Sketches should be made of disease symptoms and pathogen signs. Use proper terminology in labeling various parts of the sketches. These drawings need not be works of art, but they should serve as study aids in reviewing for quizzes and exams. Your description grade will be mostly based on your sketches.
i.Needle cast (Necrophytes). Symptoms are dead tissue or needles
Obtain pine (Pinus spp.) needles infected with Lophodermium.
Using a dissecting microscope, learn to recognize the distinctive fruiting structure of this fungus (elongated apothecia or hysterothecia).
Obtain balsam fir (Abies balsamea) needles infected with Isthmiella (= Bifusella) and learn to recognize the pycnidia (asexual) and hysterothecia (sexual) of this species. (http://www.na.fs.fed.us/spfo/pubs/howtos/ht_bfir/ht_bfir.htm) (class web site)
ii.Red belt fungus. (class web site)
Fomitopsis pinicola (Fomes pinicola) is the most common decay of slash and logs in North America (conifers and deciduous trees). It causes a brown, cubical, crumbly rot.
iii.Phellinus trunk rot of aspen. (class web site)
Phellinus tremulae (Fomes igniarius var. populinus) is the most serious decay of aspen (Populus spp.). It causes a white trunk rot of living trees.