Red Osier Dogwood

The Red Osier Dogwood (Cornus sericea, syn. C. stolonifera, Swida sericea) is a species of dogwood native throughout northern and western North America from Alaska east to Newfoundland, south to Durango and Nuevo León in the west, and Illinois and Virginia in the east. Other names include Redtwig Dogwood, Red-rood, Red rood, American Dogwood, and (subsp. occidentalis) Western Dogwood. In the wild, it commonly grows in areas of damp soil, such as wetlands.

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It is a medium to tall deciduous shrub, growing 1.5-4 m tall and 3-5 m wide, spreading readily by underground stolons to form dense thickets. The branches and twigs are dark red, although wild plants may lack this coloration in shaded areas. The leaves are opposite, 5-12 cm long and 2.5-6 cm broad, with an ovate to oblong shape and an entire margin; they are dark green above and glaucous below; fall color is commonly bright red to purple. The flowers are small (5-10 mm diameter), dull white in color, in clusters 3-6 cm diameter. The fruit is a globose white berry 5-9 mm diameter.

Cornus sericea is a popular ornamental shrub that is often planted for the red coloring of its twigs in the dormant season.

It is a variable species, with two subspecies commonly accepted:

• Cornus sericea subsp. sericea - throughout the range of the species. Shoots and leaves hairless or finely pubescent; flower petals 2-3 mm.
• Cornus sericea subsp. occidentalis (Torr. & A.Gray) Fosberg - western North America. Shoots and leaves densely pubescent; flower petals 3-4.5 mm.

References

• Blanchan, Neltje (2005). Wild Flowers Worth Knowing. Project Gutenberg Literary Archive Foundation.