| Amanita yucatanensis
Guzmán "Yucatán Ringless Amanita"
Technical description not yet available. BRIEF DESCRIPTION: The cap of A. yucatanensis is 25± mm wide, convex to near planar, smooth, dry, and has a striate margin. It is white to pale yellowish. The flesh is white. The volva is absent or is present as scattered irregularly shaped, whitish, thin, flat patches. The gills are narrowly adnate, white to whitish rose, drying pale orange-brown, with fimbriate edges. The short gills are truncate and unevenly distributed. The stem is 12± (?) x 5± mm, narrowing markedly upward, floccose-scaly below, pruinose above, and exannulate. The volva is a white, delicate, membranous sac. The spores measure (7.8-) 9.5 - 13.0 (-14.2) x (7.0-) 7.5 - 9.5 (-11.8) µm and are inamyloid and broadly ellipsoid to ellipsoid (occasionally subglobose). Clamps are present at bases of basidia; they are occasionally rather small and somewhat difficult to locate in some sections. Amanita yucatanensis was originally described from the state of Yucatán, Mexico in "secondary, perennial tropical rain forest." It is still known only from the original collections cited by Guzmán. According to current understanding
of systematics of Amanita section Vaginatae,
A. yucatanensis seems to be a rather isolated
neotropical taxon. Perhaps, the closest relationship is
with the Mediterranean group of taxa related to A. mairei Foley. Return to Section Vaginatae page. Last changed 15 August
2004. |