160 MASS. EXPERIMENT STATION BULLETIN 267 



factory. Tlie variety is, in fact, quite attractive and well worth using in rea- 

 sonably large numbers in any considerable plantation. 



( ornus kousa, KorsA Dogwood. Thi.s Japanese species is of comparatively 

 recent introduction and is said to be more hardy than the native CorHu.s- ffor- 

 ida. Experience here thus far does not bear out such a statement. The oldest 

 plants, about ten years on the ground, have seemed to be less floriferous than 

 the native species. The flowers are soniewhat smaller but (juite attractive, and 

 the species is worth using in a collection, but could not be recommended as a 

 substitute in any way for the native Cornus florida. 



Cornus mas, Cor.NELiAN-ciiERRY. This old-world species has proved ))erfect- 

 ly hardy. Its very open crown and tendency to legginess do not conunend it 

 for general planting, though it may be used to advantage in the background 

 of a shrubbery. Its mass of small golden-yellow flowers, j^receding the leaves, 

 makes it a cheering harbinger of opening spring. 



Cornus panicuiata. Gray Dogwood. This is one of the hardy native roadside 

 species and while it has no conspicuous ornamental characters it is very satis- 

 factory for mass planting and much general landscape work. In fact it is 

 one of the most solidly useful shrubs for general park planting in the entire 

 genus. The clusters of white fruits on pink stems are attractive for a short 

 time and are greedily devoured by birds. 



Cornus stolonlfcrn, Red-osier Dogw'Ood. This hardy native sjiecies is most 

 frequently found in wet land beside ponds and water courses. It is a good 

 thrifty species quite satisfactory for j)]anting in moist situations. The bark 

 is bright and attractive in its winter condition. This sjiecies seems to be fre- 

 quently confused with others, e. g. C. albfi sibirico, C. alba, and even C. 

 amomum. 



Corylus amerirana, Amekicax Hazej.nt-t. A hardy native species found 

 along the woodland borders. A good, tiirifty }ilaiit for rough border plant- 

 ings but without any distinctive ornamental characters. 



Cori/Ius avellann. Filbert. The filbert, or European hazelnut, is sometimes 

 fovmd in nursery ct)'llections. It is a larger, stronger-growing ])lant than the 

 American species and more effective for general planting. Otlierw ise it has 

 no superiority. This species has a ])urj)le-leaved variety known a,^ Curnlus 

 aveUana afroiiurpurea, the Purple Fii.hert. It is one of those showy purple- 

 red leaved forms quite conspicuous in the si)ring season, but not to be recom- 

 mended for general use. 



Cratae(ius inonocfi/na, English Hawthorn. The English hawthorn is per- 

 fectly at home on our grounds and thrives consistently on any well-drained 

 soil. It is hardy and satisfactory. It blossoms well each spring. As a s])eci- 

 men jilant it is distinctly less attractive than many of the native species. In 

 I'.ngland the hawthorns, this species es])ecially, are famous for use in liedge- 

 rows. In America they seem to be less satisfactory as hedges than several 

 other species of other genera. 



Crataeijus oxijiicdnthd btcolor. Reukoi Hawthorn. One of the briglitly co- 

 lored varieties of the English hawthorn. Except for the flowers it has the 

 same characters as the parent sjiecies. 



Crataegus oxi/acantha pauli. Pavl English Hawthorn. Another variety of 

 the English species having little difference excejit in the flowers, which are 

 rosv red and fullv double. 



