Spiraea 



( 353 ) 



Spiraea 



or shrubby habit. Unfortunately the synonymy ' 

 is very obscure. (See also ASTILUE and NEILLIA). 



Propagation. By division in the greater number 

 of cases, by seeds, and the shrubby species by 

 cuttings of the young: wood struck under a hand- 

 light, or by the rooted suckers. 



Soil. Many, especially the herbaceous plants, 

 prefer a moist soil and thrive splendidly by the 

 water side. The shrubs grow in any good loam. 



In Pots. Many of the Spiraeas do well in pots 

 if grown in a similar way to Astilbe (Spiraea of 

 gardens) japonica, and several force well. For 

 this the earlier shrubby species are very suitable 

 and make pretty ornaments for the conservatory. 



Shrubby Spiraeas. The requirements of these 

 line shrubs are as varied as their character, but all 

 will thrive in u good loam. The greater number 

 of the vigorous growing species, such as salicifolia. 

 like plenty of moisture, and will do well by the 

 side of a stream or pond ; while others, such as 

 Inillata and canescens, are good plants for rock- 

 eries or banks of stiff soil.- In pruning, the habits of 

 the different species should be studied. Japonic:!, 

 Douglasi, salicifolia, and other quick-growing 

 species which flower on the current season's 

 wood, should be well thinned in spring, and the 

 shoots should be cut back well to encourage strong 

 branches, from which the best inflorescences are 

 borne. Arguta, Thunbergi, and others of the 

 spring-flowering set require thinning after flower- 

 ing, but no shortening is required Prunifolia 

 flore pleno is improved by thinning, and the 

 removal of old flowering wood as soon aa the 

 flowers fade. Several other species, such as dis- 

 color, merely require the removal of dead wood, 

 severe pruning being detrimental. 



Principal Species, Hybrids, and Varieties: 

 Aitchisoni, 6' to 8 , Aug. , tomeutosa nrgentea and 



Sep., hdy. shr., yel. 

 urguta, 3 , sura., hdy. 



shr., wh. , hybrid (xi/n. 



multittora alba), 

 aria-folia (see disco'.or 



Tar.). 

 Aruncus, 4' to 6', Je., 



hdy. per., vvh.; several 



vars. 

 astilboides, 2', Je., hdy. 



per., wh.; a popular pot 



pliiut (si/us. Astilbe 



astilboides and A. 



spira'oides, referred to 



S. Aruncus by Index 



KtwnuU), 



floribunda, a superior 

 variety. 



Lemoiuei, a pretty hy- 

 brid. 



bella, 2' to 3', Jy., hdy. 



shr., red (syns. omoena 



and ovata). 

 camtsehatica, 4' to 10', 



Je., hdy. per., wh. (syit. 



gigantea). 



- hybrida or " Edge 



Hall," pk. 

 discolor, 4' to 10', sum., 



Inly, shr., dull wli. (MB 



p. 354). 



arisefolia, 8', Je., wh. 



dumosa, dwarf er (.W//AV. 

 dumosa and Bour- 

 sieri). 



Douglas!, '',' to 9', Aug., 

 hdy. slir., ro. (*i/. 

 53 



Menziesii). 

 Filipendula, 1\' to 3', Je., 

 hdy. per., wh. Drop- 

 wort. 



flore pleuo, double 

 flowers. 



japouica, 2' to 6', Je., 

 hdy. ev. shr., ro. (*///*.*. 

 callosa, bellioides, ami 

 Fortune!). 



alba, wh. (SI/UK, albi- 

 flora, callosa florr-albo, 

 and laneeolata of gar- 

 dens, not Poir). 



Anthony Waterer, 

 criin. 



Bumalda, criin. (xyn. 

 Bumalda). 



superba, crim. (xyn. 

 callosa superba) . 



glabrata and ruberrima 

 are other vars. 



japonica of gardens (r 

 Astilbe japonica). 



liudleyana, 4' to H', Aug., 

 hdy. shr., wh. (</ 

 //. 8MY. 



media, 2' to 4', Je., hdy. 

 shr. , wh. ('<//M*. conf usa 

 and oblongifolia). 



palmata, 1' to 2', Ji 1 ., hdv. 

 per., crim. 



alba, wh. 



elegans (of gardens), 

 wh..rt'd ; possiblya var. 

 of TJlmaria. 



purpurea, Ivs. pur. 



S Fish, Edinburgh. 



CAXTOXIEXSIS. 



pruuifolia, 3', spr., hdy. 



shr., wh. 



flore pleno, double. 

 Thunbergi, 1' to 3', spr., 



hdy. shr., wh. (*yii- 



Thompson!). 

 TJlmaria, 2' to 4', Je., hdy. 



per., wh. Queen of 

 the Meadow, Meadow 

 Sweet. 



- - aureo- variegata, foli- 

 age variegated. 



- flore pleno, a pretty 

 double form.. 



Other Species and Varieties : 



amurensis (now Neillia 

 amureusis.) 



arbuscula, dwarf shr., ro. 



betulifolia, 1' to 2', Je., 

 hdy. shr., wh. (AV/W.V. 

 chama'drifolia var. bet- 

 ulifolia and splemleiis . 



corymbosa, more 

 numerous flowers (>////>. 

 corymbosa, chamssdri- 

 folia var. corymbosa, 

 and arctica). 



Blumei, 3' to 6', sum., 

 hdy. shr., wh. (*.</. 

 chama'driftlaof Blume, 

 not Limueus, and rupes- 

 tris). 



bracteata, 2' to 3', Je., 

 hdy. shr., wh. fafK. 

 media var. rotundifolia, 

 nipponini, and rotuudi- 

 folia alba). 



bullata, 1' to 1^', sum., 

 hdy. shr., pk, (.// 

 rrispifolia), 



caispitosa, 0", sum., hdy. 

 shr., wh. 



callosa, of Thunberg is 

 japouica ; of Wallieh, 

 Cat. N. 707, is bella. 



cana, 1' to 2', Je., hdy. 

 shr.. wh. (*//*/.-.. liyprr- 

 icifolia and regeliana 

 of gardens, not Koch). 



canescens, 4', sum., hdy. 

 shr., pk. or wh. (many 



xi//".. flagelliformis, 

 fingellaris, and hyper- 

 icifolia creuata, etc. ; 

 , /;. 352). 



myrtifolia, Myrt'e 

 leaved. 



cantoniensis, 3* to 4', 

 sum., hdy. ev. shr., wh. 

 (.//>/*. reeve siana, 

 corymbosa, japonica of 

 Sieb., and laneeolata; 

 rre figure). 



flore pleno, double 

 flowers. 



eliama-drifolia, 1' to 2', 

 Jy.,hdy. shr., wh. (*//*. 

 c'eanothifolia and ulmi- 

 folia of Scop.). 



flexuosa, smaller 

 flowers. 



chiiiensis (wr dasyautha). 

 crenata, sum., hdy. 



shr., wh. 

 dasyantha, 2', Mch., wh. 



(xifnn. chiuensis of 



Maxim, and pubescen 



of Lindley) . 

 decuiubeus, trailer, sum., 



hdy. shr., wh. (/" 



procumbens). 

 digitato, '!' , Jy., hdy. 



per., red, referred to 



palmate by ln<l>j- 



I\' //v mi -. 



ex]insa. ft* bellil\ 



Foxii. referred by ludtj- 



