nTDRAMil-'.A 



them sterile. — Tho grecnhouso Hydrangea. .June, .Tnly, 

 but blooming in winter under glass. A large number of 

 varieties have been introduced from .Japan and China, 

 where this specie.s has been extensively cultivated for 

 many centuries, and where it is native. The following 

 are some of the best known. They m.ay l>c divided into 

 2 groups : 



(1) Japonica group: cymes flnl, with xtrriU: and ferfile 



floii'ers. 

 Var. acuminata, A. Gray ( /7. aciiminAta, Siib. & 

 Zucc. II. Biirgeri, Sielt. & Zucc). Lvs. ovate-lanceo- 

 late, acuminate, sparingly appressed-pubescent: sterile 

 Hs. with elliptic entire sepals, usually blue. S.Z. SO-.'iT. 

 Var. Azisai, Maxim. (H. A-isiti, Sieb.). Lvs. elliptic- 

 ovate, glabrous : sterile tls. with obovato sepals, long- 

 pedieelled, overtopping the fertile ones. S.Z. 51. Var. 

 Belzdni, Maxim. {II. Belzonii, Sieb. & Zucc. H. Jupoii- 

 ic.a, var. c<£rulea. Hook. //. Jfipoidca^ var. C'ernles- 

 i:ens, Regl.). Of dwarfer and stouter habit : lvs. ovate 

 or obovate, short- acuminate, glalirous, somewhat thick; 

 sterile til. whitish, pinkish or bluish, with rhombic, usu- 

 ally entire sepals. S.Z. 5.5. B.M. 4125:!. Here belongs 

 also var. Imp&ratrice Uirgt'nie with pink tls. R.H. 

 1868:471. Var. Jap6nica, Maxim. (H. Japonica, Sieb.). 

 Lvs. ovate to ellii)tic, acuminate, glabrous : sepals 

 broadly ovate, toothed, pink. S.Z. 5;i. B.K. yo:01. R.H. 

 Wli'-W {as H. acuminata). Var. macros^pala, Rgl. Dif- 

 fers from the former only by its larger sepals. Gt. 

 15:520. Var. M^riesi, Hort., seems also not much differ- 

 ent, but has somewhat broader h's., and the pink sterile 

 fls. are very large, S-SK in. across, (in. 54:ll!l(i. <t.C. 

 IIL 2^, suppl. 5-28. Var. rosAlba, Van Houtte (//. Xi'jkZ- 

 leifi, Hort,). Lvs. ovate or elliptic-ovate, acuminate, 

 sparingly hairy: sepals dentate, ovate or broadly ovate, 

 white and pink or white changing to yiink. S.S. Ifi: 11549- 

 50. R.H. 1860:430. Gn. 46 :'.)«(). Var. serr^ta, Rehd. 

 {S. serrata, DC. M. TJtunbergi, Sieb. & Zuuc. H.cyn- 

 nea, Hort.). Lvs. elliptic or ovate, narrowed at both 

 ends, serrate, sparingly appressed-hairy, l^o-.3 in. long: 

 cymes small, 3-4 in. broad: tls. pinkish ortduish; seyials 

 roundish, obtuse or emarginate. S.Z. 58. (1.0.1870:1690. 



(2) Hortennia group: cifnics filobos'', irith almo.^t at! 



fls'. steri'te. 

 Var. nigra, Arb. Kew. (//. JltaiKLstiiirira. Koehne. 

 /T". opttlo)des, var. cyanoctadti, Dipp. Jl. nigra, Carr. 

 II. ramulis coccintis and ram. pictis, H<.irt.). Branches 

 dark purple or violet, often almost black : lvs. ovate- 

 elliptic, acute: cynu^.s large, with purple peduncles: se- 

 pals pink or bluish, obovate. A.F. 5:.'i60. Var. Hort6n- 

 sia, Maxim. Lvs. large, elliptic, glabrous : se()als 

 broadly ovate, entire, usually pink. This is the form 

 which first came into cultivation outside of .Japan and 

 China, and is said to have been introduced from (.'liina to 

 Englandinl790,bv Joseph Banks. B.M. 438. G.C.III. 

 24:45. Gn. 45, p. 13; 50, pp. 123, 256, 367; 52:281. Var. 

 Otiksa, Maxim, (ff. Otaksa, Sieb. & Zucc). Fig. 1113. 

 Dwarfer, but of vigorons growth : lvs. oljovate, shfu-t- 



iiydbani;|':a 



785 



acuminate, r.-ither thick, glabrous: sepals obovate, en- 

 tire, pink or blue. S.Z..')2. F.S. 17:1732-33. Gn. 50:1079 

 R.H.18(i8:450. Mn.5,p.lOo. A.d. 11:415. A.F.10:1015. 

 l'\E.9:.52and 401. (ing. 5:161. Var. plena, Rgl. Similar 



^'^. 



1112. Hydrangea paniculata, var. erandiflora. 



1113. Hydrangea hortensis, var. Otaksa. 



tn var. Uortensia , but sepals toothed. Var. Thomas 

 Hogg, Hurt. Lvs. elliptic or ovate, ratlier small; heads 

 larffp, pTire white. This variety is somewhat dwarfer 

 tliau the common Hydrangea and is. hesiiles Otaksa, 

 the best as a pot-jihmt. It is also to be recommended 

 fur outdoor cultivation, as it is one of the hardiest. 



(M) Stillala group: [!.■<. irllli inmiu varrow sepah. 

 Var. stelUta, Maxim. {H. s/rfl.'ifff , Sieb. & Zucc). 

 Lvs. ovate or ovate-uldoug, sparingly pultrscent: cymes 

 with larger sterile and smaller fertile rts.,}>ofh with 

 many narrow-elliptic sepals. S.Z. 59. Var. fimbriMa, 

 Dipp. Cymes rather dense, with almost all the fls. 

 strrile: sepals tinibriate, white, pink toward the l)ase. 

 (KC. III. 2:{, suppl. 5::2S. Var. prolifera, Hnrt. (//. ,s/< ■^ 

 hi.fa, vur. proUf<.'r(f,HiX^.]. 'Die fertile Ms. bearing 1 nr 

 few smaller ones in the center. Var. rubro-pl^na, I)ip]). 

 Cymes rather dense, with almost all fls. .stirile, chang- 

 ing from pink or pale lilac to dark red. 



There are also some varieties with variegated lvs., as 

 var. variegata, Kegel, a form of var. J!r/,i<>}ii, with the 

 !vs. edged white (F.S. 7:69(1) ; var. tricolor, Hort., with 

 the Iv^ variH"-ated with white and edgr<l yellow; var. 

 roseo marginata, Hort., with the lvs. spotted white and 

 e l-,ed I nk 



Cijme e>ir]ose<l hi-fore expu ndiiig hi/ 'J-S 

 htrgr, ileciduous bracts. 

 '^ mvolucrata, Sieb. Low shrub, to '> ft.: 

 I 1 long, acuminate, densely and sharply ser- 

 i te nppressed, pubescent on both sides, rough 

 t tl e touch, 4-8 in. long: bracts at the base of 

 Tl -sme large, orbicular; smaller bracts none: 

 t it 1 tls. blue or pinkish, sterile ones whitish: 

 I lie with the calyx at the apex; styles usu- 

 dh 2 Aug. Jap. S.Z. 63. J. H. III. 32:103. 

 IJ S jpliire, introduced 1890 by Lovett, seems 

 t 1 p1 )ng here. Var. hortensis, Maxim. Fls. 

 1 il 1 , usuallv pink and often proliferous. 

 S 7 U. F.S. 3:187. 



vv CJhnhing hi/ aerial rooth'ts: sfmncns 10: 

 petalH cap-like, cohering, faUirig off as 

 I irliole. 



) petiolaris, Sieb. & Zucc. iU. scdyidmii^, 

 Maxim., not DC. R. ntlahiUs, Hort.). ("'limb- 



