28'6 The Ohio Naturalist. [Vol. V, No. 4, 



122. Low creeping shrubs with deHcate erect or ascending twigs. 



ASCYRUM. 

 122. Low erect shrubs; leaf scar close to the bark; fruit a capsule. 



HYPERICUM. 



122. Low erect shrubs; leaf scar on the prominent petiole base; fruit a 



berry. SYMPHORICARPOS. 



123. Terminal bud absent, the twig usually ending in a thorn. 



RHAMNUS. 



123. Terminal bud present; or if absent on some twigs then the end buds 



large, pointed, angular, and tisually green. 124. 



124. Twigs and buds glabrovis; buds ovoid-pointed, 4-angled, scales 



fleshy; fruit a capsule. SYRINGA. 

 124. Twigs very pubescent, buds less so; lateral buds rather fiat, more 



or less triangular; bud scales fieshv; leaf scar on the short petiole 



base; fruit a drupe. LIGUSTRUM. 

 124. Twigs and buds pubescent ; lateral buds cylindrical or hemispherical ; 



bud scales dry; leaf scar concave, on the short petiole base; lenti- 



cels large and conspicuovis; fruit a drupe. CHIONANTHUS. 

 124. Buds rough or pubescent; twigs glabrous or pubescent, sometimes 



4-angled; lateral buds somewhat flattened, obtuse; bud scales 



rather dry; leaf scar close to the bark; lenticels not large; fruit a 



samara. ' FRAXINUS. 

 125 "With a prominent pubescent ridge decurrent from the middle of 



the line connecting the leaf scars; low shrubs. DIERVILLA. 

 126. No pubescent decurrent ridge from the middle of the connecting 



line, but the ends of the leaf scars may be decurrent. 126. 

 126. Terminal bud with 2 long acuminate pubescent outer scales; line 



connecting the vippermost leaf scars notched. CORNUS. 



126. Terminal bud with several pairs of visible scales, or with 1 large 



pair and a small pair at the base, or the tips of the twigs with- 

 ering. 127. 



127. Trees or shrubs with numerous bundle scars, sometimes in 3 areas, 



in a large heart-shaped leaf scar; pith rather large; terminal bud 

 large, with numerous scales. ^SCULUS. 



127. Bundle scars 3 or sometimes 5. 128. 



128. Visible scales of the axillary buds 4 or more pairs, or if less, then 



the outer pair equalling the bud in length and the second pair 



hairy. 129. 

 128. Visible scales of the axillary buds 1-3 pairs, the outer short, or if 



equalling the bud then the second pair glabrous or glutinous. 



VIBURNUM. 

 12'.). Upper edge of the leaf scar strongly concave; usually large trees, if 



shrubs then the first pair of scales equaling the bud. ACER. 

 121). Upper edge of the leaf scar nearly straight; shrubs or climbing 



plants, the pith sometimes hollow, sometimes with hardened pith 



at the leaf nodes. LONICERA. 



