01 — Truffle species
Tuber magnatum
Bijeli tartuf · White truffle · Tartufo bianco · Weiße Trüffel
External identifierWikidataQ2360313
Tuber magnatum Pico is the white-truffle species found in Italy and Istria. Istrian white truffles and those commonly called Alba white truffles belong to the same species: geographic origin is a separate question from the identity of the fungus. This record covers the species’ features and explains what its names and aroma research can establish.
02Identification
The recorded biological season is September — January, with a peak in October — December. The biological season describes the species; legal collection periods depend on the territory. Legal collecting windows
- Season
- September — January
- Peak
- October — December
- Outer skin (peridium)
- smooth, pale ochre to cream
- Interior (gleba)
- pale brown with fine white veins
- Aroma
- intense
- Size
- 20–120 mm
- 01Outer skin (peridium) — smooth, pale ochre to cream
- 02Interior (gleba) — pale brown with fine white veins
03Istrian and Alba White Truffles: Species and Origin
Habitat: soil, water and oxygen
Understanding Tuber magnatum habitat requires considering water, soil structure and aeration together. The habitat article explains the Motovun study and its limitations in detail.
White truffle habitat in Istria
- The soil environment for Tuber magnatum growth in Motovun Forest, Istria (Natura Croatica 13(2): 171–185) — Hrvatski prirodoslovni muzej / Croatian Natural History Museum — Hrčak
One Species, Several Names and Regions
The Regione Campania guide lists Alba, Piedmont and Acqualagna white truffles among the common names for Tuber magnatum. Rubini and colleagues studied specimens of the same species collected in Italy and in Istria, in Croatia and Slovenia. “Istrian” describes an origin, not a different truffle species.
The scientific name identifies the species but does not certify where an individual specimen was collected. A common name associated with a town must also be distinguished from the product’s documented origin.
How to Read Species and Origin on a Label
- Guida breve alla raccolta e commercializzazione del tartufo in Campania — Regione Campania, Assessorato Agricoltura
- Genetic and Phylogeographic Structures of the Symbiotic Fungus Tuber magnatum — Rubini et al. — Applied and Environmental Microbiology
Origin, Aroma and Quality: Limits of the Comparison
The same species does not mean identical aroma in every specimen. Vita and colleagues compared Tuber magnatum samples from Italian and Istrian locations, finding differences in volatile compounds and other metabolites associated with origin and environmental conditions.
This is a chemical comparison of the samples studied, not a ranking of taste or proof that all truffles from one country are better or worse. These results cannot assign a quality grade to an individual truffle based only on its country of collection.
- Environmental conditions influence the biochemical properties of the fruiting bodies of Tuber magnatum Pico — Vita et al. — Scientific Reports
The Historical Connection with Italy
The history of Istrian collection predates today’s borders. Treccani records the assignment of Istria to Italy under the 1920 Treaty of Rapallo. Tanja Kocković Zaborski’s archival review reports a 1929 discovery account in Pazinski Novaki and a company founded in Livade in 1933: events in organised truffle collection during the Italian period.
For a truffle collected in Croatian Istria, “foreign” in relation to Italy refers to the country of collection, not a different species. The historical context helps explain the connection between Istria and Italy but does not establish the origin of a truffle sold today.
Istrian Truffle History and Archival Sources
- Italia — Dizionario di Storia (2010) — Istituto della Enciclopedia Italiana — Treccani
- Povijest tartufarenja u Istri — Vjesnik istarskog arhiva
- Tartufarstvo u Istri (Etnološka istraživanja br. 9: 117–125) — Etnografski muzej Istre — Hrčak
For local context, read about truffles in Istria. The species name does not establish certification. Read about the Istrian white truffle designation procedure.
04Ecology
Host trees
- Oak · Quercus
- Poplar · Populus
- Willow · Salix
- Lime · Tilia
- Hornbeam · Carpinus
- Hop hornbeam · Ostrya
- Hazel · Corylus
- In Istria
- one of the species Istria is known for
05Species and evidenced relations
Only relations supported by a public source on the review date are shown. This is not a stock or current-availability list.
- Appennino Food GroupSells · Evidence source
- LaumontImports and resells · Evidence source
06Species it can be confused with
The bianchetto or spring white truffle (Tuber borchii) is a different species from Tuber magnatum. Pale colour alone does not identify Tuber magnatum: compare the features of the two species.
- Compare with Tuber borchiiBianchetto truffle
07Connected records
- SeasonSeptember — January
- Legal collecting windowsSeason
- Truffles in Istria: documented geographic contextWhite truffle
- Motovun ForestIstria
- What Is a Truffle? The Tuber Fungus ExplainedKnowledge
- How Do Truffles Grow? Mycorrhiza and the Life CycleKnowledge
- How Are Truffles Found and Collected?Knowledge
- How to Store Fresh TrufflesKnowledge
- How to Clean a Fresh Truffle and Use Its AromaKnowledge
- Truffle Aroma: What We KnowKnowledge
- How to Read a Truffle Product LabelKnowledge
- How Are Truffle Species Identified?Knowledge
- Istrian White Truffle: PDO StatusKnowledge
- History of Truffle Hunting in IstriaKnowledge
- Can Truffles Be Cultivated?Knowledge
- How to Assess Fresh-Truffle QualityKnowledge
- Climate and Truffle Harvests: What the Science ShowsKnowledge
- The White Truffle Habitat in Istria: Soil, Water and the Mirna ValleyKnowledge