114 Spring Flora of Ohio. 



1. Genus SAM-BU'-CUS. — Calyx-lobes minute or obsolete; corolla 

 open urn-shaped, with a broadly spreading, o-cleft limb; shrubby 

 plants, with pinnate leaves and small, white flowers in compound 

 cymes. 



Sam-bu'-cus can-a-den'-sis L. Elder, — Leaflets oblong, the lower 

 often .'>-parted; cymes flat; fruit black-purple. 



Sam-bu'-cus pu'-bens Mx. {S. raceuiosa h.) Red-berried Elder. — Leaf- 

 lets ovate-lanceolate, downy underneath; cymes pauicled, convex or 

 pyramidal; fruit bright-red. 



'1. Genus VI-BUR'-NUM. — Calyx ")-toothed; corolla spreading, 

 deeply 5-lobed; flowers white, in flat, compound cymes; shrubs, 

 with simple leaves. 



A. Till' iiiai ghial Jiozufrs neutral, coro//as grt'a/ly enlarged and flat. 



Vl-bur'-num al-ni-fo'-li-um Marsh. (/'. lantanoides Mx.) Hobble- 

 bush. — Leaves 4-8 in. across, round-ovate, abruptl}- pointed, closely 

 serrate ; the veins and veinlets beneath and the stalks and branchlets 

 verv rustv-scurfy ; a straggling shrub. 



Vi-bur'-nutti op'-u-lus L. Cranberry-tree. — Nearly smooth, upright, 

 4-10 ft. high; leaves .S-o-ribbed, strongh' 3-lobed. The Snow-ball is a 

 cviltivated form of this species, the whole cyme consisting of sterile 

 flowers. 



A. .\'(^ i')ilari>i-d marginal flo7uers. 



b. Leaves H-ridfied, soniew/iat :\-lobed, st/fiitles hristle-sliaped. 



Vi-bur'-num a-cer-i-fo'-li-um L. Dockmackie: Arrow-wood. — Shrub 3-6 

 ft. high; leaves soft-downy 1:)eneath ; cymes small, slender-peduncled. 



1). I.ca-rcs Loarsclv tootlird, />hinalelv Tr/ned. stifinles narrorvlv subulate) 



Vi-bur'-num pu-bes'-cens (Ait.) Ph. Downy Arrow -wood. A low, 

 straggling shrub ; leaves ovate or oblong-ovate, the veins and teeth 

 fewer and less conspicuous than in the next, the lower surface, and 

 very short petioles soft-downy, at least when young. 



Vi-bur'-num den-ta'-tum L. Arrow-wood. — Smooth, 5-15 ft. high, bark 

 ash-colored ; leaves V)roadly ovate, very numerously sharp - toothed 

 and strongly veined. 



