Jan. 1907] North American Species of Lepioia 11 



83. LEPIOTA AVELLANEA Clements, Bot. Neb. II, 

 1893. 



Pileus fleshy, dry, explanate; the cuticle brown, at length 

 lacerate toward the margin into appressed scales. Stipe arising 

 from a bulbous base, fistulous, brown-fibrillose ; the annulus thin, 

 brownish, persistent. Lamellae cream-color, reddening with age, 

 remote from the stipe ; spores irregularly ovoid, acute at one 

 apex, 8-10 X 5-6 mic. 



Growing on the ground in a green house. Nebraska, Clem- 

 ents. Pileus 5 cm. in diameter, the stipe 4 cm. long and 8 mm. 

 thick. 



§ 3. ANNULI SUPERI. THE VEIL IN THIS SEC- 

 TION IS A PROLONGATION BEYOND THE APEX OE 

 THE DERMIS OF THE STIPE; THIS IS REE LEX ED 

 OUTWARD AND DOWNWARD OVER THE LAMELLAE, 

 THE LOWER SURFACE OF THE VEIL CORRESPOND- 

 ING TO THE OUTER SURFACE OF THE STIPE. IT IS 

 AT FIRST IN CONNECTION WITH THE EDGES OF 

 THE LAMELLAE, FORMING A CONTINUOUS MEM- 

 BRANE OVER THE WHOLE HYMENIUM; AS THE 

 PILEUS EXPANDS THIS CONNECTION IS DISSOLVED, 

 BEGINNING WITH THE MARGIN OF THE PILEUS, 

 UNTIL AT LENGTH THE ENTIRE MEMBRANE IS AT- 

 TACHED ONLY TO THE UPPER END OF THE STIPE, 

 HANGING DOWN FROM IT AND FLARING OUT- 

 WARDS. 



X. LYCOPERDINEAE. Pileus thick and fleshy; the der- 

 mis from the first composed of thick scales and pyramidal warts. 

 Stipe thick, stout and usually solid, often prolonged dozvnward 

 and deeply rooting; the veil persistent entire or more or less torn 

 and fragmentary. 



A tribe of several species named for Lepiota lycoperdinae 

 Spegazzini, Fungi. Arg. The European representative is Lepiota 

 Vittadini Moretti, Bot. Ital., "A large species, of a pure white ;. 

 extremely beautiful" (Berkeley.) 



84. LEPIOTA POLYPYRAMIS, A. (Amanita) poly- 

 PYRAMis B. &. C, Ann. & Mag. N. H. 1853. 



Pileus fleshy, subglobose then convex and expanded ; the 

 flesh thick, soft, white ; the dermis composed of thick pyramidal 

 warts, which, by the growth of the pileus, are gradually separated, 

 except in the center, drawn apart and to some extent deciduous. 

 Stipe thick at the base and tapering downward into a very long 

 rooting portion, tapering slightly upward, solid, the surface white 

 and somewhat scaly ; the veil a large, thick, warted membrane,- 



