Clavicybe

Clavicybe Harmaja 2002, in Harmaja, Karstenia 42(2): 39 (2002).

Current name: Ampulloclitocybe Redhead, Lutzoni, Moncalvo & Vilgalys, Mycotaxon 83: 36 (2002)

Diagnosis: Agaricales; habitus of basidiocarp as in Clitocybe. Veil completely absent. Pileus from convex to plane or somewhat depressed, not hygrophanous, brown or grey-brown; surface dry. Stipe usually clavate, concolorous with pileus; surface dry. Lamellae decurrent, whitish. Odour sweetish or indistinct. Taste mild. Flesh hygrophanous; cap flesh dries from the periphery towards the centre. Spores pure white in fresh deposit (pale yellow in age), not sticking to tetrads or with collapsed walls in mounts made of dry gills, fairly large, a proportion of them always broadly fusiform; uninucleate (Kühner 1945); wall without germ-pore, hyaline, inamyloid, cyanophobic (Singer 1972, Harrnaja 1974, 1976, 1979), rugulose under the electron microscope at least in the type species (Pegler & Young 1971, Bigelow 1981); contents with one distinct oil drop; hilar appendix large, ca. 0.9-1.1 x 0.7-0.9 µm. Cystidia of any kind absent. Pileus cortex made of epicutis and subcutis of subparallel hyphae; pigment essentially situated within cells of epicutis. Hymenophoral trama irregular, i.e., composed of interwoven hyphae (textura intricata). Clamp connection abundant everywhere in the basidiocarp. Dried pileus, stipe, lamellae, basal mycelium and flesh and of the type species do not exhibit fluorescence but retain their colours under ultraviolet light (with wave-lengths 254 nm and 366 nm), excepting the tinges of the three first-named structures which become slightly deeper. Saprophytes which decay plant litter, especially needles and leaves, sometimes herbaceous litter or woody substrates.

Index Fungorum Number: IF28730

Type Species: Clavicybe clavipes (Pers.) Harmaja 2002

Species:

Clavicybe avellaneoalba (Murrill) Harmaja 2002

Clavicybe clavipes (Pers.) Harmaja 2002

Clavicybe squamulosoides (P.D. Orton) Harmaja 2002

References:

Harmaja, H. (1974). A revision of the generic limit between Clitocybe and Lepista. Karstenia, 14, 82-92.

Harmaja, H. (1976). A further revision of the generic limit between Lepista and Clitocybe. Karstenia, 15, 13-15.

Harmaja, H. (1979). Type studies in Clitocybe 3. Karstenia, 19, 22-24.

Harmaja, H. (2002). Amylolepiota, Clavicybe and Cystodermella, new genera of the Agaricales. Karstenia, 42(2), 39-48.

Kühner, R. (1945). Le problème de la filiation des Agaricales à la lumière de nouvelles observations d'ordre cytologique sur les Agaricales leucosporées. Publications de la Société Linnéenne de Lyon, 14(7), 160-168.