Fungalpedia – Note 76 Laeticutis
Citation if using this entry: Fallahi et al. (in prep). New genera in 2010-2011. Mycosphere.
Laeticutis was established by Audet (2010) in Russulales incertae sedis being segregated from Scutiger Paulet based on morphological characters and LSU rRNA sequence data. The genus is a monotypic ectomycorrhizal fungus, that accommodates the single species Laeticutis cristata (Schaeff.) Audet (synonyms: Albatrellus cristatus (Schaeff.) Kotl. & Pouzar). Laeticutis cristata has variable colors (pale olive-green to olive-brown, sometimes yellow in the center) and an uncharacteristic odor with a mild taste. It has a rimose or splitting, thick or thinner, smooth to cracked cap with central to the eccentric stipe. The context is single-layered, and white. The hymenophore is porous, white to olive. It has a monomitic hyphal system in the context and sometimes in the hymenophore. Basidia are long clavate. Spores are ellipsoidal to sub-spheroidal, thin-walled to thickened, hyaline, non to slightly amyloid, and whitish. The context and hymenophore turn a cherry‑red color in potassium hydroxide (KOH) and a red-violet color in sulfuric acid (H2SO4) (Audet 2010).
Type species: Laeticutis cristata (Schaeff.) Audet
Fig 1. Basidiomata of Laeticutis cristata (redrawn from the https://www.fungikingdom.net website)
Fig 2: Laeticutis cristata (redrawn from Sesli. 1998). a Inflated hyphal ends in the hymenium. b, c Basidia. d Spores. Scale bars: a-d = 10 µm.
Audet S. 2010- Essai de découpage systématique du genre Scutiger (Basidiomycota): Albatrellopsis, Albatrellus, Polyporoletus, Scutiger et description de six nouveaux genres. Mycotaxon 111, 431-464. https://www.mykoweb.com/CAF/PDF/Essai%20de%20d%C3%A9coupage%20syst%C3%A9matique%20du%20genre%20Scutiger.pdf
Sesli E.1998- Ten new records of Macrofungi for Turkey. Turkish Journal of Botany 22,43-50.
Maryam Fallahi, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.
(Edited by Kevin D. Hyde & Ishika Bera))