: fls. 

 pure white, in nuuiy-fld. umbels; sepals iipright in fr. : 

 follirles with ascending styles. Mav, June. N. China 

 to Sil.)eria and Turkestan. L.B.C. 13:1271. G.F. 1:452.- 



