61 
In the later manuals (Gray and Britton and Brown) fio varieties 
of Hydrangea arborescens L. are recognized. In both the sixth and 
seventh editions of Gray’s Manual reference is made in the des- 
eription of H. arborescens LL. to the rare occurrance of radiant 
flowers thus: “flowers often all fertile, rarely all radiant, like 
the Garden Hydrangea.” In the seventh edition the expression, 
“like the Garden Hydrangea”, is omitted. 
In Britton and Brown’s Illustrated Flora (2nd edition) we find: ‘“‘marg- 
inal sterile flowers usually few or none, but sometimes numerous, or form- 
ing the entire inflorescence.” 
In Bailey’s Encyclopedia of Horticulture (Vol. 3, p. 1622, 1915.) three 
varieties of H. arborescens are listed as follows: ‘Var. cordata, Torr. and 
Gray, has the leaves broadly ovate and cordate. Var. sterilis, Torr. and 
Gray. <A form with all the flowers sterile, sepals broadly oval, rounded or 
mucronate at the apex; leaves oval to oblong ovate, rounded or abruptly 
contracted at the base. It is doubtful whether this form is still in cultiva- 
tion. Var. grandiflora, Rehd. <A form of variety cordata with all the flow- 
ers sterile: heads 5-7 inches across; flowers *4-inch across with ovate acute 
sepals; leaves ovate to ovate-elliptic ; cordate or rounded at the base.” 
From the foregoing it is clear that Bailey regards var. grandiflora Rehdex 
as a form of var. cordata Torr. and Gray, and expresses doubt as to whether 
var. sterilis Torr. and Gray is still in cultivation. He does not state when 
and where this variety had been in cultivation, nor are we told how var. 
grandiflora originated from var. cordata. Torrey and Gray (1. ¢. p. 591.) 
make no reference to the flowers being even occasionally all sterile in var. 
cordata. 
The following remarks pertain to the wild specimens in the woods and to 
those transplanted to the lawn as stated in the foregoing, and not to plants 
propagated from those and subjected to cultivation. The native plants of 
H,. arborescens L. growing in this vicinity agree with the descriptions in the 
manuals with the exceptions of the leaves. In Gray’s manual the leaves 
are described as ovate, rarely heartshaped, while Britton and Brown refer 
to them as rounded, cordate, or rarely broadly cuneate at the base. In 
Torrey and Gray, the leaves are ovate or cordate, mostly acuminate, ser- 
rately toothed, puberulent or nearly glabrous. 
In the plants observed by myself the leaves were generally heartshaped, 
although there may be a wide variation in different plants and upon differ- 
ent stems of the same clump. These gradations range from a broad, deeply 
cordate, truncate, to rounded and narrowly tapering bases. The smaller 
leaves near the inflorescence are frequently narrow with narrow tapering 
bases. 
Variety sterilis possesses the same stem and leaf characters as the fertile 
species. The flowers, however, are all radiant, snowy-white, from 114-3 
cm. in diameter, very much larger in cultivated specimens; sepals broadly 
oval, rounded or obovate, somewhat pointed or rounded at the apex, but not 
mucronate; in most of the flowers stamens and pistil present, the latter 
