Russula luteotacta    Rea 



New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Incertae sedis/Russulales/Russulaceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Russulales/Russulaceae  

synonyms: Russula persicina-oligophylla 

edibility : poisonous

photo gallery of  Russula luteotacta
photo gallery of  Russula luteotacta potential confusions with  Russula luteotacta toxicity of Russula luteotacta genus Russula  

The cap is red to rose, discoloured to whitish patches, convex then shortly funnel-shaped; its margin is smooth. The cap surface is smooth, viscid in wet weather.

The stem is white, sometimes washed with pink or red, becoming yellow when pressed, without ring.

The flesh is white, yellowing slowly (>1h) on stem and gills; its taste is acrid; the odour is faint, fruity, of honey or coconut; its texture is grainy (breaking like a chalk stick).

The gills are white, turning yellow strongly when pressed or bruised, slightly but distinctively decurrent, crowded (nb of gills per 90° ~ 24 ). The spore print is white. This species is mycorrhizal. It grows on the ground, under broad-leaved trees, on damp clayey soil or in the mud, on a rather calcareous soil, most of the time with oak.

The fruiting period takes place from July to November.
Dimensions: width of cap approximately 5 cm (between 2 and 8 cm)
  height of stem approximately 5 cm (between 3 and 7 cm)
  thickness of stem (at largest section) approximately 12 mm (between 5 and 20 mm)

Chemical tests : flesh becoming pale orange when in contact with iron sulphate; positive reaction to Gaïac (bright blue);.

Distinctive features : matt cap surface, pinkish red, not easily peeled off; intense yellowing when bruised especially on gills and stem after several hours; in damp soils with broad-leaved trees (preferring oaks)

Russula luteotacta is quite rare and localised in the forest of Rambouillet, and is infrequent, more generally speaking .
here should be the distribution map of Russula luteotacta in the forest of Rambouillet
Above : distribution map of Russula luteotacta in the forest of Rambouillet



page updated on 14/01/18