The term "Grewia retinervis" does not appear to be widely recognized in established botanical or scientific literature as of the current reliable sources. While Grewia is a well-documented genus of flowering plants in the family Malvaceae (formerly Tiliaceae), comprising over 300 species of shrubs and trees distributed primarily in tropical regions, the specific epithet "retinervis" is not consistently documented in authoritative taxonomic databases such as Kew's Plants of the World Online (POWO), the International Plant Names Index (IPNI), or The World Flora Online.
The name "retinervis" suggests a possible reference to a morphological characteristic, derived from Latin, where "reti-" implies a network and "-nervis" relates to veins, potentially describing a reticulate venation pattern in the leaves. However, without verifiable taxonomic records or peer-reviewed descriptions, the existence and classification of Grewia retinervis as a distinct species remain unconfirmed.
Accurate information regarding its distribution, ecology, morphology, or nomenclatural status is not confirmed. It may represent a synonym, an unpublished name, or a misapplied epithet. Further verification through primary botanical literature or herbarium records would be required to establish its validity.
Until such data is available, Grewia retinervis cannot be considered an accepted scientific name in the current taxonomic framework.