Feb., 1905.] 
Key — Ohio Woody Plants. 
283 
78. Buds not clustered at the tip; bark sometimes aromatic, often very 
poisonous to the touch ; leaf scar in some species surrounding the 
axillary bud in others only partly surrounding the bud or the 
bud covered; small trees or shrubs or woody vines climbing by 
numerous rootlets. RHUS. 
79. Leaf scars surrounding the hairy sunken axillary buds; terminal 
bud self-pruned and thus the twigs with peculiar rings. DIRCA. 
79. Leaf scars not surrounding the axillary buds and twigs not with 
peculiar rings. 80. 
80. Base of petiole and stipules persisting, prominent, drying off; small 
shrubs. 81. 
80. Petiole deciduous close to the brak, leaving a definite leaf scar. 82. 
81. Bundle scars 3; pith large; bark not shreddy. RLTBUS. 
81. Bundle scar 1; pith small; stipules sheathing the stem; bark dark 
brown, shreddy. DASIPHORA. 
— 82 — 
82. Bundle scar 1, or if several then closely crowded and confluent, 
appearing as 1. 83. 
82. Bundle scars 3 or more, distinct. 96. 
83. Climbing vines, the stems herbaceous above; young twigs gray 
pubescent. SOLANUM. 
83. Stem climbing, woodv throughout; bark light grav; buds often 
clustered. LYCIUM. 
83. Stem not climbing, woody throughout. 84. 
84. Stipular scars or stipules present. 85. 
84. No stipular scars or stipules. 87. 
85. Terminal bud present. 86. 
85. Terminal bud absent; bud scales dark brown or black. RHAMNUS. 
86. Stipules deciduous; low shrubs. CEANOTHUS. 
86. Stipules usually persistent, minute; erect shrubs. ILEX. 
87. Terminal bud present. 88. 
87. Terminal bud absent. 91. 
88. Bark of twigs verv spicv-aromatic, green; internodes verv unequal. 
SASSAFRAS. 
88. Bark not spicy-aromatic. 89. 
89. Internodes very unequal; bark brown or gray. AZALEA. 
89. Internodes not very unequal. 90. 
90. Twigs glabrous, gray or blackish-brown. ILICIOIDES. 
90. Twigs pubescent or tomentose, reddish or light-brown. SPIRAEA. 
91. Trees with polished, greenish-brown, grayish-yellow, or red twigs; 
bark sour; leaf scar prominent, semi-oval, with a dark central 
scar usually in the form of a ring; buds small, not projecting 
much beyond the epidermis; the large terminal panicled raceme 
with capsules persisting all winter. OXYDENDRUM. 
91. Trees with brown pubescent twigs; or shrubs. 92. 
92. Trees with 2 visible scales in the triangular flattened bud; pith 
often with lenticular cavities; twigs pubescent, zigzag at the 
tip. DIOSPYROS. 
92. Low shrubs with several visible scales in the bud. 93. 
93. Twigs finelv white-speckled and granulated, green or reddish. 
VACCINIUM. 
93. Twigs not white-speckled. 94. 
94. Buds of two kinds, large flower buds with many visible scales and 
small ones with 2 outer scales. GAYLUSSACIA. 
94. Buds all alike, with several scales. 95. 
95. Surface of leaf scar rather even; self-pruning scars present; twigs 
reddish-olive. POLYCODIUM. 
Surface of leaf scar very uneven; no self-pruning scars; bud scales 
numerous. SPIRAJA. 
95 . 
