SECTION 
CIX. 
CX. 
CXI. 
CXII. 
CXIII. 
CXIV. 
CXV. 
CXVI. 
CXVII. 
CONTENTS, 
b. Obligate parasites. 
Facultatively saprophytic : Peronosporeae, Mucorini, Ustilagineae, Exo- 
basidium, Myxomycetes ; strictly obligate: Peronosporeae, Erysi- 
pheae, Uredineae, &c. . A ‘ $ . 5 a A R 
Autoecism and metoecism . : 5 
Growth and extension of parasites in kübsteiee of — iilants 
Behaviour of these parasites to separate tissues aad to the parts of the 
‘cells of the host . 7 A 3 
Reactions of the plants Sale . . 7 é E 5 n 
Lichen-forming Fungi. 
Formation ofthe Lichen-thallus by the growing together of certain Algae 
and Ascomycetes and a few Hymenomycetes which attackthem. Enu- 
meration of Lichen-forming algal forms as at present known , « 
First beginning of the Lichen-thalus . . . . 8 . 
Conformation and structure of the Lichen-thallus. Fruticose, foliaceous 
and crustaceous forms. Distinctions in anatomical structure: 1. 
Heteromerous thallus. 2. Graphideae and similar forms. 3. Granular 
crustaceous thallus of Thelidium and others. 4. Coenogonium-form. 
5. Collemaceae or Gelatinous Lichens. 6. Hymenomycetous Lichens 
Soredia . . 3 . a . . : 
Pseudo- hchens  Historient pamneaice Literature . 2 n P . 
SECOND PART. MYCETOZOA. 
CHAPTER VIII. MORPHOLOGY AND COURSE OF DEVELOPMENT. 
CXVIIL. 
CXIX. 
CXX. 
CXXI. 
CXXII. 
CXXIIL 
CXXIV. 
CXXV. 
[4] 
Myxomycetes. 
Spores. Germination. Swarm-cells . . . Sa fe ot 
Plasmodia . . . Re < i A i i . ri 
Transitory resting states. Cysts. Sclerotia. . . . . 
Development of sporophores and sporangia . . A 7 
Structure of mature sporophores and sporangia ; drohen of ee 
tieae ; simple sporangia ; aethalia . . . . . . ai 
Acrasieae. 
Affinities of the Mycetozoa. 
Doubtful Mycetozoa, 
Bursulla. Vampyrellae. Nuclearia. Plasmodiophora . . . 
b 
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