name | Amanita sp-CHI01 |
name status | cryptonomen temporarium |
author | Tulloss |
images | |
intro | This taxon was collected by Joseph Laferrière during ecological and ethnomycological studies in the state of Chihuahua, Mexico. RET has seen a draft description (Ms.) of Laferriere and two specimens from a large collection that he distributed over several herbaria. The following is based in part on the Ms. |
cap | The cap is 100 - 180 mm wide, white to cream, and becomes pale tan with age [per photos], planoconvex to planar at maturity, with low broad umbo at maturity or in age, subviscid when moist; context white, ??, thinning ?? to margin, not changing when cut or bruised; margin short striate (??R), nonappendiculate; universal veil absent. |
gills | The gills are free, crowded, pale yellow in mass and in side view. The short gills are truncate to subtruncate or rounded truncate, of diverse lengths, plentiful, and unevenly distributed. |
stem | The hollow stem of this mushroom is 120 - 180 × 15± mm, white or whitish, narrows upward, and flares at the very top. The ring is placed high on the stem and is thin, membranous, persistent, pale yellow at first, and becomes darker and slightly brownish yellow with age and then collapses on the stem. The sack-like volva is lobed, white, and has a limb reaching up to 30 - 75 mm from the bottom of the sack. |
odor/taste | This mushroom's odor and taste are not recorded. |
spores | The spores measure (7.5-) 9.2 - 12.8 (-15.0) × (5.8-) 6.5 - 8.2 (-9.0) μm and are predominantly broadly ellipsoid to ellipsoid (occasionally elongate, infrequently subglobose) and inamyloid. Clamps are found at bases of basidia. |
discussion |
This species is known from the Sierra Madre Occidental in the state of Chihuahua, Mexico, where it was collected in pine-oak (Pinus-Quercus) forest. In the region where it was collected it is a comestible species enjoyed by the local people. Its macroscopic characteristics place this mushroom in Amanita [sect. Caesareae] stirps Caesarea along with such species as A. caesarea of Europe and the Mexican species A. basii.—R. E. Tulloss |
brief editors | RET |
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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. Combining more data into a single data set is non-optimal because it obscures observer differences (which may be valuable for instructional purposes, for example) and may obscure instances in which a single collection inadvertently contains a mixture of taxa.