138 SOUTH DAKOTA AGRICULTURAL COLLEGE 



low moist land the basswood or linn makes an excellent street 

 tree. Towns lying on river banks will find this species desira- 

 able as affording an agreeable variety in form and foliage. The 

 black wild cherry is not as useful for the street as for lawn plant- 

 ing. It is apt, when standing alone, to grow crooked, and street 

 trees should have straight clean trunks, The ash, though often 

 used in street planting, is one of the least desirable species for the 

 purpose. When planted in grass as most street trees are, it grows 

 very slowly, its shade is light, and trees of a good size for street 

 use do not bear transplanting as well as elm or box elder. 



LAWN TREKS. 



For lawn planting the range of choice is much greater than 

 for street use. In addition to the species suitable for street plant- 

 ing, the ash, hackberry, white birch, cut leaved birch, Russian 

 silver poplar, laurel leaved willow, buffalo berry, (Shcpherdia 

 argentia,} wild plum, wild and cultivated crabapple, hawthorn, 

 and the wild cherries, all can be grown in any part of Dakota 

 where a sufficient water supply is to be had. No trees do so well 

 planted in grass as in cultivated land, and this is especially true 

 iti dry regions. Hence the slower growing trees and the species 

 named in this paragraph particularly will be profited by occasion- 

 al thorough watering when set in the lawn. All the trees men- 

 tioned are native except the birches, Russian silver poplar, lau- 

 rel leaved willow, wild crabapple, and the Siberian crabapple, 

 the last being a well known fruit tree. The wild crabapple is a 

 native of eastern Minnesota, and is hardy in the vicinity of Brook- 

 ings. It has pink colored fragrant blossoms and in blooming 

 time is a very ornamental tree. In size it is but little larger than 

 the wild plum. Several silver poplars were imported from Rus- 

 sia by the Iowa Agricultural College. Of these the most orna- 

 mental is Populus bolcana, which has deep lobed-ieaves, the under 

 side being clear white and the upper side dark, rich green. The 

 tree is erect in habit and is a valuable addition to the list of orna- 

 mentals. It is not quite so much damaged by the cottonwoocl 

 leaf beetle as are others of the genus. The laurel-leaved willow 

 is also a Russian. It is a tree of small size, compact, rounded 



