This species is known from the coastal Atlantic forest of Brazil and French Guiana. There are records from six sites, but it is likely to be more widespread. Based on the severe habitat decline within the area, we suspect a population decline of around 20% within the last three generations (50 years). It is therefore assessed as Near Threatened, nearly meeting Vulnerable A2c.
This species has limited distribution to coastal areas in South America, only known from French Guiana and Brazil. It grows only in conserved Atlantic Rainforest fragments, and such fragments are in constant threat by real estate speculation, mainly.
This species is known from six sites: one in French Guiana, where it was first described, in Réserve Naturelle Mont Grand Matoury, 4°51’54.0"N 52°21’00.0"W, at 50 m elevation; one in Northeast of Brazil, Pernambuco, Caruaru, Parque Municipal João Vasconcelos Sobrinho, 08°21’43"S 36°02’10"W, 859m alt.; and four in Southern Brazil, in Santa Catarina State: Florianópolis, Morro da Lagoa, 27°35’29.0"S 48°28’14.0"W, Lagoinha do Leste, 27°45’45.0"S 48°28’59.0"W, Blumenau, Parque Nacional da Serra do Itajaí, 27°02’00.0"S 49°02’45.0"W, Santo Amaro da Imperatriz, Parque Estadual da Serra do Tabuleiro, 27°44’02.0"S 48°48’35.0"W.
This species occurs in conserved fragments of tropical and subtropical rainforests near the coast. Although it grows in big groups, it is only visible for a short period of time (1-2 months) and is restricted to a certain vegetation type.
Given its wide distribution, with a vast area of potential suitable habitat, its population size is very likely to be too large to qualify this species as threatened under Criteria C or D.
There has been a habitat decline of Brazilian Atlantic forest of over 90% since the 1940s, however rates of decline in northern Brazil and French Guiana are lower. There is a lack of data to be able to calculate precise declines of this habitat type within the last three generations (50 years) of this species, but based on the decline of Brazilian Atlantic forest we precautionarily assume there has been a habitat loss of at least 30% within this part of the species’ range within the past three generations and that this also equates to a population decline of at least 30% within this timeframe. However, taking into account the slower rates of decline in northern Brazil and French Guiana the overall rate of decline will be lower if the species is also found widely in this area. We therefore suspect an overall population decline of around 20% within the past three generations.
Population Trend: Decreasing
This is an ectomycorrhizal species growing on the forest floor, usually occurring in open soil, in dense groups. It is known from tropical and subtropical rainforests.
Real estate speculation is the most constant threat in Brazil, as it grows in hilly areas near the coast, including on Santa Catarina island. In French Guiana, it is recorded from a fragment of primary forest in a national park near Cayenne. The area seems to be the last fully preserved forest on the island of Cayenne, surrounded by rapid urban and demographic growth, and is open for tourism.
Conservation actions include mainly the management and maintenance of the protected areas where the species is found, along with developing conservation plans.
More surveys for this species are needed to better understand its distribution patterns. Also, ecological studies to assess the possible plant hosts of this species is needed.
This species is not utilized.
Cheype, J. L. and Campo, E. (2012). Russula rubropunctatissima Cheype & E. Campo, une nouvelle russule découverte en Guyane française. Bulletin de la Société mycologique de France, 128(1-2): 127-135.
Fundação SOS Pro-Mata Atlântica (2020). SOS Mata Atlântica: https://www.sosma.org.br/
Réserve naturelle Mont Grand Matoury (2020). Mont Grand Matoury Nature Reserve: http://mont-grand-matoury.blogspot.com/
Sá, M.C.A., Coimbra, V.R.M. and Wartchow, F. (2018). Discovery of Russula rubropunctatissima in Brazil. Current Research in Environmental & Applied Mycology (Journal of Fungal Biology). 8(1): 24–29.