Botany 394 Test Number 3 Spring, 1994 Name______________________________

I. Answer the following questions. Be complete! Your comments should stay within the space provided.

(15 pts).

	Stage I of Cronartium ribicola	with Stage III of Cronartium ribicola
produced on which host?
name (not number) of next stage produced?
color
ploidy #
kind of ornamentation
how borne within sorus (i. e., solitary or chains)
describe the sorus which produces this stage
host infected

II. Answer the following questions. Be complete! Your comments should stay within the space provided

(15 pts)

	Phoradendron	Arceuthobium
damage caused by pathogen
type of symptoms produced
vector of inoculum
length of time pathogen seen on host
size of pathogen on host
describe the radicle and endosperm
describe the fruit and the seed
describe the leaves
hosts for all species

3. Provide a dichotomous key to the following 20 diseases which occur on living hosts.

1. Arceuthobium douglasii

2. Arceuthobium campylopodum

3. Arceuthobium abietinum

4. Phoradendron juniperinum var. libocedri

5. Phoradendron bolleanum var. pauciflorum

6. Cronartium ribicola

7. Endocronartium harknessii

8. Calyptospora goeppertiana

9. Gymnosporangium libocedri

10. Verticladiella wageneri

11. Phytophthora lateralis

12. Armillaria mellea

13. Phellinus weirii

14. Phellinus pini

15. Phellinus chrysoloma

16. Heterobasidion annosum

17. Fomitopsis officinalis

18. Phaeolus schweinitzii

19. Echinodontium tinctorium

20. Inonotus dryaedeus

After each rust: answer the following:

1. Is it autoecious or heteroecious?

2. Is it macrocyclic, microcyclic, or demicyclic?

3. Which spore stage (i. e., 0, I, II, III, IV) occurs on which host (name the host) ?

If you use

1) only symptoms for mistletoes;

2) signs for everything else (in other words you can't use indicators for the rots)

3) and you do not use the host name

4) and if your key is 90% correct

Your score on this quiz (including the field portion) will be increased by 20%