| name |
Amanita
hayalyuy |
| author |
D. Arora & G. H. Shepard. in G. H. Shepard et al. 2008. Econ. Bot. 62(3): 437-470. |
| name status |
nomen acceptum |
| english name |
"Mayan Slender Caesar" |
| etymology |
hayal, "slender" + yuy, "Amanita" (particularly of the Caesareae). The epithet is a compound derived from the phrase "hayal yuy"—a name for this species in "one Tzotzil Maya dialect" per the protolog. |
| MycoBank nos. |
543106 |
| GenBank nos. |
Due to delays in data processing at GenBank, some accession numbers may lead to unreleased (pending) pages.
These pages will eventually be made live, so try again later.
|
| holotypes |
UC 1860232 |
| intro |
The following text may make multiple use of each data field.
The field may contain magenta text presenting data from a type study and/or revision of other original material cited in the protolog of the present taxon. Macroscopic descriptions in magenta are a combination of data from the protolog and additional observations made on the exiccata during revision of the cited original material.
The same field may also contain black text, which is data from a revision of the present
taxon (including non-type material and/or material not cited in the protolog).
Paragraphs of black text will be labeled if further subdivision of this text is appropriate.
Olive text indicates a specimen that has not been thoroughly examined (for example, for microscopic details) and marks other places in the text where data is missing or uncertain.
The following material not directly from the protolog of the present taxon and not cited as the work of another researcher is based on original research of R. E. Tulloss. |
| pileus |
protolog: 80 – 180 (-250) mm wide, typically golden-brown or bright yellow-brown as
seen from distance, actually darker brown
(or at times olive or reddish) over disc, much "brighter" in area of mid-radius and "paler still" (yellow) at margin, convex becoming broadly convex to plane or with slightly uplifted and often splitting margin, with low, broad umbo [rather pronounced in illustrations] at maturity, slightly viscid or tacky when moist; context whitish to pale yellow, very thin at margin, not staining appreciably when cut; margin sulcate-striate, nonappendiculate, with striations typically 10–30 mm long; universal veil usually absent, occasionally as thin, white, approximately central patch. |
| lamellae |
protolog: adnexed or free to narrowly adnate, close, off-white to cream-colored or pale yellow (not bright yellow); lamellulae truncate. |
| stipe |
protolog: 150 – 300 × 10 - 15 (-20) mm, subcylindric or narrowing upward slightly; with yellowish or cream-colored ground when fresh, frequently decorated below annulus with darker orangish-brown to slightly reddish felty-fibrillose layer (remnants of limbus internus) frequently breaking into scaly zigzagging zones and often discoloring with age or handling (becoming duller and browner); context whitish to pale yellowish or cream-colored,
hollow throughout or stuffed with cottony white material; partial veil thin,
superior, skirt-like, yellowish, striate above, easily obliterated by handling; universal veil as membranous saccate volva, white, ample, sheathing, lobed, attached at very base of stipe, typically 20 – 50 mm tall, with basal part of limbus internus placed near stipe base, but not always clearly distinguishable. |
| odor/taste |
protolog: Odor mild, not distinctive. Taste not recorded. |
macrochemical
tests |
none recorded. |
| pileipellis |
protolog: as trichodermium, gelatinized to unspecified depth at surface. |
| pileus context |
not reported. |
| lamella trama |
protolog: bilateral. |
| subhymenium |
protolog: as thin layer of inflated cells, 1-2 cells thick. |
| basidia |
protolog: mostly 4-sterigmate; clamps present. |
| universal veil |
protolog: mainly comprising filamentous
hyphae moderately branched, interwoven. Limbus internus remnants on stipe surface: with large, swollen cells. |
| stipe context |
not reported. |
| partial veil |
not reported. |
| lamella edge tissue |
not reported. |
| basidiospores |
from protolog: [30/-/-] (8.6-) 9.3 – 11.7 (-14) × 6.2 – 7.8 (-9.3) μm, (Q = 1.29 – 1.69; Q' = 1.42); hyaline, smooth, inamyloid, broadly ellipsoid to elongate, occasionally broadly ellipsoid; apiculus present; contents not recorded; white in deposit.
RET: [30/1/1] (8.2-) 8.5 - 12.5 (-16.0) × (6.0-) 6.5 - 8.5 (-9.1) μm, (L = 10.1 μm; L' = ?? μm; W = 7.4 μm; W' = ?? μm;
Q = 1.21 - 1.62 (-1.83); Q = 1.37; Q' = ??), hyaline, colorless, smooth, thin-walled, inamyloid, broadly ellipsoid to ellipsoid, occasionally elongate, adaxially flattened; apiculus sublateral, cylindric; contents mono- to multiguttulate; color in fresh deposit not recorded. |
| ecology |
protolog: Solitary or in small groups. At 2000 m elev. or higher. Associated with Quercus. |
| material examined |
protolog: MEXICO: CHIAPAS—Chamula [16°47'03" N/ 92°41'23" W, 2274 m], bought in market of San
Cristóbal de las Casas, vii market collector s.n. (holotype, UC 1860232).
MEXICO: CHIAPAS—unkn. loc., 26.vi.1997 Virgil E. Alderson s.n. (BPI?, spore print only). |
| discussion |
The photograph of the type collection included in the protolog shows a rather battered specimen that was probably collected more than a day before it was purchased in the market—or else it was an old specimen when it was collected.
A comparison of the sporographs of the present species, A. garabitoana, and A. arkansana follows:
 |
| citations |
—R. E. Tulloss |
| editors |
RET |
|
Spore data sets and their composite