Z8 WU7 
No. 4.—CULTURE STUDIES ON POLYMORPHISM OF 
HYMENOMYCETES. 1 
BY GEORGE RICHARD LYMAN 
CONTENTS. 
PAGE. 
Introduction.125 
The nature of polymorphism 
among Basidiomycetes . . 127 
Review of present knowledge 
of polymorphism among 
Basidiomycetes .... 129 
Protobasidiomycetes . . 129 
Uredineae.129 
Auriculariineae and Tre- 
mellineae.129 
Pilacraceae.130 
Autobasidiomycetes . . . 131 
Gasteromycetes . . . 131 
Hymenomycetes . . . 131 
Dacryomycetaceae . . 131 
Exobasidiaceae . . . 132 
Hypochnaceae . . . 132 
Hemigastraceae . . 134 
Thelephoraceae ... 135 
Clavariaceae .... 136 
Hydnaceae . . . . 137 
Agaricaceae . . . . 137 
PAGE. 
Polyporaceae . . . 141 
Summary.143 
Culture methods.146 
Description of cultures . . 148 
Oidia. 149 
Chlamydospores .... 149 
Corticium subgiganteum (M i- 
chenera artocreas ) . . . 151 
Corticium alutaceum ... 160 
Peniophora Candida ( Aege - 
rita Candida) .167 
Corticium roseo-pallens . . 173 
Corticium effuscatum . . 176 
Lentodium squamulosum . 181 
General considerations . . 193 
The vegetative mycelium . 193 
Oidia and chlamydospores . 194 
Bulbils.196 
Conidia.199 
Summary.200 
Literature.* . 203 
LIBRARY 
NEW YORK 
BOTANIC AL 
GARDEN. 
Introduction. 
The life histories of most groups of Basidiomycetes are but imper¬ 
fectly understood at the present time, and consequently we have but a 
meager knowledge of the nature and extent of polymorphism in this 
class of fungi. The group which has been studied most extensively 
in cultures is the Uredineae, and the development of a considerable 
number of species has been carefully followed out; but the rusts, 
1 Contributions from the Cryptogamic laboratory of Harvard university.—LXIV. 
