ADDISONIA 61 
(Plate 71) 
ROSA “SILVER MOON” 
‘¢ Silver Moon” Rose 
Garden Hybrid 
Family Rosackaz Rosg Family 
A vigorous bush with long climbing stems, glossy dark green 
foliage, and large white partially double flowers. The stems attain 
adnate to the leaf-rachis, have spreading acuminate free tips, and 
have the margins with stalked glands. The leaf-rachis, usually 
more or less tinged with red, bears a few spines, similar to those on 
the stem but smaller, and rather numerous stalked glands. The 
glabrous leaflets, which are commonly five, the lateral on stalks an 
eighth of an inch long or less, the terminal on a stalk much longer, 
are ovate to nearly orbicular, up to two inches long and an inch 
and three-quarters wide, and are abruptly short-acuminate; they 
are lustrous dark green above, paler beneath, the margins crenate- 
serrate with pointed teeth, usually fifteen to twenty-five on each 
side. ‘The flowers are borne in clusters of usually two to four, the 
stalks, which are tinged with red, with stalked glands. The sepals 
are ovate, acuminate into a long tip, the margins entire or rarely 
toothed or lobed, the outer surface on the margins and the entire 
inner surface hairy. ‘The buds are pointed and well-shaped, of a 
creamy yellow, opening into large flowers, sometimes five inches in 
diameter, of a pure white sometimes faintly tinged with yellow; 
the outer petals are broad and spreading, the inner smaller, undulate 
d incurved, partially concealing the central mass of bright yellow 
an 
stamens, the whole producing a flower of charming beauty. 
This rose was originated by Dr. W. Van Fleet, phsyiologist in 
the Bureau of Plant Industry, at Washington, D. C. In ere 
to an inquiry Dr. Van Fleet writes as follows: ‘“‘ The climbing 
rose Silver Moon was raised in 1906 from an unnamed hybrid of 
Rosa Wichuraiana X devoniensis pollinated with the Cherokee rose 
(R. laevigata). I have grown many seedlings of Wichwraiana (type) 
X Cherokee, but none turned out as hardy and showy as Silver 
Moon. ‘The influence of devoniensis, a large white-flowered and 
quite hardy form of Rosa odorata or Tea rose, appears to have been 
highly beneficial in the case of Silver Moon, though the direct 
cross of Wichuraiana and devoniensis has little merit as a garden 
plant, as it is a shy bloomer, but vigorous in growth and with good 
foliage.” Dr. Van Fleet adds that Silver Moon bloomed the 
second year from seed. 
