Images, type and code
Every botanical plate is an 18th- or 19th-century plate whose Wikimedia Commons page states a public-domain licence, downloaded once and served from this site. Author, date and licence are as Commons states them. Each page’s licence template has been read and checked against the author’s death year (provisional); each licence is not yet independently confirmed.
Botanical plates
Botanical plates (15 sourced)

- Plant
- Artemisia absinthium
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old}}read on 2026-11-07; not yet independently confirmed

- Plant
- Crocus sativus
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old}}read on 2026-11-07; not yet independently confirmed

- Plant
- Ranunculus ficaria
- Plate series
- Sturm, Deutschlands Flora in Abbildungen (1796–1855)
- Author (as on Commons)
- Johann Georg Sturm (Painter: Jacob Sturm)
- Date field on Commons
- 1796
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old-100}}read on 2026-11-07; not yet independently confirmed⚑ the Source field names only a website, not the printed work
- Commons file
- File:Ranunculus_ficaria_Sturm59.jpg

- Plant
- Glycyrrhiza glabra
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old}}read on 2026-11-07; not yet independently confirmed

- Plant
- Galium aparine
- Plate series
- Thomé, Flora von Deutschland, Österreich und der Schweiz (1885)
- Author (as on Commons)
- Prof. Dr. Thomé
- Date field on Commons
- 2008-11-07 01:44
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-scan|PD-old-auto-expired|deathyear=1925}}read on 2026-11-07; not yet independently confirmed⚑ the Date field gives a modern date (likely the scan or upload date, not the plate's)⚑ the Source field names only a website, not the printed work⚑ plates of this series state different author death years (1887, 1925); this page states 1925
- Commons file
- File:Illustration_Galium_aparine0.jpg

- Plant
- Chelidonium majus
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old}}read on 2026-11-07; not yet independently confirmed

- Plant
- Hyoscyamus niger
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old-80-expired}}read on 2026-11-07; not yet independently confirmed

- Plant
- Agrimonia eupatoria
- Plate series
- Thomé, Flora von Deutschland, Österreich und der Schweiz (1885)
- Author (as on Commons)
- Not stated
- Date field on Commons
- Not stated
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-scan|PD-old-auto-1923|deathyear=1887}}read on 2026-11-07; not yet independently confirmed⚑ no Date field⚑ no Author field⚑ plates of this series state different author death years (1887, 1925); this page states 1887
- Commons file
- File:Illustration_Agrimonia_eupatoria0.jpg

- Plant
- Salvia sclarea
- Plate series
- Sturm, Deutschlands Flora in Abbildungen (1796–1855)
- Author (as on Commons)
- Johann Georg Sturm (Painter: Jacob Sturm)
- Date field on Commons
- 1796
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old-100}}read on 2026-11-07; not yet independently confirmed
- Commons file
- File:Salvia_sclarea_Sturm50.jpg

- Plant
- Papaver somniferum
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old}}read on 2026-11-07; not yet independently confirmed

- Plant
- Humulus lupulus
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old}}read on 2026-11-07; not yet independently confirmed

- Plant
- Coriandrum sativum
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old}}read on 2026-11-07; not yet independently confirmed

- Plant
- Carum carvi
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old}}read on 2026-11-07; not yet independently confirmed

- Plant
- Citrullus colocynthis
- Plate series
- Köhler's Medizinal-Pflanzen (1883–1898)
- Author (as on Commons)
- Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
- Date field on Commons
- 1897
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-old}}read on 2026-11-07; not yet independently confirmed

- Plant
- Filipendula ulmaria
- Plate series
- Thomé, Flora von Deutschland, Österreich und der Schweiz (1885)
- Author (as on Commons)
- Not stated
- Date field on Commons
- Not stated
- Licence (as on Commons)
- Public domainlicence to confirm
- Check of the Commons page
- Provisional: not independently validatedChecked only by an automated or unverified check. Useful for finding problems; never a validation.Read on 2026-11-07; not yet independently confirmed.{{PD-scan|PD-old-auto-1923|deathyear=1925}}read on 2026-11-07; not yet independently confirmed⚑ no Date field⚑ no Author field⚑ plates of this series state different author death years (1887, 1925); this page states 1925
- Commons file
- File:Illustration_Filipendula_ulmaria0.jpg
No plate was found for Ajuga chamaepitys, Raphanus sativus, Allium cepa and Betonica officinalis in the three series searched (Köhler 1883–1898, Thomé 1885, Sturm 1796–1855); they show the drawn placeholder instead of a doubtful image.
Typefaces
- Fraunces · Herbarium display · SIL Open Font License 1.1 (licence file in
/fonts/) - Instrument Sans · Herbarium text · SIL Open Font License 1.1 (licence file in
/fonts/) - JetBrains Mono · Herbarium numbers · SIL Open Font License 1.1 (licence file in
/fonts/) - Instrument Serif · Nocturne display · SIL Open Font License 1.1 (licence file in
/fonts/) - Hanken Grotesk · Nocturne text · SIL Open Font License 1.1 (licence file in
/fonts/) - DM Mono · Nocturne numbers · SIL Open Font License 1.1 (licence file in
/fonts/)
Code
The in-browser preparation engine includes a port of NumPy 2.4.6’s random-number generator and its ziggurat tables (BSD-3-Clause, NumPy Developers). The site’s own code is MIT; its derived data are CC BY 4.0 with the exceptions in LICENSE-DATA.