Japanese silverberry, umbellate oleaster, autumn olive (アキグミ) #5479

photo by Nemo's great uncle on Flickr

Japanese silverberry, umbellate oleaster, autumn olive (アキグミ) #5479 — Fotopedia
アキグミ[秋茱萸](akigumi) = "Japanese silverberry, umbellate oleaster, autumn olive" (Elaeagnus umbellata)
On US invasive species list

Wikipedia Article
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Elaeagnus umbellata

Elaeagnus umbellata, is known as Japanese silverberry, umbellata oleaster, autumn olive, autumn elaeagnus, or spreading oleaster. The species is indigenous to eastern Asia and ranges from the Himalayas eastwards to Japan. Because it fixes atmospheric nitrogen in its roots, it often grows vigorously and competitively in infertile soils.

Elaeagnus umbellata grows as a deciduous shrub or small tree, typically up to 3.5 m tall, with a dense crown. It commonly bears sharp thorns in the form of spur branches. The leaves are alternate, 4–10 cm long and 2–4 cm wide, entire, but with wavy margins. The leaves are covered with minute silvery scales when they emerge early in spring, but turn greener above as the scales wear off during the summer. In this the plant differs from the related E. angustifolia, which remains silvery until it sheds its leaves in the fall.

The flowers are borne in the leaf axils in clusters of 1-7. They are pale yellowish-white, fragrant, and have a four-lobed corolla 1 cm long. The fruit is a small round drupe 1/4 to 1/3 inches (0.65 to 0.85 cm) in diameter. The unripe fruit is silvery-scaled and yellow. It ripens to red, dotted with silver or brown.

When ripe, the fruit is juicy and edible, and also makes a good dried fruit. Though the fruit are small, the tree bears them abundantly. They are tart-tasting, with chewable seeds. Their content of the antioxidant lycopene is some seven to seventeen times higher than that of tomatoes.

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Elaeagnus umbellata Triangle