

How to identify Wintergreen barberry (Berberis julianae)
Wintergreen barberry, also known as Julian's berberis
Wintergreen barberry is an evergreen shrub showcasing a robust, dense, and rounded form, which may become more open as it matures. Distinctive evergreen leaves present in clusters on short spur shoots, each leaf is leathery, uniformly deep green without variegation, and features sharply toothed margins. Characteristic of wintergreen barberry are its stems, each possessing three sharp spines at the nodes, lending the plant a medium to fine texture. This species exhibits noteworthy hardiness in cold climates and shows resilience against animal grazing and various soil conditions.
Leaves are leathery, deep green, toothed, clustered at nodes on short spur shoots.
Stem has 3 sharp spines at nodes, yellowish when young, thin branching pattern.
Yellow flowers in subumbellate raceme, star-like arrangement of petals.
Distinctive bluish-black oval berry, 0.3 inches (7.62 mm) in size, smooth texture.
Robust, rounded evergreen shrub, dense form with medium to fine texture.
Wintergreen barberry has alternate, simple leaves that are lustrous and dark green. Measuring 2-3 inches (5-7.5 cm) long, they display a spiny, serrated edge and transform to a wine-red color in fall. The leaves are narrow-elliptic to lanceolate or oblanceolate, clustered at nodes with 3-5 leaves per node. The texture is leathery with a uniform coloration on both surfaces. They are coriaceous and often appear in clusters on dwarf shoots from spine axils.
The flowers of wintergreen barberry are small and vivid yellow, appearing in spring. Each inflorescence forms a subumbellate raceme, usually comprising 2-5 flowers. These blossoms are borne on long pedicels, with individual flowers measuring about 0.4 inches (1 cm) across. The yellow petals are arranged in a star-like fashion, creating an eye-catching display during the blooming period. The flowers are not particularly noted for a strong fragrance but attract attention with their vibrant color.
The stem of wintergreen barberry is angular and yellowish when young, becoming yellow-gray or yellow-brown in the second year. It exhibits 3-parted spines along its length. The stem is relatively thin, around 0.2-0.4 inches (0.5-1 cm) in diameter, and showcases a branching pattern where the 3-parted spines develop. These sharp spines and color transitions are distinguishing characteristics.
The fruit of wintergreen barberry is a distinctive, oval-shaped berry that measures approximately 0.3 inches (7.62 mm) in size. It boasts a striking bluish-black hue that gives it a jewel-like appearance, making it visually appealing as it persists on the plant into the fall season. The surface of the berry has a moderately smooth texture, which can be both observed and felt when handling it. While the berry is primarily ornamental, it is a key characteristic for the identification of wintergreen barberry and adds to the aesthetic value of the plant during the later months of the year.
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Scientific Classification of Wintergreen barberry