£22 JOURNAL OF THE ARNOLD ARBORETUM [vol. hi 



The hybrid shows the influence of C. ovatus in the glabrous branchlets, 

 the glabrous or nearly glabrous leaves and in their more oblong or elliptic 

 not strictly ovate shape, while the blue color of the flowers must have 

 come either from C. coeruleus or its hybrid with C. americanus, C. Delilia- 

 nus. The scantiness or absence of pubescence and the rather large leaves 

 with a tendency toward an ovate shape make it more likely that C. 

 Delilianus is the other parent, for a cross with typical C. coeruleus would 

 have produced a more pubescent plant with smaller distinctly oblong to 

 elliptic leaves and a smaller inflorescence. The cross between C. coeruleus 



and C. ovatus may be represented by C. Baumannii Spach (Hist. Veg. 

 II. 460 (1834) ) of which I have seen no specimens. 



X Ceanothus pallidus var. roseus, comb. nov. — C. Fontanesianus roseus 

 Spach, Hist. Vcg. n. 460 (1834). — C. ovatus roseus Carriere in Rev. Hort. 

 1S75. 30, tab, — C. azureus var. roseus Lavallee, Arb. Segrez. 51 (1877). 

 C. roseus hort. (? C. americanus X thyrsiflorus) apud Koehne, Deutsch. 

 Dendr. 395 (1893).— Schneider, in. Handb. Laubholzk. n. 294 (1909).— 

 C. hybridus roseus Rehder in Bailey, Cycl. Am. Hort. i. 265 (1900). — 

 C. hybrid us Hort. ex parte, ex Schneider, I. c. (1909). 



This plant as well as C. pallidus was raised by Baumann from seed of 

 C. ovatus and is apparently of the same origin; in habit, pubescence and 

 shape of leaves there is little or no difference and the variation in color is 

 not an unusually occurrence, as blue, violet and lilac flowers often produce 

 forms with pink, or rose-colored or even red flowers. To this hybrid 

 belongs the form known as "Marie Simon" with flesh-colored flowers. 



X Ceanothus pallidus var. plenus, comb. nov. — C. flore albo pleno Jouin 



in Rev. Hort. 1891, 110. — C. americanus var. flore albo pleno Grosdemange 



in Rev. Hort. 1893, 475. — C. azureus f. flore albo pleno Voss, Vilmorin's 



Blumengart. I. 179 (1894). — C. hybridus "Albus plenus" Rehder in Bailey, 



Cycl. Am. Hort. I. 265 (1900). — C. albus plenus Anon, in Gard. lxxvii. 

 432, fig. (1913). 



This form is similar in habit, pubescence and shape of leaves to the 

 preceding variety, but has double white flowers, pink in bud. Its origin 

 is unknown to me, but it possibly originated before 1890 with Simon- 

 Louis of Plantieres near Metz, who raised many other hybrids of Ceanot hus. 



Vitis Thunbergii Sieb. & Zucc. var. sinuata, comb. nov. — V. Labrusca 



(x-typiea d. sinuata Regel in Gartenfl. xxn. 204, t. 765, p. 1, (1873), — Vitis 



Thunbergii $ partita Makino in Jour. Jap. Bot. i. 32 (1918). — V. ficifolia 



var. Thunbergii Nakai, Fl. Sylv. Kor. xn. 19, tab. 5 (1922), in part. 



Japan: Buxen prov., K. Sakurai, August 17, 1910. Korea. Quelpaert Island, 

 common around Saishu on volcanic rocks, E. H. Wilson. No. 9371, October 28, 

 1917. 



Cultivated specimens: Arnold Arboretum, September 7, 1921 (raised from 

 seed of Wilson's No. 9371). 



This variety differs from the type in the smaller, more deeply and 

 usually 5-lobed leaves, with short and broad obtusish or rounded lobes 



