Forest Pathology Written Quiz #2. Spring, 1996. Name_________________________
1. In the chart that follows will be found pairs of genera of
polypores which are nearly identical based on the macroscopic
characteristics of the sporocarps. Based on mating studies and
studies involving DNA, the genera are separated on the type of
rot caused.
| Antrodia | Diplomitoporus |
| Oligoporus | Tyromyces |
| Phaeolus | Inonotus |
| Gloeophyllum | Lenzites |
a. If sporocarps were not present and if the rotted wood
was present, discuss all of the different ways you would be able
to tell the genera pairs apart.
2. The following list of fungi cause the symptoms or diseases
indicated. Place the letter of the class in the space to the left
of the sympton or disease caused.
A. Basidiomycetes
B. Ascomycetes
C. Fungi Imperfecti (Deuteromycetes)
D. Phycomycetes
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Which class or classes of fungi can cause:
______a root rot
______a needle spot
______a heart rot
______damping off (wilt of seedlings)
______a stem canker
3. You are to survey two stands of trees in northern
California. One stand is composed mostly of white fir and is located
above 3000 feet in elevation; the second stand is composed mostly
of Douglas fir trees around 1500 feet in elevation.
The district manager wants you to survey for root diseases.
The district manager in the district for which you work believes that rotted wood is necessary for nutrient recycling in the soil of these forested stands. The forest ecologist also insists that silvicultural methods to insure a healthy forest include knowledge of potential mycorrhizal formers in the stands. Thus the forest ecologist insists that the survey also include fungi that decay wood, dead trees (i. e. slash, logs, twigs, and standing dead trees) as well as fungi that decay live trees.
The district manager is in a hurry for this information and just informed you of this job upon your arrival at work. You commute to work and the trip takes one hour. Your books were stolen last week and the ones you've reordered have yet to arrive. Alas, you will have to rely on what you've learned.
By the way, the district manager has informed you that if you do not have the information in by the end of the day, you will no longer have a job! You complain bitterly since you've always thought that it wasn't necessary to memorize this information for you thought you always would be able to use your books. However, the manager, who was a sargent in the marines, re-emphasized his demands.
You decided to really impress the district manager.
Not only will you provide a survey but you will also organize
the survey into a field identification booklet for the manager
and your peers to use. So you sit down before you leave and you
separate the fungi you might find into root diseases and wood
decay fungi.
Fungi that cause a root rot or a root and butt rot
Symptoms used to identify a host which has a potential root or root and butt rot (to be helpful you include a definition of each and every symptom).
| Species of fungi you might find | diagnostic features of the sporocarp | symptoms | indicators | host (i. e. DF or WF) |
Wood Decay Fungi: Circle the species you know you will
find., i.e. those that are most abundant in these
| Species of fungi you might find | diagnostic features of the sporocarp | indicators | host (i. e. DF or/and WF) | on live or on dead trees (indicate which one) |
From prior experience with other surveys of similar stands, you
know you could only find the following species of fungi that cause
wood decay.
| Antrodia heteromorpha |
| Cryptoporus volvatus |
| Echinodontium tinctorium |
| Fomitopsis cajanderi |
| Fomitopsis officinalis |
| Fomitopsis pinicola |
| Ganoderma applanatum |
| Gleophyllum saepiarium |
| Hericium abietis |
| Hericium erinaceus |
| Inonotus tomentosus |
| Ischnoderma resinosa |
| Laetiporus sulphureus |
| Lenzites betulina |
| Melanopus picipes group |
| Oligoporus amaraus |
| Oligoporus leucospongia |
| Phellinus (Fomes) arctostaphyli |
| Phellinus (Fomes) chrysoloma |
| Phellinus (Fomes) fomentarius |
| Phellinus (Fomes) igniarius |
| Phellinus (Fomes) juniperinus |
| Phellinus (Fomes) pini |
| Phellinus (Poria) ferruginosa |
| Pholiota abietis |
| Pycnoporellus (Polyporus) alboluteus |
| Serpula lacrymans |
| Trametes (Polyporus) hirsuta |
| Trametes (Polyporus) versicolor |
| Tricaptum (Polyporus) abietinus |