1923] WILSON, THE HORTENSIAS 245 



A form with flowers of various colors is : 



Hydrangea serrata f. rosalba Wilson, n 



Hydrangea japonica Siebold & Zuccarini, Fl. Jap. I. 106 (1840), in part. 



Lindley in Bot. Reg. xxx. t. 61 (1844).— Paxton, Mag. Bot. xn. 199, t. 



(1846).— Bean, Trees & Shrubs Brit. Isl. i. 626 (1914). 

 Hydrangea japonica rosalba Van Houtte in Fl. ties Serr. xvi. 75, tt. 1649-50 



(1865-66).— Carriere in Rev. Hort. 1866, 432, t.— Regel in Gartenfl. xv. 



290 (1866). 

 Hydrangea japonica £. Lindleyi Regel in Gartenfl. xv. 289 (1866). 

 Hydrangea opuloides a. roseo-alba Dippel, Handb. Laubholzk. in. 324 (1893). 

 Hydrangea Hortensis var. Lindleyana Nicholson in Garden, xlvi. 466 (1894). 

 Hydrangea Lindleyana Nicholson in Garden, xlvi. t. 990 (1894). 

 Hydrangea hortensis var. rosalba Rehder in Bailey, Cycl. Am. Hort. n. 785 



(1900). 

 Hydrangea opuloides var. Lindleyana Rehder in Bailey, Stand. Cycl. Hort. 



hi. 1621 (1915). 

 Hydrangea opuloides var. rosalba Rehder in Mitt. Deutsch. Dendr. Ges. xxiv. 



220 (1915). 



516-1 



2210-1, 2442, 2444); Hort. Bot. Gard. Wash 

 Hort. Kew, G. Nicholson, Nos. 1777, 1784. 17£ 

 Kiel. B. G 



Miyabe 



Japan; Hort. Sakurai, K. Sakurai, May 12, 1906; 



In this form the leaves are somewhat pubescent on the underside and 

 on the upper surface of the midrib especially at the base, and vary in 

 shape from obovate to ovate-elliptic. The sterile ray-flowers may be 

 white or pink or in fading may change from one color to the other. The 

 petaloid sepals may be deeply or sparingly toothed, or they may be entire. 

 It is a variable and very common form and is often cultivated under the 

 erroneous name of H. japonica. There are also very many garden forms 

 of this plant; indeed, most of them which have been raised in France and 

 have dull green leaves have been derived from it; such is H. "Imperatrice 

 Eugenie" Carriere in Rev. Hort. 1868, 469, t. 



A form with numerous sterile flowers is: 

 Hydrangea serrata var. stellata Wilson, n. comb. 



Hydrangea Sitsitan Siebold in Nov. Act. Acad. Leop.-Carol. xiv. pt. 2, 692 



(Syn. Hydrang.) (1829).— De Candolle, Prodr. iv. 666 (1830). 

 Hydrangea stellata Siebold & Zuccarini, Fl. Jap. i. 112, t. 59 (1840).— Regel in 



Gartenfl. xv. 291 (1866).— Bean, Trees & Shrubs Brit. Isl. i. 626 (1914). 

 Hydrangea stellata j3. prolifera Regel in Gartenfl. xv. 291, t. 521 (1866). 



Nicholson, Diet. Gard. n. 163 (1887). 

 Hydrangea Hortensia Y). stellata Maximowicz in M6m. Acad. Sci. St. P6tersb., 



s£r. 7, x. no. xvi. 14 (Rev. Hydrang. As. Or.) (1867).— Hemsley in Garden 



x. 266 (1876). 

 Hydrangea Hortensis 3. stellata Franchet & Savatier, Enum. PI. Jap. I. 152 



(1875). 

 Hydrangea opuloides h. stellata Dippel, Handb. Laubholzk. in. 324 (1893). — 

 Schneider, 111. Handb. Laubholzk. I. 392 (1905).— Matsumura, Ind. PL 

 Jap. ii. pt. 2, 180 (1912).— Rehder in Bailey Stand. Cycl. Hort. in. 1622 



(1915). 

 Hydrangea opuloides var. prolifera Rehder in Bailey, Stand. Cycl. Hort. ill. 



1622 (1915). 



This is a sterile form with numerous petaloid sepals, pink rose or white 

 in color and ovate to lanceolate in shape. Siebold records it as cultivated 



