SPIR-EA 



SPIRAXTHES 



3215 



53. Billiardii, Herincq (S. Douglasii x S. salicifolia). 

 Shrub, 6 ft. high, with brown pubescent branches: Ivs. 

 oblong to oblong-lanceolate, acute, sharply and often 

 doubly serrate, except in the lower third, usually gray- 

 ish-tomentose beneath, at least when young, sometimes 

 almost glabrous at length, 2-3 in. long: fls. bright pink, 

 in 5-8-in. long, tomentose or tomentulose panicles usu- 

 ally rather narrow and dense. Julj", Aug. Of garden 

 origin. H.F.5:24. F.E. 18:613. S. Lennedna,S. bethle- 

 hemensis rubra, S. triumphant, S. eximia, S. Constantly, 

 S. califtrnica, Hort., are very similar and probably of 

 the same parentage. 



54. Douglasii, Hook. Fig. 3669. Shrub, 8 ft. high, 

 with reddish brown, tomentose branches: Ivs. oblong to 

 narrow-oblong, rounded or acutish at both ends, 

 unequally serrate above the middle, densely white- 

 tomentose beneath, l>-4 in. long: fls. deep pink, in 

 dense, rather narrow or sometimes broad panicles, 4-8 

 in. long; stamens twice as long as the obovate petals; 

 sepals reflexed in fr.: follicles glabrous. July, Aug. 

 Brit. Col. to Calif. F.S. 2:66. R.H. 1846:101. P.M. 

 12:195. B.M. 5151. Gn. 23:246. 



55. tomentdsa, Linn. HARDBACK. STEEPLEBUSH. 

 Shrub, 4 ft. high, with upright, brown, tomentose 

 branches: Ivs. ovate to oblong-ovate, acute, unequally 

 and often doubly serrate, densely yellowish or grayish- 

 tomentose beneath, 1-2 }/ in. long: fls. deep pink or pur- 

 ple, in narrow dense panicles, brownish tomentose and 

 3-8 in. long; stamens somewhat longer than the obovate 

 petals; sepals reflexed: follicles pubescent, usually 

 diverging. July-Sept. Xova Scotia to Ga., west to 

 Man. and Kans. B.B.(ed. 2) 2:245. Em. 2:485. 

 Gn.M. 5:344. Var. alba, Rehd. (f. albiflora, Macbride). 

 With white fls. F.E. 8:833. Gng. 5 : 149. This species 

 does not spread by suckers like most others of the sec- 

 tion Spiraria. All the last-named species are valuable as 

 late-blooming shrubs and decorative with their showy 

 panicles of bright or deep pink fls. They appear at their 

 best when planted in masses in the wilder parts of the 

 park in low ground. 



S. Aiichisonii, Hem3L=Sorbaria Aitchisonii. S. amurensis, 

 Maxim. =Physocarpus amurensis. 5. ariaefolia, Smith=Holo- 

 discus discolor var. arisefolius. S. Aruncus, Linn.=Aruncus 

 Sylvester. S. assimilig, Zabel iS. densiflora X S. japoniea). Low 

 shrub, with pink fls. in broad corymb-like panicles. Garden hyorid. 

 .?. astilbotdes, Moqre=Astilbe astilboides. S. Bowsieri, Carr.= 

 Holodiscus Bqursieri. S. brumalis, I-ange (probably S. expansa X 

 S. alba). Medium-sized shrub, with oblong, incisely serrate, almost 

 glabrous Ivs. and pinkish white fls. in broad and loose corymb-like 

 panicles. Aug.-Oct. Garden hybrid. S. aespitdsa, Nutt.=Petro- 

 phytum csespitosum. S. calcicola, W. W. Smith. Shrub to 5 flu, 

 with slender arching branches: Ivs, small, obovate or elliptic, 

 entire, glabrous: fls. white, pink outside, in 6-8-fld. umbels. S. W. 

 China. S. camttchdtica, Pafl.=Filipendula camtschatica. S. capi- 

 tate, Pursh=Physoearpus capitatus, S. cinerea, Zabel (S. cana X 

 ericifolia). Medium-sized shrub, with small, oblong, usually 

 entire, pubescent Ivs. and white fls. in short-stalked umbels. Gar- 

 den hybrid. S. concinna, Zabel (S. albiflora xS. ezpansa). Me- 

 dium-sized shrub, with lanceolate, sharply serrate, almost gla- 

 brous Ivs. and pinkish white fls. in broad corymbs. Garden 

 hybrid. 5. compdcta multiflora, Hort.=AstiIbe japoniea var. ^S. 

 eonferta, Zabel (S. cana X S. crenata). Medium-sized shrub, with 

 small, ovate to oblong-lanceolate, 3-nerved, entire or crenate Ivs, 

 and white fls. in dense, small, peduncled umbels. Garden hybrid, 

 -.hiirica, Maxim., is closely allied to S. alpina, but not yet 

 intro. S. canescens and Sorbaria sorbifolia are sometimes cult, 

 under this name. S. dasydntha, Bunge. AUied to S. chinensis. Lvs. 

 ovate, cuneate at the base, incisely serrate or lobed, with grayish 

 white tomentum beneath: inn. grayish tomentose: stamens half as 

 long as petals. X. China. S. Ddrulii, Hort.=Astilbe Davidii. S. 

 diflormis. Zabel (S. alba xS. corymbosa). Medium-sired shrub, with 

 oval to oblong-lanceolate, serrate, almost glabrous Ivs. and white fls. 

 in large corymb-like panicles. Garden hybrid. S. diyitata, WilkL= 

 Filipendula palmata.-^5. dif color, Pursh=Holodiscus discolor. S. 

 dumosa, Xutt.=Holodiscus dumosus. S. Filipendula, Linn.=Fili- 

 pendula hexapetala. S.flssa, Landl.=Holodiscus fissus. S. flori- 

 bunda. A trade name of indiscriminate meaning. S. semperflorens 

 and Sorbaria sorbifolia are sometimes met with under this name. 

 S. gemmata, Zabel CS. mongolica, Hort., not Maxim.). Allied to S. 

 alpina: axillary buds much longer than petioles: Ivs. small, 

 penninerved, oblong-lanceolate, usually entire: fls. white, in 

 short-stalked, rather few-fld. umbels. Mongolia. S. GiestUriana, 

 Zabel (S. cana x S. chamsedryfolia). Medium-sized shrub, with 

 ovate, sharply serrate Ivs. and rather large white fls. in long- 

 stalked umbels. Garden hybrid. S. yiganiea, Hort.=Fili- 

 pendula camtschatica. S. gracilis. Maxim. (S. vacciniifolia, 

 Lodd., not Don). Low shrub, allied to S. canescens, with 



slender, arching branches: Ivs. small, ovate, obtuse, entire or 

 crenate above the middle, quite glabrous: fls. white, in hemi- 

 spherical loose corymbs. Himalayas. L.B.C. 15:1403. >S. grandv- 

 flora, Sweet=Sorbaria grandiflora, >S. grandiflora, Hook-= 

 Exochorda racemosa. 5. Hacquetii, Fenzl & Koch. Closely allied 

 to S. decumbens, but grayish-pubescent and with the sepals upright 

 or spreading in fr. N. Italy, TyroL iS. Hookeri, garden name, 

 applied to S. nudiflora. S. bella, S. expansa, S. tristis, and others, and 

 also- to Exochorda racemosa. S. Humboldtii, Hort. = Aruncus 

 Sylvester. 5. inflexa, Koch (S. crenata xS. mollis). Medium- 

 sized shrub, with slender arching branches: Ivs. elliptic-oblong, 

 entire, sparingly pubescent beneath: fls. white, rather large, in 

 many-fli stalked umbels. Garden hybrid. S. japoniea., Hort., not 

 Linn. f.=Astilbe japoniea. S. kamaonemis spicata, Hort., is a form 

 of S. semperflorens. S. kamxchdtica, Auth.=Filipendula camt- 

 schatica. S. Ixngata, Linn.=Sibirsea bevigata- ^. fariflbra, LindL 

 =S. vacciniifolia- S. Lindleyana, WalL=Sorbaria Lindleyana. 

 S. lobata, Gronov.=Filipendula rubra. S. micropetala, Zabel (S. 

 hypericifolia x S. media). Medium-sized shrub, with grayish green, 

 obfong^obovate Ivs., entire or serrate at the apex, 3- or penninerved: 

 fls. white or greenish white, in umbels on leafy or naked stalks. 

 Garden hybrid. S. MiOefolium, TorT.=Chamsebatiaria Millie- 

 folium. S. Jtliyabei, KoidzumL Allied to S. bella and S. japoniea. 

 Lvs, ovate, incisely serrate, glabrous, l$$-2H in. long: infl. 1 J4-2 

 in. long, puberulous: fls. white, perfect: stamens much longer than 

 petals: follicles upright, style spreading. Japan. Var. glabrata, 

 Rehd. Lvs. broadly cuneate at base: infl. glabrous. Cent. China. 

 Var. pilosida, Rehd. Lvs. pubescent on the veins beneath: infl. 

 sparingly pilose. Cent. China. This species is very similar to S. 

 cnamaedryfolia in habit and foliage and also in the individual fls. 

 but is easily distinguished by the compound corymb. Hardy at the 

 Arnold Arboretum, S. mottifolia, Rehd. Allied to S. alpina and S. 

 cana. Spreading shrub, to 6 ft. : winter buds acuminate, 3-valved, 

 longer than petioles: Ivs. elliptic-oblong or oblong, entire or with few 

 teeth at the apex, villous on both sides, ^z-?.in. long: infl. villous: 

 fls. Hin- across, white: follicles upright, pubescent. W. China. 

 S. mollis, Koch (S. canaxS. media). Similar to S. media: Ivs. 

 smaller, usually entire, pubescent: fls. smaller, umbels pubescent. 

 Garden origin, S. mongolioa, Maxim., is closely allied to S, crenata, 

 but not yet intro.; the S. mongolica of gardens is S. gemmate. S. 

 monogyna, Torr. & Gray=Physocarpus monogynus. S. myrtil- 

 loidf-s, Rehd. Allied to S. alpina. Shrub, to 8 ft. : Ivs, oval to obo- 

 vate-oblong, entire, obtuse, rarely acutish, cuneate at the base, 

 slightly pubescent beneath, J^-Hin. long: infl. dense, hemispherical, 

 on short leafy branchlets: fls. white, Jiin. across: follicles upright, 

 glabrous. Wl China. Very graceful shrub. S. nepalensis, a garden 

 name applied to several species, as S. micropetala, S. canescens, S. 

 salicifoua. S. nfrea, Zabel (S. canescens x S. expansa). Similar 

 to S. canescens in habit, corymbs larger and looser: Ivs. coarsely 

 doubly serrate, pubescent, 1-2 in. long: fls. white or pinkish white. 

 Garden hybrid. 5. nudiflora, Zabel (S. bella xS. ulmifolia). 

 Medium-sized shrub, with ovate, doubly serrate, almost glabrous 

 Ivs, and pinkish white fls. in hemispherical corymbs. Handsome, 

 almost hardy shrub. Garden hybrid. S. opulifdlia, Linn.=Physo- 

 carpus opulif olius. S. oxyodon, Zabel (S. chamaedryf olia x S. media ). 

 Similar to S. media, but branches angular: Ivs. narrower, follicles 

 with the styles terminal and spreading. Garden hybrid. S. Pdliasii, 

 Don=Sorbaria grandiflora. S. palmata, PalL=Filipendula 

 palmata. S. palmaia, Thunb.=Filipendula purpurea. ^S. pal- 

 maia, Linn.=Filipendula rubra. S. parrifdUa, BertoL=S- gracilis. 

 S. pectinata. Ton. & Gray=Luetkea pectinata. 5. rmrtscens, 

 Zabel (S. expansa X S. japoniea). Medium-sized shrub, with oblong, 

 coarsely serrate Ivs., pubescent on the veins beneath: fls. light to 

 deep pink, in large corymbs; blooming in summer and usually again 

 in falL Garden hybrid. S. rfbifolia. Nutt.=Physocarpus capitatus. 

 5. rufertJ, Zabel (S. ruberrima, Dipp. S. Douglasii xS. ezpansa). 

 Upright medium-sized shrub, with oblong-lanceolate, coarsely ser- 

 rate TVS. tomentose beneath, and deep pink fls, in ovate panicles. 

 Garden hybrid. S. Sehinabfekii, Zabel ;.S. chamsedryf olia x S. 

 trilobata)." Medium-sized shrub, with arching branches: Ivs. ovate 

 to oblong-ovate, doubly serrate, glabrous: fls. white, rather large, 

 in peduncled umbels : petals longer than stamens. Handsome shrub, 

 similar to S. Vanhouttei, Garden hybrid. S. sorbifolia, Linn.= 

 Sorbaria sorbifolia. S. Tobolskia, Lodd.=Sorbaria sorbifolia. S. 

 trifolidta, Linn.=GiUenia trifoliata. S. tristis, Zabel. Hybrid of 

 unknown origin, similar to S. expansa, but corymbs and the whitish 

 pink fls. smaller; sepals upright in fr. S. Ulmdria, Linn.=Fili- 

 pendula Ulmaria. S. vaccinifolia, D. Don (S. laxiflora, Lindl.). 

 Shrub, to 2 ft., with arching branches: Ivs. long-petioled, ovate, 

 crenately dentate, almost glabrous, *i-l Yi in. long: fls. whitish, in 

 tomentose corymbs, 1-3 in. across. June, July. Himalayas. F.S. 

 7, n, 190. iS. vaccinifolia, Lpdd.=S. gracilis. S. tncfinifolia, 

 Hort.=S. canescens, S. brumalis, S. venusta, Hort.=Filipendula 

 rubra var. venusta. S. venvstvla, Kunth & Bouch6=S. vaccini- 



ALFRED REHDER. 



SPIRANTHES (name Greek, referring to the 

 twisted spikes). Orchidaceae. LADIES' TRESSES. Ter- 

 restrial herbs, few of which have any horticultural 

 value; some of the hardy species are advertised by 

 dealers in native plants and by collectors. 



Erect herbs with fleshy or tuberous roots: Ivs. mostly 

 at the base or on the lower part of the st.: raceme 

 terminal, twisted; fls. spurless, small or medium-sized; 

 sepals free or more or less united at the top, or united 

 with the petals into a helmet; labellum sessile or clawed, 

 concave, embracing the column and spreading into a 



