| name | Amanita crebresulcata |
| name status | nomen acceptum |
| author | Bas |
| english name | "Closely Grooved Ringless Amanita" |
| images |
 1. Amanita crebresulcata, Manaus, Amazonas, Brazil. |
| intro |
This description is taken from the original description of Bas (1978). |
| cap |
The cap of A. crebresulcata is 50 - 75 mm wide, glabrous, campanulate with a rather acute umbo in young specimens, plano-convex to flat or plano-convace with low obtuse umbo in older specimens, with a broad, densely sulcate-striate margin (45 - 65% of the radius). The cap is dark umber to fuscous-sepia at the umbo and somewhat paler away from the umbo. |
| gills |
The gills are free, crowded, narrow, and white. The short gills are truncate and rather scarce. |
| stem |
The stem is up to 120 × 10 mm, tapering upward, hollow, without a bulb, gray, white at the base, often paler at the apex, glabrous, smooth, and exannulate. The saccate volva is membranous, thin, narrowly sheathing, white to cream, and minutely felted. |
| spores |
The spores from the original material measured (8.0-) 8.5 - 10.5 (-11.0) × (6.5-) 7.0 - 8.5 (-9.0) µm and are subglobose to broadly ellipsoid (rarely ellipsoid) and inamyloid. Clamps are absent at the bases of basidia. |
| discussion |
This species belong to a small group described in the discussion of A. dunicola Guzmán. Amanita crebresulcata was originally described from a collection made in secondary rain forest (Manaus, Amazonas, Brazil) by Dr. Rolf Singer.—R. E. Tulloss & L. Possiel |
| brief editors | RET |
| name | Amanita crebresulcata | ||||||||
| author | Bas. 1978. Persoonia 10: 18, figs. 29-32. | ||||||||
| name status | nomen acceptum | ||||||||
| english name | "Closely Grooved Ringless Amanita" | ||||||||
| MycoBank nos. | 308549 | ||||||||
| 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 | INPA; isotype, L | ||||||||
| revisions | Wartchow and Costa Maia. 2007. Hoehnea 34(2): 131-134. | ||||||||
| 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 is derived from the protolog and from (Wartchow and Costa Maia 2007). A recent revision by Wartchow and Costa Maia (2007) is avaible as a PDF. (open) | ||||||||
| basidiospores |
from the protolog: [70/7/4] (8.0-) 8.5 - 10.5 (-11.0) × (6.5-) 7.0 - 8.5 (-9.0) μm, (Q = (1.05-) 1.10 - 1.40; Q = 1.15 - 1.30), colorless, hyaline, thin-walled, smooth, inamyloid, subglobose to broadly ellipsoid to ellipsoid; apiculus [drawn as] subapical, cylindric; contents usually as "one large oil-drop"; color in deposit not recorded. from type study in (Wartchow and Costa Maia 2007): [15/1/1] (7.5-) 8.0 - 10.0 × (6.5-) 7.0 - 8.5 μm, (L = 8.9 μm; W = 7.6 μm; Q = 1.11 - 1.25 (-1.30); Q = 1.17). from Pernambuco material in (Wartchow and Costa Maia 2007): [40/2/1] (7.5-) 8.0 - 10.5 (-11.5) × 7.0 - 9.0 (-9.5) μm, (L' = 9.1 μm; W' = 8.2 μm; Q = (1.06-) 1.10 - 1.26 (-1.33); Q' = 1.20), hyaline, colorless, thin-walled, smooth, inamyloid, subglobose to broadly ellipsoid, infrequently ellipsoid;, apiculus sublateral; contents as large guttule; color in deposit not recorded. | ||||||||
| ecology |
"Fairly common on the ground in mixed secondary growth tropical rain forest, growing near Neea (Nyctaginaceae; in one case mycorrhizal connections definitely established) and Psychotria (Rubiaceae); also present [were] Sapindaceae, Euphorbiaceae, Leguminosae, Palmae, Flacourtiaceae, Sapotaceae, and Violaceae." Wartchow & Costa Maia (2007): "isolated on soil in tropical rain forest." | ||||||||
| material examined |
from protolog: BRAZIL: AMAZONAS—Manaus, ca. INPA [3°05'45" S/ 59°59'16" W], 19.v.1977 R. Singer B9680 (holotype, INPA 66.710; isotype, L), 20.v.1977 R. Singer B9684 (paratype, INPA 66.713), 27.v.1977 R. Singer B9729 (paratype, INPA 66.711), Wartchow and Costa Maia (2007: BRAZIL: AMAZONAS—Manaus, ca. INPA [3°05'45" S/ 59°59'16" W], 19.v.1977 R. Singer B9680 (holotype, INPA 66.710). PERNAMBUCO—Igarassu, Usina São José (Mata dos Macacos), 29.vii.2005, F. Wartchow 27/2005 (URM). | ||||||||
| citations | A recent revision by Wartchow and Costa Maia (2007) is avaible as a PDF. (open)—R. E. Tulloss and F. Wartchow | ||||||||
| editors | RET | ||||||||
Information to support the viewer in reading the content of "technical" tabs can be found here.
| name | Amanita crebresulcata |
| bottom links | [ Keys & Checklists ] |
| name | Amanita crebresulcata |
| bottom links | [ Keys & Checklists ] |
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.
In the case of a taxon page, image credits are on the 'image' tab.