624 FUNGI IMPEEFECTi: THE IMPERFECT FUNGI 



Sclerotium subterranean, consisting of a large mass of tangled hypliae enclosing 

 particles of soil, plant debris, etc., the outer surface not forming a hard 

 cortical layer; giving rise to spore fruits of Polyporaceae. 



Pachyma 

 Root-like, branching, growing through the soil or between wood and bark or in 

 timber; hard, white within, with black cortex. Usually representing a stage of 

 some Basidiomycete, most frequently Armillariella mellea. 



Rhizomorpha 

 Coarsely interwoven hyphae; mostly parasitic on roots of vascular plants. 



Ozonium^^ 



Literature Cited 



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: The Fungi Imperfecti: Order Sphaeropsidales. With Keys and References 



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Bessey, Ernst A.: Spore forms of Spegazzinia ornata Sacc, /. Mycology, 

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Briosi, Giovanni, e Fridano Cavara: I funghi parassiti delle piante coltivate 

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Dade, H. A.: Ceratostomella paradoxa, the perfect stage of Thielaviopsis para- 

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Delacroix, G. : Quelques especes nouvelles de champignons inf^rieurs. Bull. soc. 

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Dodge, B, 0.: The conidial stage of Peziza pustulata, Mycologia, 29(6) :651-655. 

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Drechsler, Charles: Morphology of the genus Actinomyces, Botan. Gaz., 

 67(l):65-83; (2) : 147-1 68. PZs. 2-9. 1919. 



: Some conidial Phycomycetes destructive to terricolous Amoebae, My- 

 cologia, 27(l):6-40. Ph. 1-7. 1935a. 



: A new mucedinaceous fungus capturing and consuming Amoeba ver- 

 rucosa, ibid., 27(2):216-223. Fig. 1. 1935b. 



Some Hyphomycetes that prey on free-living terricolous nematodes, ibid., 



29(4):447-552. i^i>. 1-18. 1937. 

 DuEMLiNG, Werner William; Garfield G. Duncan; William H. Feldman; 



ET AL.: Antibiotics: I. Microbiological; II. Pharmacological, Ann. New York 



Acad. Sci., 48(2):31-218. 1946. 

 Emmons, C. W., and A. L. Carrion: Sporulation of the Phialophora type in 



Hormodendron, Mycologia, 29(3) :327-333. Figs. 1-6. 1937. 

 Fawcett, H. S.: The cause of stem-end rot of citrus fruits (Phomopsis citri n. 



sp.). Phytopathology, 2(3) :109-113. Pis. 8-9. 1912. 

 Fitzgerald, L. R.: Phoma stenobothri, a fungus parasite of the grasshopper. 



Am. Midland Naturalist, 29(3):761-767. 2 pis. 1943. 

 Fleming, Alexander: Penicillin — Its Practical Application, x -f- 380 pp. Illus- 

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25 Besides Ozonium many names have been given to various hyphal forms. 



