There seems to be disagreement whether it ought to be spelled narrow-leafed or narrow-leaved. Neither is easy to say, for the record.

Music by James Milor from Pixabay

Information provided by:

• https://www.bbc.com/news/science-environment-17100574
• https://www.nationalgeographic.com/science/article/120221-oldest-seeds-regenerated-plants-science
• https://www.livescience.com/2602-extinct-tree-christ-time-rises-dead.html
• https://www.abc.net.au/science/articles/2012/02/22/3436826.htm
• Germination, genetics, and growth of an ancient date seed by Sarah Sallon, et al. (2008). Science, 320(5882), pg. 1464. https://doi.org/10.1126/science.1153600 [Abstract]
• https://www.selinawamucii.com/plants/caryophyllaceae/silene-stenophylla/
• Exceptional seed longevity and robust growth: Ancient Sacred Lotus from China by J. Shen-Miller, et al. (1995). American Journal of Botany, 82(11), pg. 1367-1380. https://doi.org/10.2307/2445863
• https://en.wikipedia.org/wiki/Oldest_viable_seed
• https://en.wikipedia.org/wiki/Silene_stenophylla
• Regeneration of whole fertile plants from 30,000-y-old fruit tissue buried in Siberian permafrost by Svetlana Yashina, et al. (2012). Proceedings of the National Academy of Sciences, 109(10), pg. 4008-4013. https://doi.org/10.1073/pnas.1118386109