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39. Clathrus, pileus (stemless) perforated by anastomosing interconnecting branches.
40. Phallus, pileus reticulated with cells, or tubercular.
FIFTH ORDER.
HYMENOTHECII membrane-cases. Membranous, indissoluble hymenium, powdery with sporules.
† AGARICOIDEI agaric-like, with lamellate gilled or veined hymenium.
41. Amanita, stipe volvate sheathed at the base.
42. Agaricus: Evolvatus lacking a volva, or volva absent.
α. Lepiota, ringed stipe, gills drying out, not cloudy.
β. Cortinaria, ring dissolved into arachnoid cobweb-like threads.
γ. Gymnopus, fleshy convex pileus, naked stipe.
δ. Mycena, membranous convex pileus, striate, naked (fistulose hollow) stipe.
ε. Omphalia, excavated depressed circular pileus, central stipe.
ζ. Pleuropus, entire pileus, mostly dimidiate half-shaped, lateral or absent stipe.
η. Coprinus, membranous or sub-fleshy pileus, deliquescing dissolving into liquid with the gills.
κ. Pratella, fleshy, sub-deliquescing pileus, gills cloudy or variegated, or sub-watery, soft.
λ. Lactifluus, pileus and gills lactescent milky.