| name | Amanita sp-N47 |
| name status | cryptonomen temporarium |
| author | Tulloss |
| images |
  1. Amanita sp-N47, older specimens showing bruising, Tolland Co., Connecticut, U.S.A.  2. Amanita sp-N47, Middlesex Co., Connecticut, U.S.A. |
| intro | This mushroom suggests small specimens of Amanita flavorubens and sometimes has a fruity or floral odor. |
| cap | For the moment, please see the "technical" tab. |
| gills | For the moment, please see the "technical" tab. |
| stem | For the moment, please see the "technical" tab. |
| odor/taste | Collections of this species have not been tasted. The odor has been reported to be lacking in one collection but to be like fruit or "flowery soap" in others. |
| spores | The spores of this species measure (6.5-) 7.0 - 9.4 (-10.5) × (3.8-) 4.2 - 6.1 (-6.5) μm, are broadly ellipsoid to ellipsoid to elongate, and amyloid. Clamps are probably not present at bases of basidia. |
| discussion | At present we know this species from only three sites in eastern North America—in eastern Connecticut and in the New Jersey Pine Barrens. Pine, Oak, and Canadian Hemlock have been reported from the collecting sites. In the same region, the non-white, more or less rubescent taxa include A. amerirubescens, A. flavorubens, and A. sp-36.—R. E. Tulloss and C. Rodríguez Caycedo |
| brief editors | RET |
| name | Amanita sp-N47 | ||||||||
| name status | cryptonomen temporarium | ||||||||
| GenBank nos. |
Due to delays in data processing at GenBank, some accession numbers may lead to dead pages.
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| intro |
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 is based on original research of R. E. Tulloss and C. Rodríguez Caycedo. | ||||||||
| pileus | 28 - 57 mm wide, with marginal zone citrin yellow or tannish yellow (near 10YR 8/8) or pale orange-yellow to grayish orange-yellow (4A3, 4B4) becoming tan or grayish yellow (10YR 8/4), intermediate between margin and disc grayish tan to light grayish tan (5D5, 10YR 6/4, near 10YR 6/8, 10YR 7/4), with disc orange-brown (6D5-6) becoming brownish yellow or yellowish brown (10YR 5-6/6), sometimes virgate near margin in age, at first hemispheric with margin incurved, becoming convex to plano-convex and eventually broadly concave, often with small central umbilicus, dry, shiny when partially dryed in situ; context off-white to white, yellow below pileipellis at first (becoming whitish below pileipellis with age), sometimes with reddish line above lamellae (bruising/staining reaction?), 1.5 - 3.5 mm thick over stipe, thinning evenly to within 2.5 mm or less of margin (young material), thence, membranous to margin; margin nonstriate (except in old material drying in situ), nonappendiculate; universal veil in flat patches and irregular warts of varying size, canary yellow to pale yellow, becoming very pale grayish tan to light grayish tan (10YR 7-8/2-3)on exposure, submembranous to submembranous-felted, detersile. | ||||||||
| lamellae | narrowly adnate, sometimes with decurrent line on apparent "annular sheath" that remains when partial veil is pulled away, close to crowded, white to sordid white to pale yellow-cream in mass, pale off-white to yellowish white to yellow in side view, sometimes with wine-red spots (apparent bruising reaction?), 2 - 4.5 mm broad, broadest at about mid-length; lamellulae truncate to subtruncate to rounded truncate to attenuate, unevenly distributed, of diverse lengths, plentiful. | ||||||||
| stipe | 32 - 72 × 2.5 - 8 mm, white to off-white to pale yellow-white to pale yellow, sometimes pale yellow above partial veil, bruising pinkish to pink-brick to red-brown to sordid from handling, cylindric or narrowing upward, flaring slightly at apex, minutely flocculose near apex, fibrillose-squamulose in faint (sometimes yellowish) snakeskin (zebrature) pattern, longitudinally striatulate; bulb ovoid to clavate, 6 - 13 × 7 - 11 mm, dog-legged on several specimens; context stuffed to hollow, white to cream, bruising??, with central cylinder 1 - 2 mm wide, with stuffing material comprising densely packed longitudinally oriented fibrils; larval tunnels concolorous; partial veil superior to submedian, white or yellow above and below, becoming gray-brown, smooth below, faintly striate above, membranous, thin, tearing, sometimes left in proportionately large pieces on pileus margin; universal veil as small warts or small patches or thin irregular line (possible remnant of limbus internus) on lower stipe and basal bulb, yellow, detersile. | ||||||||
| odor/taste | Odor absent or floral or fruit-like or like "flowery soap." Tasteless. | ||||||||
| macrochemical tests |
none recorded. | ||||||||
| lamella edge tissue | sterile. | ||||||||
| basidiospores | [140/7/3] (6.5-) 7.0 - 9.4 (-10.5) × (3.8-) 4.2 - 6.1 (-6.5) μm, (L = 7.6 - 8.7 μm; L' = 8.0 μm; W = 4.5 - 5.6 μm; W' = 5.1 μm; Q = (1.27-) 1.36 - 1.84 (-2.12); Q = 1.52 - 1.69; Q' = 1.57), hyaline, colorless, smooth, thin-walled, amyloid, broadly ellipsoid to ellipsoid to elongate, adaxially flattened; apiculus sublateral, cylindric; contents monoguttulate with or without additional granules; ?? in deposit. | ||||||||
| ecology | Gregarious. Connecticut: In sandy loam or in dark loam of mixed forest including Pinus, Quercus, and Tsuga canadensis. New Jersey: In deep sandy soil of P. rigida-Quercus barrens. | ||||||||
| material examined | U.S.A.: CONNECTICUT—Middlesex Co. - E. Haddam, Devil's Hopyard St. Pk. [41°28’32” N/ 72°20’25” W, 72 m], 4.ix.2011 Josh Hutchins s.n. (RET 489-3); Salmon River St. For. (West) [41°32’58” N/ 72°27’01” W, 21 m], 3.ix.2011 Paula DeSanto s.n. [Tulloss 9-3-11-K] (RET 490-7). Tolland Co. - Hebron, The Hemlocks Nature Educ. Ctr. [41°37’11” N/ 72°23’22” W, 145-160 m], 24.ix.1999 "F.R." s.n. [Tulloss 9-24-99-D] (RET 301-5). NEW JERSEY—Burlington Co. - ca. Chatsworth, Franklin Parker Preserve, 19.viii.2011 Nina & John Burghardt s.n. (RET 486-10). | ||||||||
| discussion |
Most specimens examined have had a distinct, small umbilicus in the center of the pileus. The following figure provides comparison of the sporographs of the present species with three somewhat similarly colored rubescent taxa from the same region—A. amerirubescens, A. flavorubens, and A. sp-F14: The greatest similarity in spore size and shape is with another "code numbered" species with rather similar pileus pigmentation—A. sp-F14—of which no material has been described with an umbilicus. Further comparison work on the present species and A. sp-F14 is required. In addition, a possible species with no report of reddening flesh, but similar pigmentation is A. sp-36. A comparison of the sporograph of the latter with those of A. sp-F14 and the present species is provided in the following figure. Because A. sp-F14 is possibly identifiable as A. fraterna, the data from Jenkins' type study of the latter is also included in the comparison: more...t.b.d. | ||||||||
| citations | Note: gelasinos (Gr., "dimple")—R. E. Tulloss and C. Rodríguez Caycedo | ||||||||
| editors | RET | ||||||||
Information to support the viewer in reading the content of "technical" tabs can be found here.
Spore data sets and their composite
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.
Text and User-Generated Sporographs are published under the Creative Commons License.
All other images are © 2011, Rodham E. Tulloss unless otherwise indicated in context.
In the case of a taxon page, image credits are on the 'image' tab.