Lycium cooperi
Encyclopedia
Lycium cooperi is a species of flowering plant in the nightshade family
Solanaceae
Solanaceae are a family of flowering plants that include a number of important agricultural crops as well as many toxic plants. The name of the family comes from the Latin Solanum "the nightshade plant", but the further etymology of that word is unclear...

 known by the common name peach thorn. It is native to the southwestern United States, where it grows in a variety of desert and mountain habitat types. This is a bushy, erect shrub
Shrub
A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...

 approaching a maximum height of 4 meters with many rigid, thorny branches. The branches are lined thickly with fleshy oval or widely lance-shaped leaves each 1 to 3 centimeters long and coated with glandular hairs. The inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...

 is a small cluster of tubular flowers roughly 1 to 2 centimeters long including the calyx of fleshy sepal
Sepal
A sepal is a part of the flower of angiosperms . Collectively the sepals form the calyx, which is the outermost whorl of parts that form a flower. Usually green, sepals have the typical function of protecting the petals when the flower is in bud...

s at the base. The flower is white or greenish with lavender or green veining. The corolla is a tube opening into a face with four or five lobes. The fruit is a yellow or orange berry
Berry
The botanical definition of a berry is a fleshy fruit produced from a single ovary. Grapes are an example. The berry is the most common type of fleshy fruit in which the entire ovary wall ripens into an edible pericarp. They may have one or more carpels with a thin covering and fleshy interiors....

under a centimeter wide containing many seeds.

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