Area of occupancy estimated at 60 km2, with 7 known locations and concern over the extent and quality of habitat.
Russula albolutescens is one of the more recognisable but uncommon Russula species associated with tea-tree (myrtaceae) with a thin pale cap and pectinate cap edge.
The genus has been extensively surveyed and studied in New Zealand over a period of 60 years. This species, and most other New Zealand Russula species are sequence barcoded.
Why suggested for a Global Red List Assessment?
A distinct pale species of Russula associated with tea-tree in areas under-going land-use change and impacted by invasive species.
Preliminary category: B2 Vulnerable
Population and Trends
Of the 7 known locations 4 are in unprotected areas with < 30% indigenous cover (indicating past clearance) adjacent to pasture grassland. The type locality, and centre of most records, is west of Auckland, where the original location from 1967 is now a built-up area and another has been cleared of tea-tree. Populations will have decreased in the last 50 years.
We infer the presence 23 genotypes, x 10 to account for undetected colonies, x 5 to convert to an estimate of 1,150 mature individuals. Extent of Occurrence 80,000 km2, Area of Occupancy 60 km2
Habitat and Ecology
The species is ectomycorrhizal and associated with tea-tree (myrtaceae)
The known populations west of Auckland in the Waitakai ranges are in areas with popular walking tracks and the area with significant Kauri die-back disease. Management of the disease may impact on the populations.
In many areas of New Zealand tea-tree has been, and continues to be, cleared for farming, with scrub remnants especially prone to clearing to support the deployment of large-scale automated irrigation equipment.