Tirmania pinoyi

Overview

Tirmania pinoyi is a desert truffle, a hypogeous fungus of the family Terfeziaceae. Like the related genus Terfezia, it lives in a mycorrhizal partnership with the roots of rock-rose relatives of the genus Helianthemum in arid ground. The fruit body grows underground, and it is found by people who know the terrain and the signs of the soil.

The catalogue used for this page records it as a wild edible desert truffle collected and traded in North Africa. The genus is well known in the Arabian Peninsula and North Africa, where desert truffles are eaten, though the sources reviewed describe the genus more fully than this one species.

Taxonomy and names

The genus Tirmania has been described with two species in the source used here: Tirmania nivea, the white truffle, and T. pinoyi, which the same page lists as a synonym of T. africana. The catalogue records T. pinoyi as a research label rather than a reconciled accepted name, so the name should be checked against current authority before any record is treated as settled.

Local names for desert truffles in general include terfez, terfas, kama, faqa and p/faqa. Zubaydiya is the name for T. nivea in Saudi Arabia and Oman. None of the sources reviewed gives a local name for T. pinoyi alone, so this is unknown.

Habitat and ecology

Tirmania grows in arid deserts. Its host is Helianthemum, and the same host can serve Terfezia. The genera occur in the Mediterranean region, the Arabian Peninsula and North Africa, with some reports from South Africa and China. The specific range of T. pinoyi within these areas is not established by the sources reviewed beyond the North African records in the catalogue.

Identification

The guide used here gives a field test for the genus: iodine turns the cut flesh blue-green to black. The spores are smooth. The unripe gleba is white to cream, yellow or pink and darkens as the fruit body matures. Because these features are the basis for telling desert truffles apart, a fresh, cut specimen is a better test than appearance alone.

A traditional warning in the sources is to avoid truffles with holes in them. The guide notes that the holes were said to be bite marks from venomous snakes. The species-level keys for T. pinoyi are not reproduced here.

Use and preparation

Desert truffles in the sources are roasted in embers, fried in butter, added to soups, and cooked with eggs. Dried, ground truffle is mixed into flatbread and eaten with honey. The guide notes that drying does not keep the aroma, and that the flavour develops as the truffle matures.

Sources describe the flavour of desert truffles as milder than that of true truffles. Culinary notes specific to this species are not recorded in the sources reviewed, so none is given here.

Safety

The sources reviewed do not give a toxicity or safety statement for Tirmania pinoyi, and no safe quantity or cooking method is recorded for this species. The genus guide describes desert truffles as nutritious and high in protein, and it does not treat that as a safety verdict.

Appearance, smell and taste do not establish that a truffle is safe to eat. Identify wild truffles with a qualified expert and follow official food safety advice before eating any wild fungus.

Open questions

The sources do not give a dated food history for T. pinoyi, a species-level edibility assessment, a species-level local name, or a Pakistani or other regional name. The catalogue flags the record for specialist review. These are unknown, not negative findings.