534 Fischer . The Biology of Armillaria mucida , Schrader . 
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6. ■: Fungoid pests of cultivated plants. 1906, p. 212. 
7. Fayod, A. : Prodrome d’une histoire naturelle des Agaricin^es. Annales des Sciences naturelles, 
7® serie, ix, 1889. 
8. Fischer, C. E. C. : The Development of Armillaria mucida. Annals of Botany, July, 1909. 
9. Frank, A. B. : Krankheiten der Pflanzen. 1880. 
10 . Fries: Systema mycologicum, i, 1821, p. 28. 
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Lucaud, Gillot and. Vide 12 supra. 
14 . Massee, G. : British Fungus Flora, iii, 1895, p. 23. 
15. : A Textbook of Plant Diseases. 1889. 
16 . McIlvaine, C. : One thousand American Fungi. 1902. 
17. Munch, E. : Die Form der Hausschwammsporen. Naturwissenschaftl. Zeitschrift fur Land- und 
Forstwirtschaft, v, No. 12, 1907, p. 616. 
18. * : Untersuchungen iiber Immunitat und Krankheitsempfanglichkeit der Holzpflanzen. 
Naturwissenschaftl. Zeitschrift fur Land- und Forstwirtschaft, vii, 1909 ; no. i,p. 54; no. 2, 
p. 87; no. 3, p. 129. 
19. Patouillard: Tabulae analyticae fungorum, 1886, p. 181. 
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23. Saccardo : Sylloge Fungorum, v, p. 85. 
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26. Tubeuf, C. von: Pflanzenkrankheiten. 1895. 
27* : Ueber normale und pathogene Kernbildung etc. Zeitschrift fur Forst- und 
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clxxxix, 1897. 
EXPLANATION OF PLATES XXXVII AND XXXVIII. 
Illustrating Mr. Fischer’s paper on Armillaria mucida. 
Figs. 1, 2, and 24 are from photographs. Figs. 3 to 16, 29 a, b, c, and 32 to 35 from drawings 
by the author with the camera lucida. Figs. 17 to 23, 25 to 28, 30 and 31 from freehand drawings 
by the author. 
PLATE XXXVII. 
Figs. 1 and 2. Armillaria mucida on beech. Photographs by Dr. Somerville Hastings, F.R.C.S. 
1 x To : * 2 x h 
Fig. 3. Collapsed, boat-shaped dry spores, x about 475. 
Fig. 4. Turgid spherical spores, x about 475. 
Fig. 5. Spores from fruit body grown in pure culture. X about 475. 
Fig. 6. Germinating spores, x about 260. 
Fig. 7. Section from stipe putting out new hyphae in jelly, x about 100. 
Fig. 8. Germ tube and vegetative growth from basidium. a. Germ tube from spore ; b, much 
branched hypha from basidium. x about 475. 
Fig. 9. Multi-septate hypha grown out of a basidium. x about 475. 
Fig. 10. Hypha in moist jelly, x about 100. 
