300 The Ohio Naturalist. [Vol. XIV, No. 6, 



Sambucus L. Elderberry. 



Shrubs or small trees with opposite pinnate leaves often with 

 stipules and stiples; leaflets serrate, acuminate; flowers white or 

 pinkish -white, actinomorphic, bisporangiate ; trimerous to pen- 

 tamerous, corolla rotate or campanulate; calyx tube ovoid or 

 turbinate; stamens five united with the base of the corolla, fila- 

 ments slender, anthers long; inflorescence a compound or depressed 

 cyme; ovulary tri-locular to quinque-locular; ovules one in each 

 cavity, pendulous; fruit a berry-like drupe containing 3 to 5 one- 

 seeded nutlets; embryo long. 



Key to the Species. 



1. Leaflets glabrous above, sometimes pubescent beneath, 5 to 11, ovate 

 or oval; pith large, white; cyme convex. 5. canadensis. 



1. Leaflets and twigs commonly pubescent, 5 to 7; pith in the young 

 branches a reddish brown; inflorescence a coinpact panniculate cyme. 



5. racemosa. 



1. Sambucus canadensis L. Common Elderberry. A shrub 

 2 to 13 feet high; stem often but slightly woody, containing a 

 large soft white pith when young; leaflets 5 to 11 ; ovate to obovate, 

 acuminate or acute, short petioled, glabrous above more or less 

 pubescent along the mid-rib beneath, 2 to 5 inches long, f to 2 

 inches broad, serrate; cymes broad, flat convex; flowers white 

 |- to I inches broad; drupe | inch in diameter, purplish black; 

 nutlets roughened. In moist soil. General. 



2. Sambucus racemosa L. Red Elderberry. A shrub 2 to 

 13 feet high; twigs and leaves more or less pubescent; stems woody 

 with a reddish brown pith; leaflets 5 to 7; ovate to oblanceolate, 

 acuminate, inequalateral, 1 j to 5 inches long, | to 1| inches broad, 

 sharply serrate; cymes elongated, flowers white turning brown; 

 drupe red, f to | inch in diameter; nutlets slightly roughened. In 

 rocky places. General. 



Viburnum L. 



Shrub or trees with entire or lobed simple, sometimes stipulate 

 leaves; flowers white or sometimes slightly pink, actinomorphic; 

 corolla rotate or campanulate; calyx tube ovoid or turbinate; 

 stamens five, anthers long cxserted; inflorescence a compound 

 cyme; outer flowers sometimes radiant and sterile; ovulary 1-3 

 -locular; style short; three cleft; fruit an ovoid drupe, sometimes 

 flattened, one seeded; seed compressed; embryo minute. 



Key to the Species. 

 1. Leaves palmatcly veined, 3-lobed, the two lateral veins prominent. 2. 



1. Leaves pinnately veined, not 3-lobed, lateral veins 5-11. 3. 



2. Leaves glabrous al)ovc, i)ul)esccnt along the veins beneath; outer flowers 



of the cyme enlarged and flat. V. opuitis. 

 2. Leaves more or less pubescent on both sides; cymes not radiant. 



V. acerijolium. 



