36 MASS. EXPERIMENT STATION BULLETIN 345 



Juniperus virginiana var. Schottii ScHOTT Red Cedar 



A form which grows into a rather small, formal, compact, bright green 

 column. It retains its color well throughout the winter and is reported to be 

 amenable to shearing when used as a hedge plant. 



Kalmia angustifolia LAMBKILL 



A straggling, small-leaved, reddish-flowered plant of hillsides and meadows 

 which can be massed on banks or in open, grassy areas along roadsides. There 

 are numerous forms based on color of June or July flowers or stature, such as 

 var. pumila which is dwarf enough for rock-garden use. 



KALMIA LATIFOLIA Mountain Laurel 



This broad-leaved, evergreen shrub with its varying white to pink flowers 

 is deservedly rated as one of the most beautiful, most popular, and most useful 

 of the native woody plants. A number of varieties based on flower color or 

 character have been described but are not generally available. The var. 

 MYRTI FOLIA, which may be had in limited quantities, is valuable because 

 of its smaller, darker leaves and slower habit of growth. 



Kalmia polifolia BOG KaLMIA 



A straggling, evergreen shrub which in cold northern bogs and mountains 

 gets up to two feet in height. Its small, persistent, slightly curled leaves are 

 white beneath. It bears rose-purple flowers in early summer. A plant which 

 finds limited use in wild gardening or, sometimes, in rock gardens. 



Kentucky Coffee-Tree — See Gymnocladus 



Kerria japonica KeRRIA 



A broad, loose, thin-wooded, green-stemmed, deciduous shrub which bears 

 a profuse crop of single yellow flowers in May or early June and occasionally 

 thereafter until frost. Winterkilling of tips prevents its becoming a tall plant. 

 The winter effect of its green stems makes it useful for mass planting. Var. 

 pleniflora, with double flowers, is more popular at the moment because of 

 greater vigor and more distinctly shrub-like aspect. 



koelreuteria paniculata Goldenrain Tree 



Usually seen in New England as a small, gawky, deciduous tree, or a very 

 large shrub. With its large compound leaves, summer-borne panicles of yellow 

 flowers, and papery fruits, it can be used at the back of the large border or 

 sometimes as an isolated plant. Like the Flowering Dogwood or the Haw- 

 thorns, it becomes easy prey for wood-boring insects if moved in large sizes. 



KOLKWITZIA AMABILIS Beauty-Bush 



A large, graceful, deciduous shrub, which, since its rather recent introduc- 

 tion, has rightly begun to displace some of the less hardy and less desirable 

 Diervillas or Deutzias. Its pendulous branches are covered in June with 

 clusters of pink flowers. In habit it is far less stiff and gardenesque than the 

 Weigelas. 



LABURNUM ALPINUM Scotch Laburnum 



This small, deciduous tree or large, stiff, upright shrub has been shown by 

 cultural experience to be the most satisfactory species for New England. It 

 has definite garden value when covered in late June with Wisteria-like racemes 

 of deep yellow, pea-shaped flowers. Laburnums do not respond kindly to 

 training by severe purning. 



Larch, Golden — See Pseudolarix 



