Morchella sextelata

What it is

Morchella sextelata is a true morel and one of the black morels of the Elata clade. It is the species grown in managed beds and greenhouses in China, and it is also sold dried. Wild and cultivated morels are often sold under one common name, so records should be checked against the scientific name.

Taxonomy

Recent phylogenetic work splits the genus Morchella into three clades. The black morels of the Elata clade include M. sextelata with M. importuna and M. eximia. Most of these species are confined to particular regions, with a few more widely distributed.

The catalogue lists the name as a research label without blanket current-name validation. The species name should be kept separate from the cultivated black morel, which is a common name that can cover more than one species.

How it is cultivated

Greenhouse methods for black morels were developed in China and have greatly increased production. The main cultivated black morels are soil-saprophytic: they feed on organic matter in the soil and so must be covered with soil during cultivation.

Cultivation remains difficult. Yield is unstable from one season to the next, and pathogens can damage the crop. The sources do not give a standard yield, a temperature schedule or a fixed cycle, and none should be inferred from the general method.

Eating and safety

The morel is a food crop and is also dried for sale. Cooking is the main control for the raw-eating risk. The CDC report summarises the advice that morels should be cooked before eating to reduce potential toxic effects.

The 2023 Montana outbreak was linked to a restaurant sushi roll that contained morels. Fifty-one people had gastrointestinal illness and two died. Raw morels were more strongly associated with illness than cooked or partially cooked ones, and the dose-response pattern suggested that more of the roll meant higher risk. No single toxin was confirmed, because morel toxins are not well characterised. Cooking mitigates the risk but is not an absolute guarantee, and the catalogue treats the entry as research rather than a preparation validated for safety.

Appearance, smell and taste do not establish that a morel is safe. Anyone preparing morels should follow an official food safety source rather than this page.

Notes

Open points: the exact species identity of much commercial and wild black morel material, the yield and cycle figures for cultivation, and the food history of the species before modern cultivation are not established by the sources reviewed here.