We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.
Last full accuracy audit: 2026-09-02 · 5 entries checked · 4 flagged · 9 issues confirmed · 4 corrected · 5 still open
Abies alba — The claim that the wood from casks was 'later recycled into writing tablets' is not a documented historical practice; Roman writing tablets were made from fir wood, but not necessarily from recycled casks.
Abies balsamea — The claim that balsam fir was used only once (in 1973) as the US Capitol Christmas Tree between 1964 and 2019 is incorrect; it was also used in other years such as 1965, 1967, 1971, and 1975.
Abies balsamea — The claim that the tree's essential oil is an 'EPA-approved nontoxic rodent repellent' is misleading because EPA approval applies to specific registered products, not to the oil in general.
Abies grandis — The entry states 'First described in 1832 by David Douglas,' but the species was described by David Douglas in 1831, with formal publication by John Lindley in 1833; the 1832 date is incorrect.
Abies grandis — The entry says 'brought its seeds to Britain in 1830 and described specimens collected along the Columbia River in 1832.' Douglas collected seeds in 1830, but the description was published in 1831, not 1832.
Abies procera — The entry states the species was reclassified as Abies procera by Alfred Rehder in 1940, but the correct year of Rehder's reclassification is 1919, not 1940.
Abies procera — The entry claims the altitude range is 300–1,500 meters (1,000–4,900 ft), but the widely accepted altitude range for Abies procera is approximately 600–1,800 meters (2,000–5,900 ft).
All content is fetchable as JSON at /data/content/ · llms.txt · sitemap
Spotted an error? Suggest an edit — reader reports go straight into the audit queue.