# Karl Reinhold Kupffer

> Baltic German botanist and mathematician (1872-1935)

**Wikidata**: [Q4247625](https://www.wikidata.org/wiki/Q4247625)  
**Source**: https://4ort.xyz/entity/karl-reinhold-kupffer


## References

1. Czech National Authority Database
2. Bionomia
3. Virtual International Authority File
4. CiNii Research
5. International Plant Names Index
6. author citation in botany and mycology
7. Baltisches biografisches Lexikon digital
8. Harvard Index of Botanists
9. NUKAT
10. MAK
11. [Source](https://herbarium.bgbm.org/object/B101001883)
12. [Source](https://brnu.jacq.org/BRNU004772)
13. [Source](https://pi.jacq.org/PI051317)
14. [Source](https://wu.jacq.org/WU0122018)
15. [Bionomia](https://bionomia.net/dataset/f934f8e2-32ca-46a7-b2f8-b032a4740454)
16. [Bionomia](https://bionomia.net/dataset/ee0e7875-8fbc-4cd8-a6a8-65f4a871e2ea)