name | Amanita curta |
name status | nomen acceptum |
author | (Cooke & Massee) E.-J. Gilbert |
english name | "Brick-Stipe Amidella" |
images | |
intro | Very little is known about this species. This description is largely based on the original description and that of Reid (1980). |
cap | The cap of Amanita curta is 50 to 65 mm wide, convex at first, then flattened, ochraceous-white, even, and smooth. The margin was appendiculate in the only known collection. |
gills | The gills are free, rather distant, narrow, and white. |
stem | The stem is short (no more than 25 mm long), solid, bulbous, brick-red (or terracotta), and smooth. The ring in the one known specimen was left in pieces on the edge of the cap. An apparently membranous volva encircles the margin of the stem's bulb. The bottom of the bulb is said to bear bundles of hyphae with the appearance of "rootlets." |
odor/taste | Odor and taste were not recorded for this species. |
spores | The spores of A. curta measure (9.0-) 10.0 - 14.5 x 5.0 - 6.0 µm according to Reid and are elongate to cylindric (infrequently ellipsoid, infrequently bacilliform) and strongly amyloid. RET's spore data are 10.8 - 14.5 (-17.7) x (5.0-) 5.2 - 7.5 (-8.4) µm. |
discussion | This species was originally described from the state of Victoria, Australia; Reid knew it only from the type locality. From the current state of the type (covered with sand), one can assume that it occurred in sandy soil. I am not certain that this species is properly assigned to section Amidella. The base of the stipe should be investigated to see if the volva is limbate or saccate and whether a true bulb is present. If the latter were the case, then placement in sect. Lepidella would be a possibility.—R. E. Tulloss |
brief editors | RET |
name | Amanita curta | ||||||||
author | (Cooke & Massee) E.-J. Gilbert. 1941. Iconogr. Mycol. (Milan) 27, suppl. (2): 295. | ||||||||
name status | nomen acceptum | ||||||||
english name | "Brick-Stipe Amidella" | ||||||||
synonyms |
≡Agaricus curtus Cooke & Massee. 1888. Grevillea 16 (fasc. 79): 72.
≡Amanitopsis curta (Cooke & Massee) Sacc. 1891a. Syll. Fung. 9: 3.
≡Vaginata curta (Cooke & Massee) Kuntze. 1898. Rev. Gen. Plant. 3(2): 539. 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. | 277516, 134262, 296072 | ||||||||
GenBank nos. |
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holotypes | K | ||||||||
type studies |
Reid. 1980. Austral. J. Bot., Suppl. Ser. 8: 21, figs. 7, 45. Tulloss, herein. | ||||||||
selected illustrations | Cooke. 1890. Grevillea 18 (fasc. 88, following p. 360): pl. 3 (fig. A). | ||||||||
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 original description is a brief Latin diagnosis as follows: "Pileo convexo, explanato, ochraceoalbo, laevi, glabro, margine velo appendiculato, stipite brevi, solido, bulboso, testaceo, glabro, volva ampla, circumscissa marginato, deorsum fibrilloso-radicato; lamellis liberis, remotis, subdistantibus, angustis, albis, sporis ellipticis, 19 - 22 × 10 μm. "On ground. Mordialloc, Victoria." [Communicated by Baron F. von Mueller.] The basis of the following description is derived from the protolog and (Reid 1980). Partial data on microscopic anatomy are from a (regrettably) time-limited study of the type by R. E. Tulloss. | ||||||||
pileus | from protolog: 51 - 64 mm wide, ochraceus white, convex, becoming flattened, even, smooth; context not described: margin nonstriate, appendiculate; universal veil absent. | ||||||||
lamellae | from protolog: free-remote, rather distant, white, narrow; lamellulae not described. | ||||||||
stipe |
from protolog: ca. 25 mm long, brick-red, smooth; context not described; bulb subglobose(?), with rhizoids on base; partial veil appendiculate from pileus margin in holotype; universal veil as raised margin or limb on stipe bulb. from Reid (1980): "...bulb surmounted by a narrow limb of volval tissue up to 5 mm high...." | ||||||||
odor/taste | not recorded. | ||||||||
macrochemical tests |
none recorded. | ||||||||
pileipellis | not described. | ||||||||
pileus context | not described. | ||||||||
lamella trama | not described. | ||||||||
subhymenium | not described. | ||||||||
basidia | RET: 46 - 61 × 10.7 - 15.8 μm, dominantly 4-, also 1-, 2-, and 3-sterigmate; form of cells giving rise to mature basidia not clear; clamps not observed. | ||||||||
universal veil | not described. | ||||||||
stipe context | not described. | ||||||||
partial veil | not described. | ||||||||
lamella edge tissue | not described. | ||||||||
basidiospores |
from Reid (1980): [-/-/-] (9.0-) 10.0 - 14.5 × 5.0 - 6.0 μm, (est. Q = 2.0 - 2.4), cylindric, amyloid; color in deposit not recorded. RET: [22/1/1] 10.8 - 14.5 (-17.7) × (5.0-) 5.2 - 7.5 (-8.4) μm; (L = 12.7 μm; W = 6.3 μm; Q = (1.44-) 1.78 - 2.66 (-3.04); Q = 2.05), hyaline, colorless, thin-walled, smooth, amyloid, elongate to cylindric (infrequently ellipsoid or bacilliform), sometimes constricted; apiculus proportionately small, sublateral; contents guttulate to granulose; color in deposit not recorded. | ||||||||
ecology | not recorded. | ||||||||
material examined |
from protolog: AUSTRALIA: VICTORIA—City of Kingston - Mordialloc, from Reid (1980): AUSTRALIA: VICTORIA—City of Kingston - Mordialloc, RET: AUSTRALIA: VICTORIA—City of Kingston - Mordialloc, | ||||||||
discussion |
Spore measurements from the protolog probably vary from those of the most recent type study due to the magnification under which the spores were examined; it is worth noticing that an estimate of Q from the protolog data would be 2.05, which is the value obtained from the measurement of 22 spores in the recent type study. Reid's (1980) spore measurements are (9.0-) 10.0 - 14.5 × 5.0 - 6.0 μm. An estimate of Q is 2.23. The difference is largely due to significantly narrower range of spore width reported by Reid. The other tissue treated by Reid (1980: 22) is the appendiculate material on the pileus margin: "The velar tissue at the edge of the cap is formed largely of oval to subglobose, thin-walled elements, 18 - 42 × 22 - 30 μm, intermixed with a few thin-walled hyphae." | ||||||||
citations | —R. E. Tulloss | ||||||||
editors | RET | ||||||||
Information to support the viewer in reading the content of "technical" tabs can be found here.
name | Amanita curta |
name status | nomen acceptum |
author | (Cooke & Massee) E.-J. Gilbert |
english name | "Brick-Stipe Amidella" |
images | |
historic plates | (1) From Cooke (1890) plate 3, from the very end of Grevillea 18 (fasc. 88). With annotation "Figured from specimens sent with notes." That is to say, this is not an accurate drawing from life; and, in particular the absence of detail in the cross-section probably should not be used to draw any anatomical conclusions. |
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.