Laetiporus cremeiporus
investiganda-incognita
f. cul.
Laetiporus cremeiporus investiganda-incognita
investiganda: Owed an investigation. The species is on the Needs Investigation table because a question stands on its published record that the Key cannot read a verdict from: a poisoning reported and no molecule found, a molecule found and no sourced route, a mark in a source list, a molecule known from this one species and not yet confirmed. The name is the stem of its recorded molecule, where the record names one and decides it, then investiganda, and nothing after it while the row is open. Where the record names no molecule the name is investiganda alone, and the gap is deliberate. The Key reads molecules: it puts a molecule in a name only when a record has placed that molecule in the mushroom. A poisoning report is not such a record; it says that harm occurred, not what caused it. The molecule may well exist, and the word states that it is to be found, not a guess at what it will be. The species is not innocuus, because innocuus means that the published record carries no link to a toxic molecule, and this species is on the table because the question of such a link is open; it would be innocuus only once the question is closed in that direction. The species leaves the table, and the word, by a ruling: its molecule registered and read, or its record found to carry no molecule after all. Latin, the gerundive of investigare: to be investigated.
On Needs Investigation, Medicinal Use, The Complete Table.
GBIF: photographs, names and where it has been found.
Sources
| Li et al. 2021 | 1 report of eating without harm Li H, Tian Y, Menolli N Jr, Ye L, Karunarathna SC, Perez-Moreno J, Rahman MM, Rashid MH, Phengsintham P, Rizal L, Kasuya T, Lim YW, Dutta AK, Khalid AN, Huyen LT, Balolong MP, Baruah G, Madawala S, Thongklang N, Hyde KD, Kirk PM, Xu J, Sheng J, Boa E, Mortimer PE (2021). Reviewing the world's edible mushroom species: a new evidence-based classification system. Comprehensive Reviews in Food Science and Food Safety 20: 1982-2014. Supplementary Table S1. link |
| Wu et al. 2026 | ‘食药用’ edible and medicinal — entry 1188, 奶油硫磺菌 Wu F, Liu SB, Wang XH, Zhang M, Yang ZL, Dai YC (2026). 中国食药用菌物种编目 [Species cataloging of edible and medicinal fungi in China]. 菌物学报 Mycosystema 45(1): 250237. link |
| Wu et al. 2019 | ‘E’ — Wu et al. 2019, Table 1, p. 26: E (edible) Wu F, Zhou L-W, Yang Z-L, Bau T, Li T-H, Dai Y-C (2019). Resource diversity of Chinese macrofungi: edible, medicinal and poisonous species. Fungal Diversity 98: 1-76. doi:10.1007/s13225-019-00432-7. Table 1, 'Medicinal fungi and their function(s)'. link |
| Xu et al. 2023 | ‘食药兼用’ edible and medicinal — Xu et al. 2023, Appendix 1, no. 306 Xu W-Q, Li Y, Li H-J, Liu D-M, Yang N, Zhang Q, He S-H (2023). 北京市大型真菌物种多样性调查与资源评价 [Species diversity and resource evaluation of macrofungi in Beijing]. 生物多样性 Biodiversity Science 31(10): 23196. link |
Needs Investigation. Why it is here: Its only molecule is M58, an unidentified agent tied to this species alone. The harm record is Japanese practice: eaten raw it can cause poisoning, so it is cooked thoroughly. WR, 2026-10-09, suspicious of every molecule found in a single mushroom, sent the species here. (a published record). What would settle it: Find a case report or assay that identifies the agent, and whether thorough cooking removes it. The practice sources as recorded: ja.wikipedia マスタケ; 森の休憩室; 秋田県森林学習交流館 (source_works 190, 191, 192). William Rubel evaluates.
Medicinal Use. Listed as medicinal: Wu et al. 2026, 食药用 ‘edible and medicinal’; Xu et al. 2023, 食药兼用 ‘edible and medicinal’. Under investigation: see Needs Investigation.
Cite this pageRubel, William. 2026. “Laetiporus cremeiporus.” Taxonomy of Toxins. Last modified 24 October 2026. https://taxonomyoftoxins.com/species/laetiporus-cremeiporus/