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[ Keys & Checklist/Picturebooks ] "Brown American Star-footed Amanita"
Technical description (t.b.d.) BRIEF DESCRIPTION: (t.b.d.) The spores measure (7.0-) 8.0 - 9.2 (-9.5) x (6.5-) 7.2 - 8.5 (-9.2) µm and are globose to subglobose (occasionally broadly ellipsoid) and amyloid. Clamps are absent from bases of basidia. The species is known from the eastern USA. It can be compared to the European species A. asteropus Sabo ex Romagn. There is some question as to whether A. aestivalis Singer is a distinct species. If A. aestivalis and A. brunnescens are distinct, then it is not yet known to which of these species A. brunnescens var. pallida L. Krieg. must be assigned as a synonym. A. lectotype will have to be located and designated for var. pallida; however, it is quite possible that that will not resolve the issue. The original description of the variety seems to be broad enough to include A. aestivalis and pale individuals of A. brunnescens. Note that the cap color in A. brunnescens is very variable; the specimens in the bottom photograph (above) were found in close proximity and include cap colors ranging from pale citrine to brown. One pileus (second from right) is have citrine and half brown. -- R. E. Tulloss Photo: Dr. Samuel S. Ristich (top row, right, Maine), R. E. Tulloss (top row, left and bottom row, South Carolina; top row center, New York)
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[ Keys & Checklist/Picturebooks ] Last changed 29 September 2009. |
