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Other names and notes

Trees and Shrubs of the Eloise Butler Wildflower Garden

Common
Name

Scientific
Name

Plant
Family

Garden
Location

Flowering
Season

Pagoda Dogwood
Cornus alternifolia L. f.
Dogwood (Cornaceae)
Woodland
Late Spring to Early Summer

(Alternate-leaf Dogwood) A native deciduous shrub with alternate leaves that are however, mostly clustered at the ends of branches. It usually forms a small tree up to 30' in height, with the smooth greenish color branches growing almost horizontal, which gives it the common name of Pagoda Dogwood as these horizontal branches are tiered into decreasing widths near the top resembling a pagoda. It is the only native dogwood that will form a tree shape. Twigs are reddish in color with terminal buds not much wider than the twig. Buds are reddish also with 2 to 3 scales visible. The flower buds break from the bud at the same time as the leaf as shown below. Bark on smaller stems is smooth and darker green. Large older stems will turn brownish with fissures. Leaves are broadly oval, entire (toothless) have a rounded base with a tapering tip, glossy green on top, up to 4 inches long. Very fine hair on the leaf petiole. Leaf veins are prominent and curve up toward the leaf tip (arcuate). The flowers are white, 4 part, in flat-topped branched clusters (cymes), each cluster from 2 to 4" wide. The fruit is an globular drupe containing an ovoid shape stone. Fruit turns dark blue in late summer attached to a stalk that turns reddish.

Comparisons: There are four Dogwoods in the Garden. All have similar looking flowers. An identification key with comparison link is presented below these photos. Names: The genus, Cornus, is from the Latin cormu which refers to a 'horn'. Most references believe that name was applied as a reference to the density of the wood of this genus, which also includes the boxwoods. Dogwood is very dense and was once used for loom shuttles. The species name, alternifolia, refers to the alternate leaves. Comparisons: There are four Dogwoods in the Garden. All have similar looking flowers. An identification key is presented below the photos.

Pagoda Dogwood Flower
Pagoda Dogwood
Above left: Flower cluster with leaf cluster at end of the branch. Above right: Detail of the 4-part flowers.
Below left: Early season green fruit just 6 weeks after the buds breaking. Below right: The dark blue fruit of early August.
Pagoda Dogwood green fruit
Pagoda Dogwood Fruit
Below: Large older specimens of Pagoda Dogwood can be quite impressive with multiple flower clusters on many new branches. A tree like that shown achieves great size and the typical "pagoda" shape when not crowded by other plants and gets full sun most of the day. Understory specimens usually remain as shrubs.
Pagoda Dogwood
Below left and center: Twigs are reddish color. Note that the flower buds appear with the developing leaves. Below: Younger stems have a dark greenish color with vertical streaks which become fissures as the stem grows older and thicker.
Pagoda Dogwood Twig Pagoda Dogwood early leaf Pagoda dogwood stem
Pagoda Dogwood twig terminal bud Left and Right: Two views of terminal buds. Note the fine hair on the scale edges in the right photo and the 3 scales. Pagoda Dogwood Terminal bud
 
Dogwood Species C. racemosa C. obliqua C. alternifolia C. sericea
Common Name Gray Dogwood Pale Dogwood Pagoda Dogwood Red Osier Dogwood
Alternate Name Panicled Dogwood Silky Dogwood Alternate-leaf Dogwood  
Height & Size to 6' forming a thicket 3 to10'shrub to 30' small tree to 9' in thickets
Flowers All four dogwoods have small 4-part white flowers that are borne in branching clusters.
Flower cluster nearly as high as wide and NOT flat topped Flat-topped, flower stalks silky (hairy) Flat-topped, mostly at the ends of branches Flat-topped
Bloom period (typical - varies with season) mid- to late June late May to June Late May to mid-June Early May onwards.
Leaves Opposite, entire, stalked, oval to lance shape, pale under, veins curve to tip. Opposite, entire, stalked, ovate to oval shape, taper at both ends, pale under Alternate, entire, stalked, broadly oval, rounded base, taper at tip. Glossy green above, form clusters at end of branches Opposite, entire, stalked, oval to lance shaped, 5 to 7 pairs of veins, whitish under.
Branches Gray, smooth Purplish Greenish, smooth. Twigs red. Younger branches reddish in fall, winter and spring
Fruit White with conspicuous red stalks dark blue dark blue white to lead
Native Status Native Native Native Native
 
Notes: This plant is indigenous to the Garden area. Eloise Butler catalogued it on April 29, 1907. Additional plantings were made by Gardener Cary George in 1987. It is native to Minnesota and fairly well distributed except for counties in the SW quadrant and the Arrowhead. Its' North American range is the eastern half of the continent. It is frequently grown as a garden specimen and is readily available in the nursery trade.  
 

 
References: Plant characteristics are generally from sources 32, W2, W3, W7 & W8 plus others as specifically applies. Distribution principally from Wi, W2 and 28C. Planting history generally from 1, 4 & 4a. Other sources by specific reference. See Reference List for details.  
©2013 Friends of the Wild Flower Garden, Inc. All photos are the property of The Friends of the Wild Flower Garden unless otherwise credited. "www.friendsofthewildflowergarden.org" 042613