| name | Amanita roanokensis |
| name status | nomen acceptum |
| author | Coker |
| english name | "Roanoke Limbed Lepidella" |
| images |
 1. Amanita roanokensis, eastern Texas, U.S.A.  2. Amanita roanokensis, eastern Texas, U.S.A. |
| intro |
Amanita roanokensis has very narrow spores, which commonly may be more than 4 times as long as they are wide. |
| cap |
The cap is starkly white and 50 - 120 mm wide, convex to plano-convex, sometimes with a slight umbo, white, cream in the center, probably subviscid, with a nonsulcate, appendiculate margin. The cap is scattered with rather small to large, thin, flat, white, submembranous patches of volva. |
| gills |
The gills are white, adnate or adnexed, and moderately crowded to crowded to rather distant, narrow to moderately broad, and white to pallid. The short gills are obliquely truncate to attenuate. |
| stem |
The usually exannulate stipe is 70 - 140 × 7 - 20 mm and, subcylindrical or attenuate upward, solid, white, and (at first) flocculose; at the stipe base is a spindle-shaped, somewhat rooting bulb. A weak annulus may be noticed in young fruiting bodies. There is a distinct limbate volva at the top of the stipe's basal bulb, but this may be hard to see when it collapses on the stipe. |
| spores |
The spores measure (12.0-) 12.8 - 17.1 (-19.5) × 3.6 - 4.9 (-5.0) µm and are amyloid and cylindrical to bacilliform. Clamps are not found at bases of basidia. |
| discussion |
Amanita roanokensis has an odor that is pleasant or "like cooking meat" at first, but later it is described as "like carrion" or "old bones." This species is often associated with oak and pine. It is moderately common in the southern part of the sandy Atlantic coastal plain of the U.S. and along the U.S. Gulf Coast. Bas placed the present species in his stirps Roanokensis along with A. inodora (Murrill) Bas and A. alliacea (Murrill) Murrill. For a brief statement concerning the related stirpes of Amanita subsection Limbatulae, see A. limbatula Bas.—R. E. Tulloss |
| brief editors | RET |
| name | Amanita roanokensis | ||||||||
| author | Coker. 1927. J. Elisha Mitchell Scient. Soc. 47: 141, pl. 2 (fig. 6). | ||||||||
| name status | nomen acceptum | ||||||||
| english name | "Roanoke Limbed Lepidella" | ||||||||
| synonyms |
≡Venenarius roanokensis (Coker) Murrill. 1948. Lloydia 11: 103.
≡Amidella peckiana f. roanokensis (Coker) E.-J. Gilbert. 1940. Iconogr. Mycol. (Milan) 27, suppl. (1): 77.
=Venenarius watsonianus Murrill. 1945c ["1944"]. Lloydia 7: 316.
≡Amanita watsoniana (Murrill) Murrill. 1945c ["1944"]. Lloydia 7: 327. The editors of this site owe a great debt to Dr. Cornelis Bas whose famous cigar box files of Amanita nomenclatural information gathered over three or more decades were made available to RET for computerization and make up the lion's share of the nomenclatural information presented on this site. | ||||||||
| MycoBank nos. | 276620, 345969, 291952, 284086, 291963 | ||||||||
| GenBank nos. |
Due to delays in data processing at GenBank, some accession numbers may lead to dead pages.
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| holotypes |
A. roanokensis—NCU. V. watsonianus—FLAS. | ||||||||
| revisions |
Bas. 1969. Persoonia 5: 550, figs. 361-368. Tulloss, here. | ||||||||
| basidiospores |
Bas (1969): [50/3/3] (11.5-) 12.5 - 15.0 × 3.5 - 5.0 μm, (Q = 2.70 - 3.90; Q = 3.20 - 3.40), yellowish, thin-walled, amyloid, cylindric to bacilliform, "sometimes slightly bent at base or slightly constricted in middle," apiculus not described; contents refractive, granular; color in deposit not recorded. "[S]ome (about 1% in types of A. roanokensis and A. watsoniana, about 50% in Murrill F 10375) with amyloid, granular warts, especially on apical half" (Bas 1969: figs. 366, 368). from type study of Amanita watsoniana by Jenkins (1979): [-/-/1] 11.3 - 14.1 (-15.6) × 3.9 - 4.7 μm, (Q = 2.90 - 4.00; Q' = 3.38), hyaline, thin-walled, amyloid, cylindric to bacilliform, often adaxially flattened; apiculus sublateral, very short, truncate; contents guttulate; color in deposit not recorded. composite of data from all material revised by RET: [40/2/2] (12.0-) 12.8 - 17.1 (-19.5) × 3.6 - 4.9 (-5.0) μm, (L = 14.4 - 14.7 μm; L' = 14.6 μm; W = 4.1 - 4.4 μm; W' = 4.2 μm; Q = (2.62-) 2.73 - 4.08 (-4.67); Q = 3.32 - 3.70; Q' = 3.51), hyaline, colorless, smooth, thin-walled, amyloid, cylindric to bacilliform, occasionally subsigmoid or subsinuate; apiculus sublateral, proportionately small; contents ??; ?? in deposit. | ||||||||
| ecology |
Bas (1969): Terrestrial in dry, mixed woods. Solitary. Florida: On humus. South Carolina: In flood plain in mixed forest containing Pinus and Quercus. | ||||||||
| material examined |
Bas (1969): U.S.A.:
FLORIDA—Alachua Co. - Gainesville, 1.vii.1942 W. A. Murrill F 10357 (FLAS). Columbia Co. - Camp O'Leno, 19.x.1941 W. A. Murrill F21875 (holotype of Venenarius watsonianus, FLAS).
NORTH CAROLINA—Dare Co. - Roanoke Isl., ca. Fort Raleigh, 17.ix.1927 W. C. Coker & Braxton 8255 (holotype of A. roanokensis, NCU). from type study of Amanita watsoniana by Jenkins (1979): U.S.A.: FLORIDA— Columbia Co. - Camp O'leno, 19.x.1941 W. A. Murrill F 21875 (holotype, FLAS). U.S.A.: FLORIDA—Brevard Co. - Melbourne, 10.xi.1984 Aaron Norarevian & E. R. Yetter 4 [Tulloss 11-10-84-#4] (RET 233-6). Duval Co. - Jacksonville, 9.xi.1984 A. Norarevian & E. R. Yetter 8 [Tulloss 11-9-84-#8] (RET 234-5). Seminole Co. - Altamonte Springs, 22.vii.1958 Paul O. Schallert 7-428 (K). NORTH CAROLINA—Dare Co. - Hatteras Isl., N of Frisco, 16.vii.1981 R. E. Tulloss 7-16-81-C (RET 169-9), -D (RET 170-3), 17.vii.1981 D. C. & R. E. Tulloss 7-17-81-B (RET 169-8), -C (RET 170-6), -D (RET 169-6), -E (RET 170-2), -F (RET 170-4), -H (RET 169-7), -I (RET 170-5). SOUTH CAROLINA—Greeneville Co. - Greer, ca. border with Spartanburg Co. [34°43'30.44" N/ 82°21'32.13" W], 14.vii.2000 M. A. & R. E. Tulloss 7-14-00-A (RET 313-7). TEXAS—Hardin Co. - 6.5 km W of Silsbee, Roy Larson Sandlyand Sanctuary, 10.vi.2000 D. Pruden s.n. [Tulloss 6-10-00-J] (RET 312-3). | ||||||||
| citations | —R. E. Tulloss | ||||||||
| editors | RET | ||||||||
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Spore data sets and their composite
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