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TECHNICAL KEY TO THE GENERA OF MUSHROOMS<br />
20. Veil present 21<br />
20. Veil absent 23<br />
21. Veil composed of thick-walled elements; hymenophore<br />
venose to sublamellate Delicatula<br />
D. (Omphalia) integrella (Pers. ex Fr.) Pat.<br />
21. Veil not as above 22<br />
22. Pileus covered with sphaerocysts Cystoderma<br />
C. (Lepiota) amianthinum (Scop, ex Fr.) Fayod<br />
22. Pileus with a cuticle of appressed hyphae Armillariella<br />
A. ( Armillaria) mellea (Vahl ex Fr.) Karst<br />
23. Spores rough with a smooth spot at the hilum; cystidia usually present on edges<br />
of the lamellae and typically with a harpoon-like incrustation at apex; clamp<br />
connections absent Melanoleuca<br />
M. (Tricholoma) melaleuca (Pers. ex Fr.) Murr.<br />
23. Not as above 24<br />
24. Spores without a smooth spot at the hilum; clamp connections present;<br />
fruiting bodies fleshy Leucopaxillus<br />
L. (Tricholoma) tricolor (Peck) Kuhner<br />
24. Not as above 25<br />
25. Fruiting bodies thin pliant, marasmioid; stipe cartilaginous to tough,<br />
with bright colored mycelium surrounding the base Xeromphalina<br />
X. (Omphalia) campanella (Batsch ex Fr.) Kuhner & Maire<br />
25. Not as above 26<br />
26. Lamellae decurrent and margin of pileus inrolled Cantharellula<br />
C. (Cantharellus) umbonata (Gmelin ex Fr.) Singer<br />
26. Lamellae variously attached but if decurrent then margin<br />
of pileus straight at first 27<br />
27. Fruiting bodies typically small, fragile, more or less conical;<br />
trama amyloid Mycena<br />
M. galericulata (Scop, ex Fr.) Kummer<br />
27. Fruiting bodies coUybioid, omphalioid or clitocyboid in habit;<br />
trama not amyloid Fayodia<br />
F. (Omphalia) bisphaerigera (Lange) Kuhner<br />
27. Fruiting bodies larger, more fleshy; lamellae more or less sinuate Tricholoma<br />
T. flavovirens (Pers. ex Fr.) Lundell<br />
28. Stipe excentric to lateral; habit pleurotoid 29<br />
28. Stipe central 36<br />
29. Pileus and trama of lamellae gelatinous or with well-defined gelatinous<br />
layers present in the pileus, especially the cuticle 30<br />
29. No gelatinous layers present 31<br />
30. Spores white, smooth Resupinatus<br />
R. (Pleurotus) applicatus (Batsch ex Fr. sensu Kaufi'm.) S. F. Gray<br />
30. Spores rough, creamy pink Rhodotus<br />
R. (Pleurotus) palmatus (Bull, ex Fr.) Maire<br />
31. Veil at first covering the hymenium; resupinate or laterally<br />
attached, not stipitate Tectella<br />
T. (Partus) patellaris (Fr.) Murr.<br />
31. Veil lacking, or if present carpophore stipitate 32<br />
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