NOTES ON PLUM CULTURE. 
45 
ROCKFORD. (Prunus Americana.) 
Our trees planted in 1894 are still rather small, but 
thrifty in appearance, forming round regular tops. Leaves 
large, coarsely and deeply serrate, short acuminate; stalks 
dark red, pubescent, mostly glandless. Fruit of medium 
size, oblong, somewhat pointed, broad at base; color dark 
red on green ground; skin thin; suture inconspicuous; flesh 
firm, very acid until quite ripe, then of good quality; stone 
cling, broad at stem end and tapering to a rather acute,, 
thick apex, sides strongly convex, margin narrow, but sharp,. 
Productive, early; ripe August 31. 
ROLLINGSTONE. (Primus Americana.) 
Trees typical of the species, well-formed and of fair- 
vigor. Leaves large, broad, irregularly crenate; color dark 
green, stalks mostly glandless. Fruit large, round, flattened 
at both ends; deep red shading to pink on yellow ground; 
stem of medium length, skin thick; flesh firm, good; stone 
cling, broad oval, sides convex, margins sharp, smooth. 
Season medium, ripe September 12. 
RUSSIAN No. 2. {Prunus domestica) 
Trees forming roundish heads, and making less growth 
than other varieties of the same class. Leaves of medium 
size, broad, dull green, evenly crenate; stalks short, gland¬ 
less. Fruit of medium size, inclined to be irregular in shape, 
often more or less constricted at stem end, and sometimes 
flattened at distal end; suture apparent, more deeply colored 
than surrounding parts; color deep purple, with heavy blue 
bloom, stem sout, of medium length; flesh firm, sub-acid; 
quality only fair; stone free. Season early, ripe August 15, 
SPEER. (Prunus Americana ) 
Small, but vigorous trees of spreading habit, produc¬ 
ing long, slender branches. Leaves large, broad, acumin¬ 
ate, deeply and sharply serrate, dark green; stalk red, nearly 
glabrous, usually bearing small glands. Fruit medium in 
size, round-oblong, often contracted about the stem; suture 
evident; color purple-red on yellow ground; stem short, 
slender; skin thick; flesh firm and of good quality; stone 
cling, short-oblong, rather flat, ends blunt. Season medium, 
ripe September 17. Very productive. 
