Taxonomy of Toxins

Needs Investigation

287 species

The following is a list of mushrooms that may have a molecule of potential concern in raw mushrooms. If there is such a molecule, it needs identifying so that the mushroom's edibility classification can be clarified as to whether the molecule is water soluble, degrades in heat at 100 °C or below, or is volatile.

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.

SpeciesName
Agaricus californicusinvestiganda
Agaricus pequiniiinvestiganda
Agrocybe sallcaelcolainvestiganda
Agrocybe tibetensisinvestiganda
Amanita baccatainvestiganda
Amanita castanopsidisinvestiganda
Amanita clarisquamosainvestiganda
Amanita cokeriinvestiganda
Amanita flavipesinvestiganda
Amanita griseoroseainvestiganda
Amanita griseoverrucosainvestiganda
Amanita incarnatifoliainvestiganda
Amanita kotohiraensisinvestiganda
Amanita longistriatainvestiganda
Amanita melleialbainvestiganda
Amanita melleicepsinvestiganda
Amanita mirainvestiganda
Amanita molliusculainvestiganda
Amanita oberwinklerianainvestiganda
Amanita orsoniiinvestiganda
Amanita ovoideainvestiganda
Amanita parviexitialisinvestiganda
Amanita parvipantherinainvestiganda
Amanita pseudogemmatainvestiganda
Amanita rufoferrugineainvestiganda
Amanita sculptainvestiganda
Amanita sepiaceainvestiganda
Amanita sphaerobulbosainvestiganda
Amanita subfuligineainvestiganda
Amanita submembranaceainvestiganda
Amanita tomentosivolvainvestiganda
Amanita verrucosivolvainvestiganda
Amanita virgineoidesinvestiganda
Armillaria luteobubalinainvestiganda
Basidopus amictusinvestiganda
Battarea phalloidesinvestiganda
Bolbitius titubansinvestiganda
Bolbitius yunnanensisinvestiganda
Boletellus ananicepsinvestiganda
Boletus sensibilisinvestiganda
Boletus subvelutipesinvestiganda
Bovista paludosainvestiganda
Caloboletus calopus (was Boletus calopus)investiganda
Caloboletus panniformisinvestiganda
Calvatia boonianainvestiganda
Calvatia purpureainvestiganda
Cantharellus tubaeformisinvestiganda
Chlorophyllum brunneuminvestiganda
Chlorophyllum globosuminvestiganda
Chlorophyllum molybditesinvestiganda-molybdophyllysinica
Chlorophyllum neomastoideuminvestiganda
Chlorophyllum rhacodesinvestiganda
Clathrus ruberinvestiganda
Clavariadelphus pistillarisinvestiganda-pistillarinica
Clitocybe bresadolanainvestiganda
Clitocybe nebularisinvestiganda
Clitocybe obsoletainvestiganda
Clitocybe ornamentalisinvestiganda
Clitocybe phyllophilainvestiganda
Clitocybe sudorificainvestiganda
Collybia nudainvestiganda
Conocybe apalainvestiganda
Conocybe cylindrosporainvestiganda
Conocybe serratainvestiganda
Conocybe tenerainvestiganda
Coprinellus pseudodisseminatusinvestiganda
Coprinopsis alopeciainvestiganda
Coprinopsis hispidainvestiganda
Coprinopsis picaceainvestiganda
Cordyceps brasiliensisinvestiganda
Cortinarius bolarisinvestiganda
Cortinarius gentilisinvestiganda
Cortinarius percomisinvestiganda
Cortinarius rubicundulusinvestiganda
Cortinarius semisanguineusinvestiganda
Cortinarius traganusinvestiganda
Cyanosporus miscanthiinvestiganda
Cystoderma terreiiinvestiganda
Deconica merdariainvestiganda
Deconica montanainvestiganda
Echinoderma asperuminvestiganda
Endophyllus yunnanensisinvestiganda
Entoloma chalybeuminvestiganda
Entoloma incanuminvestiganda
Entoloma omienseinvestiganda
Entoloma quadratuminvestiganda
Entoloma rhodopoliuminvestiganda
Entoloma vernuminvestiganda
Fames fomentariusinvestiganda
Galerina fasciculatainvestiganda
Galerina filiformisinvestiganda
Galerina helvolicepsinvestiganda
Galerina heterocystisinvestiganda
Galerina hypnoruminvestiganda
Galerina megalocystisinvestiganda
Galerina oregonensisinvestiganda
Galerina perplexainvestiganda
Galerina pistillicystisinvestiganda
Galerina subpectinatainvestiganda
Galerina sulcicepsinvestiganda
Galerina vittiformisinvestiganda
Geastrum oxysepaluminvestiganda
Gomphus orientalisinvestiganda
Gymnopilus fulgensinvestiganda
Gymnopilus penetransinvestiganda
Gyrodon lividusinvestiganda-involutinica
Gyromitra fastigiatainvestiganda
Hapalopilus nidulansinvestiganda
Hapalopilus rutilansinvestiganda
Hebeloma crustuliniformeinvestiganda
Hebeloma fastibileinvestiganda
Hebeloma mesophaeuminvestiganda
Hebeloma sacchariolensinvestiganda
Hebeloma sinapizansinvestiganda
Hebeloma vinosophylluminvestiganda
Heimioporus conicusinvestiganda
Heimioporus gaojiaoconginvestiganda
Helvella acetabuluminvestiganda
Helvella crispainvestiganda
Helvella elasticainvestiganda
Helvella lacunosainvestiganda
Helvella leucopusinvestiganda
Helvella neofistulosainvestiganda
Helvella pseudoreflexainvestiganda
Helvella subglabroidesinvestiganda
Hygrocybe mucronellainvestiganda
Hygrocybe ovinainvestiganda
Hygrocybe spadiceainvestiganda
Hygrocybe suzukaensisinvestiganda
Hypholoma australianuminvestiganda
Hypholoma cinnabarinuminvestiganda
Hypholoma dispersuminvestiganda
Hypholoma fasciculareinvestiganda
Hypholoma lateritiuminvestiganda
Imperator rhodopurpureusinvestiganda
Inocybe auricomainvestiganda
Inocybe bongardiiinvestiganda
Inocybe brunneainvestiganda
Inocybe calamistratainvestiganda
Inocybe cincinnatainvestiganda
Inocybe decipientoidesinvestiganda
Inocybe dulcamarainvestiganda
Inocybe flavobrunneainvestiganda
Inocybe godeyiinvestiganda
Inocybe lanuginosainvestiganda
Inocybe maculatainvestiganda
Inocybe napipesinvestiganda
Inocybe nitidiusculainvestiganda
Inocybe pallidicremeainvestiganda
Inocybe praetervisainvestiganda
Inocybe pyriodorainvestiganda
Inocybe radiatainvestiganda
Inocybe repandainvestiganda
Inocybe whiteiinvestiganda
Inosperma adaequatuminvestiganda
Inosperma cookeiinvestiganda
Ionomidotis fulvotingensinvestiganda
Ionomidotis spruceiinvestiganda
Laccaria scrobiculatusinvestiganda
Lactarius oomsisiensisinvestiganda
Lactarius rubrobrunneusinvestiganda
Laetiporus cremeiporusinvestiganda-incognita
Lanmaoa asiaticainvestiganda-incognita
Lentinus squarrulosusinvestiganda
Leotia stipitatainvestiganda
Lepiota brunneolilaceainvestiganda
Lepiota cristatainvestiganda
Lepiota cristataneainvestiganda
Leucoagaricus badhamiiinvestiganda
Leucoagaricus centrobrunneolusinvestiganda
Leucoagaricus testaceumbonatusinvestiganda
Leucocoprinus birnbaumiiinvestiganda
Leucocoprinus cygneusinvestiganda
Leucocoprinus infuscatusinvestiganda
Leucocoprinus vassiljevaeinvestiganda
Lignosos sacerinvestiganda
Lopharia papyraceainvestiganda
Lulesia popinalisinvestiganda
Lycoperdon lividuminvestiganda
Lycoperdon molleinvestiganda
Lyophyllum oyisporuminvestiganda
Lysurus arachnoideusinvestiganda
Macrocystidia hebeiensisinvestiganda
Marasmius conigenusinvestiganda
Marasmius pinicolainvestiganda
Megacollybia platyphyllainvestiganda
Mutinus bambusinusinvestiganda
Mutinus caninusinvestiganda
Mycena pelianthinainvestiganda
Mycena purainvestiganda
Naematoloma gracileinvestiganda
Omphalotus flagelliformisinvestiganda
Omphalotus japonicusinvestiganda
Omphalotus nidiformisinvestiganda
Omphalotus oleariusinvestiganda
Omphalotus olivascensinvestiganda
Omphalotus yunnanensisinvestiganda
Ophiocordyceps jiangxiensisinvestiganda
Ophiocordyceps soboliferainvestiganda
Panaeolina foeniseciiinvestiganda
Panaeolus alcisinvestiganda
Panaeolus aterinvestiganda
Panaeolus bisporusinvestiganda
Panaeolus fimicolainvestiganda
Panaeolus papilionaceusinvestiganda
Panaeolus semiovatusinvestiganda
Panaeolus sepulchralisinvestiganda
Panaeolus subbalteatusinvestiganda
Panaeolus tropicalisinvestiganda
Paralepista maculosainvestiganda
Paxillus orientalisinvestiganda
Paxillus rubicundulusinvestiganda
Paxina macropusinvestiganda
Phaeocollybia columbianainvestiganda
Phaeocollybia jennyaeinvestiganda
Phaeocollybia similisinvestiganda
Phaeogalera stagninainvestiganda
Phaeolepiota aureainvestiganda
Phanerochaete filamentosainvestiganda
Pholiota edulisinvestiganda
Pholiota piceinainvestiganda
Pleurocybella porrigensinvestiganda-pleurocybellica
Pleurotus concavusinvestiganda
Pleurotus roseopileatusinvestiganda
Porostereum friesiiinvestiganda
Psathryella hymenocephalainvestiganda
Psathyrella castaneifoliainvestiganda
Psathyrella corrugisinvestiganda
Psathyrella kauffmaniiinvestiganda
Pseudoarmillariella ectypoidesinvestiganda
Pseudosperma squamatuminvestiganda
Psilocybe argentipesinvestiganda
Psilocybe coprophilainvestiganda
Psilocybe fasciatainvestiganda
Psilocybe mongolicainvestiganda
Psilocybe samuiensisinvestiganda
Psilocybe subcaerulipesinvestiganda
Psilocybe wayanadensisinvestiganda
Psilocybe yungensisinvestiganda
Pulveroboletus icterinusinvestiganda
Ramaria botrytisinvestiganda-pistillarinica
Ramaria cystidiophorainvestiganda
Ramaria flavainvestiganda-pistillarinica
Ramaria flavobrunnescensinvestiganda-pistillarinica
Ramaria formosainvestiganda-pistillarinica
Ramaria gelatinosa var. oregonensisinvestiganda
Ramaria largentiiinvestiganda
Ramaria maireiinvestiganda-pistillarinica
Ramaria pulcherrimainvestiganda
Ramaria subaurantiacainvestiganda-pistillarinica
Ramaria toxicainvestiganda
Retiboletus nigerrimusinvestiganda
Rubinoboletus ballouiiinvestiganda-pistillarinica
Rubroboletus sinicusinvestiganda
Russula japonicainvestiganda
Russula metachroainvestiganda
Russula subnigricansinedulis-cyclopropenica
Russula tenuicepsinvestiganda
Sarcosphaera coronariainvestiganda
Scleroderma australeinvestiganda
Singerocybe beijingensisinvestiganda
Stropharia yunnanensisinvestiganda
Suillus pictusinvestiganda
Suitlus americanusinvestiganda
Suitlus pungensinvestiganda
Suitlus subluteusinvestiganda
Sutorius sanguineoidesinvestiganda
Sutorius sanguineusinvestiganda
Sutorius venenatusinvestiganda
Tolypocladium dujiaolongaeinvestiganda
Tricholoma equestreinvestiganda
Tricholoma highlandenseinvestiganda
Tricholoma kakishimejiinvestiganda-ustalica
Tricholoma muscarioidesinvestiganda
Tricholoma pardinuminvestiganda
Tricholoma pessundatuminvestiganda
Tricholoma sciodesinvestiganda
Tricholoma sinopardinuminvestiganda
Tricholoma tigrinuminvestiganda
Trogia venenatainvestiganda-hexynoica
Turbinellus floccosusinvestiganda-norcaperatica
Turbinellus kauffmaniiinvestiganda-norcaperatica
Tylopilus neofelleusinvestiganda
Tylopilus otsuensisinvestiganda
Ustilago maydisinvestiganda
Vascellum gudeniiinvestiganda
Wynnea gigantea var. nanainvestiganda

Download: needs-investigation.csv.

Cite this pageRubel, William. 2026. “Needs Investigation.” Taxonomy of Toxins. Last modified 24 October 2026. https://taxonomyoftoxins.com/investigation/