Zelleromyces ravenelii (Berk. & M.A. Curtis) Singer & A.H. Sm.
Family: Russulaceae
Zelleromyces ravenelii image
Brody Betsch  
Singer R, Smith AH. 1960. Studies on secotiaceous fungi. IX. The astrogastraceous series. Memoirs of the Torrey Botanical Club 21: 20.

Zelleromyces ravenelii (B. & C.) Singer & Smith comb. nov.
Octaviania stephensii var. ravenelii Berk. & Curt. in Tulasne, Fung. Hypog. xvii. 1851.
Hydnangium stephensii var. ravenelii Berkeley, Grevillea 2:33. 1873.
Octavania ravenelii Lloyd, Myc. Notes 67:1140. 1922.
Arcangeliella ravenelii (B. & C.) Dodge, Ann. Mo. Bot. Gard. 18:463. 1931.

Gastrocarps 25-40 mm in diameter, subspherical to pyriform, drying light fawn to nearly pallid; sterile base not prominent; columella slender, percurrent; with laticiferous ducts which exude a white aromatic latex Spores 12-16(17) µm, globose or nearly so, ornamented, blackish violet under oil-immersion in Melzer's reagent because of a heavy ornamentation in the form of a small-meshed reticulum of ridges about 1 µm wide connected by finer amyloid lines or chains of granules, main ridges 1-1.5 µm high and secondaries about 0.25 µm high; sterigmal appendage inconspicuous.

Hymenium. Basidia 2-spored, a few 1-spored with an elongated sterigma or intermediate (one long and one aborted), basidia 36-45 x 10-13 µm sterigmata on two-spored basidia 9-12 µm long and 2 µm wide at base, conic. Basidioles numerous. Cystidia 48-60 x 10-15 µm, clavate with an apical mucro but mostly larger than 1-spored basidia.

Hyphal layers. Subhymenium cellular but not from sphaerocysts, merely of short cells more or less isodiametric because of numerous cross walls; hyphae of the tramal plates interwoven and hyaline with scattered sphaerocysts. Peridium a thick (about 200 µm) layer of hyaline subgelatinous hyphae 4-11 µm in diam. with laticiferous hyphae interspersed, covering the surface sparsely are small dermatocystidia 18-26 x 3-7 µm, these are irregular in outline. Clamp connections absent.

Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Brody Betsch  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden  
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
Zelleromyces ravenelii image
The New York Botanical Garden