704 



SPIE.BA 



31. albiildra, Min. {S. Japonii-n dlha, Kegel. S. Itn- 

 cdittha, Lange). Fig. 23U7. Low shrub, 1^ ft, high, 

 with stiff, upright branches: Ivs. lanceolate, coarsely 

 or sometimes doubly serrate, glabrous, 1-2 in. long: lis. 

 ■white, in dense corymbs, one large terminal and many 

 smaller ones below, forming a liind of raceme; disli 

 prominent; sepals retlexed in fr. : follicles upright, not 

 or little diverging. July, Aug. Japan. 



;i2. supSrba, Zabel (S. albifldra x corijmhdsa). Low 

 shrub, with striped dark brown branches: Its. elliptic- 

 obloug to oblong, acute at both ends, simply or doubly 

 serrate, almost glabrous, 1-3 in. long: fls. rather large, 

 pink or almost whitish; disk prominent; petals orbicu- 

 lar or broadlv nborate. June, July, (if garden origin. 



2367. Spiraa albiflora (X J's). 



.33. corymbdsa, Rat. {S. crat:egifdlia. Link.). Low 

 shrill), witb usually little-liranciied stems, rarely to 3 

 ft. higli: l)r:LiJcbes purplish brown: Ivs. llroadly oval to 

 ovate, acutish, coarsely and often doubly serrate, espe- 

 cially above the middle, pale Ijluish green beneath antl 

 glabrous, l?-2-3 in. long: tls. white, rather small, in 

 somewhat convex usually putiescent corymbs, l%-'.l in. 

 across; petals oval: ff>llic]es and stvles upright. ]Mav, 

 June. N. J. to Ua. L.B.C. 7:(;71. 



34, Wcida, Dougl. Closely allied to the former: 

 branches yellowish brown or brown: Ivs. more incisely 

 serrate, oval or nln.ivah-: corymb glabrous, usually 

 looser and more Ihit. liroad'-r. June, -July. Dakota to 

 Brit. Col. and Oingon. The allied S. VirginUna, 

 Britf.., is more bi';uH'li(-d and higher: Ivs. oblong to oii- 

 lanceolaJc, dcntalr above the middle or almost entire: 

 inflorescciirc glabrous. Va. to N. C. B.B. 2:197. 



35. betulifdlia, Pall. Tjow, much-branched shinib : Ivs. 

 oval to obovate or obovate-oblong, usually cuneate at 

 base and very short-petioled, serrate or crenately ser- 

 rate, obtuse, glabrous or slightly pubescent on the veins 

 beneath, ■'.i-m in. long: corymb usually glabrous, 1-2 



spir-i:a 



in. across. June, July. .Siberia to Manchuria, Kams- 

 chatka and Japan. — The two preceding and the follow- 

 ing species are all closely allied and considered by 

 some liotanists as varieties of -S. betn It folia. 



'Mi. densiildra, Nutt. {S. hrlnlifolia . var. roxta, Gray. 

 >S'. r'l.Siui , K()ehne. ^'. arhihriila , (irc<'ne). Low, much- 

 branched shrub: Ivs. very short-petioled, oval to ovate, 

 obtuse, crenately serrate, '%-\]'i in. long: fls. bright 

 pink, in dense corymbs 1-2 in. across. June-Aug. Ore. 

 to Calif., southern Manchuria. (_-i.F. 10:413. 



Section '>. Spir.a.kia (Species Nos. 37-49). 



A. I>iflore.i(:<'iit<- 'i lirii'iil piniicte, 



about as brood as hnjli. {HijbruU 



of special of Ihis and Ihv pret-t^d- 



i,i,i serlioii.) 



K. Poiiirle.-i rallii-r sinoll.oii lalerol 



bnni.dihdx al tin- rod of la.st 



f/ro r's bra oidits 37. Fontsnaysii 



BB. Pa nirh's lary , hronaal on lotu/. 

 iij'ri'/lif bra ocftcs. 

 C. Lvs. {/Itrbroa.-^ or orarh/ .so. 



D. Aper of Irs. oriilr 38. conspicua 



DD. Ape.r of li's. ohiosc or 

 acatisli . 

 E. ^linpr of Irs, broadhj 



orate or oborair 39. notlia 



EE. SJiapr of lr:>. obUnaj or 



oral-oblong 411. pyramidata 



CO. Lrs. pabt'sccnf or tonientosr 

 bfnettth . 



D. Base of Irs. anitr 41. Sanssouciana 



DD. Base of Irs. roiuidrd 42. Nobleana 



AA. Panicles elonijati'd, hnnjrr llioo 

 broad. {Spiraria proper. ) 

 B. Poliar/e glabrous or nearlif so. 

 0. Lrs. sharphf serrate, e.i:eept 

 at the rerij tmse. 

 D. Panicles tome nliilose . 



E. Fls. light /link 43. salicifolia 



EE. Pl.'<. while 44. alba 



DD. Panicles glabrons 45. latifolia 



OC. IjVS. coarselij serrate aboce 



the middle: fls. pink 4(1. Menziesii 



BB. Foliage pubescent oe lonientose 

 bencafh . 

 C. Follicles ghfhrous: lrs. grag- 

 ish err whitish lumcnlose be- 

 neath. 



D. Lrs. acute al both ends 47. BUlardu 



DD. Lrs. rou)tdi'd oe lieaelu so 



at both cuds ' 48. Douglasi 



CC. Follicles /nibcsccnt: h's. usu- 

 ally light tau-nij bencuth.A9. tomentosa 



37. Fonteniysii, Billard (.s'. Fontunuijsiensis. Dipp. 

 S.cancseens x sulici folia). Shrub, (i ft. high, with slen- 

 der, upright branches : Ivs. oval or oblong-oval, rounded 

 at both ends, crenately serrate aliove the middle, pale 

 bluish green beneath, almost glalirous, 1-2 in. long: fls. 

 white or pink, in 1'2-3-in. long panicles; petals orbicu- 

 lar, aliout as long as stamens; sei.)als spreading in fruit. 

 June, July. Of ganleu origin.— Not .|uite hardy north. 

 Var. alba,' Zabel, is the white-fld.. v:ir. rbsea, Zabel, the 

 pink-fld. form. S. pruindsa, Hort. {S. brachylnifri/s, 

 Lange. .S'. laruriosa , Hort. ,S'. canescens x Vouglusi). 

 is a similar form, but the Ivs. aretomentose beneath and 

 the fls. pink. 



3,1. conspicua, Zabel { S. albifliiru x ,ilbu]. Upright 

 shrub. 3 ft. high, with dark lu-own pnberul.jus branches : 

 Ivs. iJliptir-obh.ng, acute at botb ends, simjily or doubly 

 serrate, almost glabrous, l^,2-2Vi in. long: lis. pinkish 

 white, in broail flnely pubescent panicles; petals shorter 

 tha,n stamens. Julv-Sept. — Handsome form. A similar 

 hvbrid is S. ayringseildra, Leni. (L. albifldra x salici- 

 fiitia], with obbing-lani-eolate or lanceolate Ivs. serrate 

 above the niiildle anil innk fls. Closely allied is also 

 S. semperflbrens, Zahel {S. Japonica x salicifMiu. li- 

 Japdnicu or Fortunei, var. paniculilfn, Hort.). Higher 

 than the former: Ivs. oblong-laiiceidate, usually donbly 

 serrate: lis. pink. K.H. lS(i(l, p. 4WG, 497. On. 45. p. 48- 



