bilateral; wcs = ?? µm; central stratum containing plentiful fusiform to clavate to ovoid intercalary cells up to 11.5 µm (rarely to 17.5 µm) wide; subhymenial base with plentiful inflated cells [elongate to narrowly clavate (up to 51 × 17.5 µm) or globose to subglobose to ellipsoid to ovoid to broadly clavate (up to 48 × 32 µm), often intercalary, with walls often slightly thickened, often penetrating subhymenium] and plentiful filamentous, undifferentiated hyphae; filamentous, undifferentiated hyphae 1.8 - 7.8 µm wide, frequently branching in subhymenial base, often constricted at septa; terminal, divergent, inflated cells not uncommon, pyriform, (e.g., 37 × 23 µm), with walls slightly thickened; vascular hyphae not observed; clamps not observed.
wst-near = 45 - 50 µm; wst-far = 70 - 75 µm; usually with clearly branching structure, locally cellular (pseudoparenchymatous); with 2 - 3 cells between bases of longest and shortest basidia/-oles in given region, with 2 - 3 cells between bases of longest basidia/-oles and central stratum, with basidia arising commonly from partially inflated and uninflated hyphal segments and from obclavate to branched to clavate to subglobose inflated cells (almost always with major diameter perpendicular to central stratum).
52 - 69 × 13.5 - 16.8 µm, dominantly 4-, occasionally 2-sterigmate, with sterigmata up to 7.0 × 3.0 µm; clamps not observed.
Costa Rica: At 2540 m elev. With Quercus seemannii.
COSTA RICA: CARTAGO—Ctn. Unkn. - ca. Cañon, E of Interam. Hwy., at La Esperanza del Guarco [9°41’1” N/ 83°52’43” W, 2505 m], 26.xi.1993 R. E. Halling, M. Mata, L. Umaña & A. E. Franco-M. [Franco-M. 1160] (NY).
—R. E. Tulloss
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Tulloss & Halling
Spore data for collections provisionally identified as: Amanita sp-CR16 Tulloss & Halling
Each spore data set is intended to comprise a set of measurements from a single specimen made by a single observer;
and explanations prepared for this site talk about specimen-observer pairs associated with each data set.
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a single collection inadvertently contains a mixture of taxa.