Tylopilus rufonigricans

Tylopilus rufonigricans is a bolete fungus in the family Boletaceae found in the Pakaraima Mountains of Guyana. It was described as new to science in 1999 by mycologist Terry Henkel. Its fruit bodies have convex to flattened caps measuring 4–12 cm (1.6–4.7 in) in diameter; caps can form a central depression in age. The cap surface is covered with black scales, while the surface between the scales is initially greenish yellow, and later dull green and eventually greyish black. The flesh turns reddish when it is cut or injured. Tubes on the cap underside are 5–7.5 mm long, and there are 2–3 pores per mm. The stipe measures 6–10 cm (2.4–3.9 in) long by 10–20 mm thick. The spore print is cinnamon brown; spores are smooth and roughly spindle-shaped (subfusiform) with dimensions of 12–15.2 by 3.6–4.8 µm. T. exiguus fruits singly on root mats on trunks of Dicymbe corymbosa. The specific epithet rufonigricans refers to the reddening reaction of the flesh upon injury.[1]

Tylopilus rufonigricans
Scientific classification
Kingdom:
Fungi
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Boletales
Family:
Boletaceae
Genus:
Tylopilus
Species:
T. rufonigricans
Binomial name
Tylopilus rufonigricans
T.W.Henkel (1999)

References
  1. Henkel TW. (1999). "New taxa and distribution records of Tylopilus from Dicymbe forests of Guyana". Mycologia. 91 (4): 655–65. doi:10.2307/3761252. JSTOR 3761252.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.