366 TREES OF MINNESOTA. 



occasionally killed to the ground, but generally renew them- 

 selves by sprouts from the roots. The Catalpa is, however, 

 unfit for a street tree in Minnesota; but may often be used in 

 protected locations in parks and lawns, where it is valuable for 

 variety in foliage and for its beautiful flower clusters. It is of 

 remarkably rapid growth when young and has been used in 

 some of the most successful tree plantings that have been made 

 in Kansas and southern Iowa. The wood is used for railway 

 ties, fence posts and rails, and occasionally for furniture and 

 inside finish of houses. 



The Hardy or Western Catalpa was for a long time con- 

 founded with the Catalpa of the Eastern States (C. bignonioides) , 

 which is not nearly so hardy. 



CAPRIFOLIACEAK HONEYSUCKLE FAMILY. 



A family of a few hundred species, including such well-known 

 plants as the common Elder (Sambucus), the Snowberry (Sym- 

 phoricarpus) and the Honeysuckle (Lonicera). 



Genus VIBURNUM. 



Small trees or shrubs with simple opposite leaves. Flowers 

 perfect or neutral; calyx equally five-toothed, persistent; corolla 

 five-lobed; stamens five; ovary inferior, one-celled. Fruit a 

 dry or fleshy one-seeded drupe; seed flattened. This genus 

 includes the well-known Snowball, which is a sterile form of 

 the Highbush Cranberry (Viburnum opulus}. 



Viburnum lentago. Sheepberry. Black Haw. Nanny- 

 berry. 



Leaves ovate-acuminate, petioles usually winged. Flowers 

 perfect, in flat clusters from three to five inches across, slightly 

 fragrant, appearing the latter part of May or first of June in 

 this section; corolla cream-colored or nearly white, one-fourth 

 inch across when open; filament thick; stigma broad. Fruit 

 borne in drooping clusters, oval, about one-half inch long, 



