The botanical forma Celtis jessoensis f. angustibolia represents a naturally occurring morphological variant of the well-known Japanese hackberry. Found within the native range of the parent species, this specific form is distinguished by variations in leaf structure, typically characterized by narrower foliage compared to the standard type. Taxonomically, it falls under the Cannabaceae family, showcasing the typical resilience associated with the Celtis genus.
As a form of C. jessoensis, this deciduous tree shares the overall structural framework of the species, including a grayish, somewhat smooth bark that may develop corky ridges with age. The defining feature of this forma lies in its leaves, which are noticeably narrower than the typical ovate leaves of the species. The foliage retains the characteristic serrated margins and asymmetrical base common to hackberries. It produces small, inconspicuous green flowers followed by globose drupes that transition from green to dark purple or blackish upon maturity.
Spring
While not commonly cultivated as a standalone ornamental plant, specimens of this form occasionally appear in botanical gardens and arboreta focused on the flora of East Asia. Its primary value lies in botanical research and preserving the genetic diversity of the Celtis jessoensis species complex.
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