The North American species of Pholiota, by Alexander H. Smith and L. R. Hesler.

132 The North American Species of Pholiota
Key to Sections
1. Annulus conspicuous and distinct...................... Sect. Albivelatae
1. Veil leaving a more or less evanscent zone......Sect. Phaeonaematoloma
Section Albivelatae sect, nov.
Annulus conspicuus, membranaceus vel floccosus; chrysocystidia adsunt. Typus P. albivelata.
Key to Species. Spores 9-12 4.5-6............................................... P. sipei
1. Spores sm aller........................................2
2. Pileus pellicle well-developed; spores 7-9 x 4-5.5.......................................................................... a lb iv e la t a
2. Pileus lacking a gelatinous pellicle 3.......
3. Spores 4.5-6 x 3-4........................................................... P. dluroides
3. Spores 6-8 4-5........................................... 4
4. Pleurocystidia 35-53 X 8-14 ut; spores with a germ pore............................................................................ P. cu b en sis
4. Pleurocystidia 25-36 x 5-12,/; spores without a pore.................................................................................. P. j o h n s o n ia n a
Stirps Albivelata
61. Pholiota sipei sl. nov.
Illustrations: Text figs. 75-77.
Pileus 2-1.5 latu.s, "light-drab," u7)nbone "cinnamon-drab," vi.scid(1s,
ma)rgine stlriatlllatuls. Lamellae sinuo.sa e, oncolores, confertac, nmediolatac. Stipes 5-7 cm longus, 4-7 mm crassus, flexuosus, basi parvmnlm builbosus, supra planus, infra albus cun flavidis squamis. Veluml album membraneurn manifcstum. Sporae 9-12 x -/.5-6 L., ellipsoideae, truncatac.
Pleurlocystidia 41-64 X 10-18 a, ampullacea, ventricosa vel clavata.
Cheilocystidia 25-58 x 7-12 p., ventricosa, clavata. Pilei trama stratosa,
gelatinosa. Cuticula gelatinosa. Caulocystidia desunt. Specimen typicum
in Herb. Univ. Mich.; lecturn prope Williamette, Oregon, November 16,
1947, Sipe 1059.
Pileus 2-4.5 cm broad, glabrous, very viscid, margin finely striate,
margin in some hung with fragments of the veil; color light drab over
the marginal area and drab over the umbo (dull gray on disc and paler
on margin, as dried marginal area olive grayish and disc dull fulvous).
Lamellae sinuate, close, moderately broad, pallid to avellaneous becoming cinnamon from the spores.