April, 1914.] The Honeymdde Family in Ohio. 301 



3. Outer flowers of the cyme large and flat. V. alnifolium. 



3. Outer flowers not enlarged. 4. 



4. Leaves coarsely dentate. 5. 



4. Leaves serrate or denticulate. 7. 



5. Leaves sessile or the petioles not exceeding 3^ inch; oval to ovate, 



acuminate, pubescent; stipules long, slender, prominent. 



V. pubescens. 



5. Leaves with petioles 3^ to I3/2 inches long, broadly oval, obtuse to long 



acute. 6. 



6. Leaves pubescent beneath, more or less stellate; cyme pubescent. 



V. scabrellum. 



6. Leaves glabrous beneath sometimes with tufts of hair in the a.xils; cyme- 



glabrous or nearly so. V. dentatum. 



7. Leaves very pubescent, denticulate, cyme stalked. V. lantana. 



7. Leaves glabrous or nearly so, serrate or crenulate. 8. 



8. Leaves ovate-lanceolate, usually crenulate; petioles rather stout; 



peduncles about the length of the cyme or shorter. V. cassinoides. 



8. Leaves ovate or broadly oval, margin serrate; petioles slender; cyme 



sessile or nearly so. 9. 



9. Leaves long-acuminate; petioles often wavy margined. V. lentago. 

 9. Leaves obtuse or sometimes acute, oval; petioles rarely margined. 



V. prunifolium. 



1. Viburnum pubescens (Ait) Prush. Downy Arrow-wood. 

 A shrub IS to 46 feet high with straight gray branches; leaves 

 ovate or obovate, acute or acuminate, rounded or scinewhat 

 cordate at the base, sessile or short petioled, margin dentate, 

 upper surface sparsely pubescent, under surface velvety pubescent, 

 1| to 2| inches long, f to 1| inches broad; cyme peduncled, 1| to 

 2| inches broad, all flowers bisporangiate; fruit an oval drupe 

 about 2^ inches long; stone somewhat 2-grooved on both sides. In 

 rocky woods. Lorain, Erie, Wyandot, Auglaize, Wilhams. 



2. Viburnum dentatum L. Toothed Arrow-wood. A shntb 

 about 15 feet high with glabrous branches; leaves 1^ to 4f inches 

 long, 1 to 3 inches wide, ovate to broad ovate or orbicular, base 

 rounded or somewhat cordate, acute or short acuminate, petioles 

 ^ to 1^ inches long, veins prominent, margin coarsely dentate, 

 both surfaces glabrous except a slight pubescence in the axils on 

 the under surface; cymes with long peduncles, 2 to 3 inches broad. 

 In moist soil. Ashtabula, Geauga, Lorain, Summit, vStark, 

 Wayne, Ashland, Tuscarawas. 



3. Viburnum scabrellum (T & G) Chapm. Roughleaf 

 Arrow-wood. A shrub with inore or less densely tomentose 

 twigs; leaves 1| to 5 inches long; | to 3f inches broad, usually 

 tomentose on both sides, crenate or dentate; petioles short and 

 stout; fruit an ovoid, globose, blue drupe. Along river banks 

 and in moist woods. Adams, Brown. Hocking, Madison. 



4. Viburnum cassinoides L. Withe-rod. A shrub 2 to 12 

 feet high with ascending branches, more or less gray, often scurfy 

 or glabrate; leaves ovate to obovate, thick, base often narrowed 

 but sometimes rounded, apex acute, margin crenulate, f to 3j 



