Pileo 3-7'5 cm convexo, mox expanso, specie fere hygrophana, sed non striato, margine tenui, pulchre ac vivide rufo, dein sicco fulvo, cute uda levi, sicca subtiliter radiatim fibrillosa. Stipite 3-5-9 cm X 4-Io mm, imo magis minusve angustato, saepe flexuoso vel torto, etiam compresso sulcato, pleno, dein cavo, summo e rufulo luteo, imo mox e fulvo rufo, summo pruinoso, alibi fibrilloso; cortina non visa. Carne parum crassa, in pileo fragili, in stipite fibrosa, luteola; odore debili, jucundiore; sapore amaro. Lamellis stipatis, tenuibus, angustis (2-5-6 mm), rotundatis-adnatis, linearibus, antice acutis, intense e flavis rufis, acie flava.-Sporis pruniformibus, 8-Io x 4'5-5'7 ptm, verrucosis, nec cyanophilis, nec dextrinoideis. Basidiis 26-30 x 6.5-7 /m, tetrasporis. Cystidiolis in lateribus raris, in acie plurimis, utriformibus, summis non capitatis, 23-28 x 6-5-IO [Lm. Cute ex hyphis (5-8)-14 [m latis constante, hyphis gracilioribus mixtis (3-4 ~m), incrustatis. -In Pinis Corsicis (Pinus nigra Arn. var. maritima (Ait.) Melville & P. mesogeensis) .-Typus: Herb. Romagnesi 72.315 (PC).