AWhat changed
Botanical structure gained a unifying cellular unit, despite an incorrect proposed formation mechanism.
Scientific scope
The 1838 plant contribution; not its rejected free-cell-formation mechanism, Schwann's animal extension, cell continuity or later pathology.
Evidence
The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The target is the 1838 plant contribution. Its proposed mechanism of free cell formation was later rejected, and Schwann’s animal generalization is separate.
Contributors
- Matthias Jakob Schleiden · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
- Schleiden, Contributions to Phytogenesis (English translation)
- Marine Biological Laboratory: The theory of cells as basic units of life
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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