It appears to be https://efloraofindia.com/efi/rumex-dentatus/ as per images herein.
Regarding subspecies Google AI gives these differences: *Rumex dentatus* subsp. *nigricans* and *subsp. dentatus* are infraspecific taxa of the highly variable *Rumex dentatus* (Toothed Dock) species. They differ primarily in their geographical distribution and subtle morphological features of the inner tepals (valves). *Subsp. nigricans* is generally recognized as a distinct, often geographically specific race, while *subsp. dentatus* (sometimes associated with *subsp. callosissimus*) typically features distinct tubercles and specific valve teeth lengths. [image: Plants of the World Online | Kew Science]Plants of the World Online | Kew Science +6 Key differences include: - Taxonomic Status & Distribution: Both are recognized as distinct subspecies within the *R. dentatus* complex. *Rumex nigricans* Hook.f. is considered a synonym for *R. dentatus* subsp. *nigricans*. - Morphological Distinctions: While both have 3-4 teeth on their valves*R. dentatus* subsp. *dentatus* is characterized by inner tepals that are 3–4 × 2 mm, acute, with tubercles covering nearly the entire lamina. The teeth on *subsp. dentatus* are often shorter than the width of the valve. - Variation: *Rumex dentatus* is notoriously polymorphic, with seven or more geographical races across Europe, Asia, and Africa, making precise identification based solely on vegetative characteristics difficult without analyzing mature fruits (valves). [image: Plants of the World Online | Kew Science]Plants of the World Online | Kew Science +5 Both are annual or biennial herbs preferring similar, often moist, habitats. On Mon, 23 Feb 2026 at 14:53, Saroj Kasaju <[email protected]> wrote: > *Rumex dentatus *subsp. *nigricans *(Hook.fil.) Rech.fil. ?? > > Thank you. > > Saroj Kasaju > > > On Mon, Feb 23, 2026 at 2:10 PM Rahul Das <[email protected]> wrote: > >> Collected from Local wetland near kolkata >> >> -- >> You received this message because you are subscribed to the Google Groups >> "eFloraofIndia" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion, visit >> https://groups.google.com/d/msgid/indiantreepix/CAKsXYQx%2B_Gq0v95ZO-d9hkT%2BpM2aFtEfKE88Mg75Z6GWOR1C5w%40mail.gmail.com >> <https://groups.google.com/d/msgid/indiantreepix/CAKsXYQx%2B_Gq0v95ZO-d9hkT%2BpM2aFtEfKE88Mg75Z6GWOR1C5w%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- With regards, J.M.Garg, https://efloraofindia.com/ -- You received this message because you are subscribed to the Google Groups "eFloraofIndia" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/indiantreepix/CA%2BiuSFDEDGnms24mnO-e7jxtHdkGKP6PHHpkg7WPxEvhjzF5qQ%40mail.gmail.com.
