20 slides

1 - Plasmodiophora brassicae, clubroot, host cells with spores
2 - Synchytrium endobioticum, potato black scab, infected tissue
3 - Plasmopara viticola, downy mildew of grapes, infected leaf 
4 - Albugo candida (Cystopus), white rust of crucifers, conidia and sexual stages on Capsella t.s.
5 - Rhizopus or Mucor, mold, mycelium and sporangia w.m.
6 - Claviceps purpurea, ergot, sclerotium t.s.
7 - Sclerotinia fructigena (Monilia), diseased fruit with conidia t.s.
8 - Rhytisma acerinum, black spot of maple, t.s. with sclerotia
9 - Venturia pirinum (Fusicladium), pear scab, t.s. with conidia
10 - Ustilago zeae, corn smut, t.s. of pustule on host tissue
11 - Root of lupin with symbiotic nitrogen fixing bacteria
12 - Puccinia graminis, uredinia on wheat leaf cause red rust t.s.
13 - Puccinia graminis, aecia or pycnidia on barberry leaf t.s.
14 - Tuberculous lung of cow t.s.
15 - Earthworm (Lumbricus) t.s., causing soil improvement
16 - Trypanosoma equiperdum, causing dourine in horses, blood smear showing parasites
17 - Eimeria stiedae, coccidiosis, sec. of infected rabbit liver
18 - Fasciola hepatica, beef liver fluke, ova w.m.
19 - Taenia, tapeworm, proglottids t.s.
20 - Aphidae, plant lice w.m.