Alwin Berger (1871-1931)

He was the author of several books devoted either to succulents or to cacti.

No copyright (public domain)

Published in 1915, this is an interesting contribution with 48 B&W pictures

• Original file: can be downloaded from the Frankfurt University library¹⁾. “berger_high.pdf” is a heavy (163 MB) high definition file whereas “berger_screen.pdf” is a lighter version (59 MB); “berger_schnupper.pdf” is a sample; and from Biodiversity Heritage Library (BHL)²⁾: dieagavenbeitr00berg.pdf.
• Interpreted file: Not still available.

Right: Agave latissima (Extracted from the pdf of the link above)

No copyright (public domain)

Published in 1905, In the Annual Report of the Missouri Botanical Garden. He proposed to split the Cereus genus of Schumann as defined 5 years before into several subgenera that were then recognized (or resurected) as genera By Britton and Rose 15 years later.

• Read online
• Download:
  • A pdf file containing both the original and interpreted text (p. 57-86) can be downloaded as mobot31753003450266.pdf³⁾, which is hosted by the Biodiversity Heritage Library (BHL)⁴⁾.

Right: Alwin Berger. Kakteen von A bis Z, Walther Haage, Neumann, 1983.

No copyright (public domain)

Published in 1929, this is an exhaustive contribution (334 pages, 104 B&W pictures) of an unsufficiently known author who had a broad scientific. knowledge

• Read online in the reading room
• Download:
  • Interpreted file: Berger_Kakteen.pdf (17.3MB; 2007-12-31)
  • Original file: Berger_Kakteen_O.pdf (99.3MB; 2006-12-31)

Right: Ariocarpus trigonus (p. 333)