284 
The Ohio Naturalist. 
[Vol. V, No. 4, 
— 96 — 
9(). Terminal bud absent. 97. 
96. Terminal bud present. 101. 
97. Stipules or stipular scars absent or indistinct. 9S. 
97. Stipules or stipular scars present. 99. 
98. Leaf scar very narrow, ^llmost a line, not decurrent, extending half 
way around the stem; low shrubs or climbers. ROSA. 
98. Leaf scar broad; twigs not glandular dotted; erect shrubs or 
trees. PRUNUS. 
98. Leaf scar broad; young twigs glandular dotted; buds usually clus- 
tered at the tip. MYRICA. 
99 Twigs glandular, dark, pubescent; buds globular; low shrubs. 
COMPTONIA 
99. Twigs not glandular 100. 
1 00. Buds and twigs very downy, twigs dark brown or black. CYDON L\ 
100. Buds and twigs pubescent; twigs light or greenish brown. 
SORBARIA 
100. Buds downy or pubescent; twigs glabrous or pubescent, gray or 
brown. RHAMNUS. 
101. Twigs green or yellowish-green, glabrous; internodes very unequal; 
lateral buds minute; small trees. CORNL^S. 
101. Twigs normally red above and green beneath, glabrous; bark very 
bitter; some axils with 2 or 3 hairy buds of nearlv equal size; 
trees. AMYGUALUS. 
101. Twigs not green or red and green unless the plants are low shrubs, 
but gray, brown, black, or reddish. 102. 
102. Bundle scars 5 or more in the broad L'-shapcd leaf scar; tips of the 
buds quite downy; small trees. SORBUS. 
102. Bundle scars 3. 103. 
103. Leaf scars very narrow, often a mere line e.xtending half way or 
more around the stem, not decurrent; low shrubs. ROSA. 
103. Leaf scars rather broad often decurrent. 104. 
104. Leaf scars strongly decurrent at the sides and middle; bundle scars 
close together, the central one lai'ge; shrubs with brown twigs. 
OPUL ASTER. 
104. Leaf scars not decurrent or if so then the bundle scars distinctly 
separated. 105. 
105. Buds elliptic, lanceolate or lance-linear; shrubs. 106. 
105. Buds ovate or depressed; mostly trees or tree-like. 107. 
106. Older bark shreddy; leaf scars somewhat decurrent at the middle 
and sides; bud scales very thin, light or dark brown. RIBES. 
106. Bark close; buds pale brown or red; leaf scars not decurrent; bud 
scales rather thick; twigs pubescent. ARON I A. 
107. Buds rounded at the apex, often clustered at the tip of the twig; 
twigs glandular dotted. MYRICA. 
107. Buds rounded at the apex; scales thick; twigs often zigzag; plant 
usually with some thorns, not glandular dotted. CRATzEGUS. 
107. Buds pointed; plants sometimes with thorn-like stunted branches, 
not glandular dotted. 108. 
108. Buds glabrous or slightly pubescent; twigs usually glabrous and 
slender, some shade of black, brown, or reddish, often with 2 or 
3 axillary buds; some with self-pruning scars. PRUNUS. 
108. Buds downy or strongly pubescent, conical, pungent; twigs gla- 
brous, mostly yellow-olive; trees with erect growth, the branches 
not spreading as in most of the apples. PYRUS. 
108. Buds downy or strongly pubescent; twigs strongly pubescent or if 
glabrous then dark reddish-brown; trees with rounded or 
spreading crowns. MALUS. 
