English: "Heliamphora nutans Benth. A Entire Plant. B Androecium. C Stamen. D Pistil. E Transverse section of the ovary. F Seed, with the testa. G Vertical section of the seed. H Embryo."
Date
Source
Macfarlane, J.M. 1908. Sarraceniaceae. In: A. Engler Das Pflanzenreich IV, 110, Heft 36: 1–91.
The author died in 1943, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 80 years or fewer.