348 



General Index. 



Rust of wheat, how carried over 



from year to year ... 21, 68 



how spread ... ... 69 



infection from within, my co- 

 plasm theory ... ... 4, 70 



influence on yield ... ... 65 



losses from ... ... 64 



mycelium not in seed ... 70 



mycoplasm theory ... 4, 70 



not spread from other cereals 53 



prevention and mitigation ... 71 

 question, present position in 



Australia ... ... 64 



spores, in soil ... ... 69 



on seed ... ... 69 



to destroy ... ... 73 



wintering ... ... 8, 20 



spraying impracticable ... 73 



Rust-liable soils ... ... 72 



Rust -proof wheat unknown ... 62 

 Rust-resistance and structural 



characters ... ... 61 



Rust-resisting wheats ... ... 62, 74 



Rusts, Australian, and their hosts 45 



cycle of development ... 2, 10 



in heteroecious species ... 58 



indigenous and introduced ... 42 



influence of parasitic habit ... 40 



relation to other fungi ... 40 



sexuality ... 14, 17, 75 



Rusty straw and grain analyzed 65 



Rye, rust ... ... ... 53 



Saccoblastia ovispora ... ... 32 



Saprophytes becoming parasitic 52 



Scarlet pimpernel ... ... 43 



Scent of spermogonia ... ... 13 



Scrophiilariaceae, Cronartium ... 53 



Secale ... ... ... 80 



Seed, perennial mycelium ... 5 



not in wheat ... ... 70 



Seed-bed" and rust ... ... 71 



Seed-treatment for rust ... 73 



Seeds with aecidia ... ... 70 



Selection and crossbreeding wheat 74 

 Self-sown wheat and rust 21, 69, 72 



Senecio vulgaris ... ... 16 



Septa... 



formation in promycelia ... 27 

 Sexuality and nuclei ... ...14,75 



of aecidia ... ... 15, 17 



Shot-hole caused, by Puccinia mal- 



vacearum ... ... 6 



by P. pruni ... .... 6 



Silver wattle gall fungus ( Uromy- 



cladium notabile) ... ... 6 



Softening tissues for microscopical 



examination ... ... 12 



Soil moisture, influence on rust ... 10 



Soils, rust-liable and rust- free .., 72 

 treatment with copper salts 



to prevent disease ... 62 



Sorus, uredo ... ... ... 19 



Special corpuscles ... ... 4 



Specialisation of parasitism ... 52 



in Erysiphaceae ... ... 54 



Specific variation, gradations ... 79 

 Spermatia, embedded in sugary 



secretion ... ... 13 



formation... ... ... 13, >8 



germination ... ... 13, 37 



not male cells ... ... 13 



uninucleate ... ... 14 



Spermogonia, associated with cer- 

 tain spore forms ... ... 1 3, 37 



attractive to insects ... 13, 38 



Darluca flum mistaken for... 22 

 functionless ... 13, 37, 39 



importance ... ... 14 



occurrence ... ... 13 



origin ... ... ... 38 



paraphyses ... ... 13 



repetition of spore forms ... 14 

 suppressed ... ...14,37 



Spore-bed ... ... ... 19 



Spoie-forms ... ... ... 7 



investigation .. ... 11 



origin of principal ... ... 31 



repetition... ... 11, 18, 19 



suppression ... ... 10 



Spores, distribution ... ... 7 



germination, of aecidiospores 7, 16 

 of amphispores ... ... 25 



of spermatia ... ... 13, 37 



of sporidiola ... ... 27 



of teleutospores ... 8, 24, 27, 66 

 abnormal ... ... 35 



of uredospores ... 7,19,21,27 

 nuclei ... ... ... 14 



on seed ... ... ... 69 



parasites ... ... ... 7, 22 



wintering, of teleutospores ... 8 



of uredospores ... ... 8,20 



Sporidiola, air necessary for for- 

 mation ... ... 27 



conveyed by insects ... 28 



distribution ... ... 28 



earliest spore form... ... 32 



formation... ... ... 27 



germination ... ... 27 



incapable of infecting grasses 



bearing them ... ... 59 



infection ... ... ... 9, 28 



origin ... ... ... 32 



uninucleate ... ... 14 



Spraying for rust of wheat im- 

 practicable 73 



Staining spores ... ... 12 



Starvation of host and infective 



power of rust ... ... 60 



Stellaria media ... .. 43 



Sterigma ... ... ... 31 



Structural characters of host and 



susceptibility, to disease ... 61 

 to wheat rust ... ... 61 



Stubble burning and rust ... 72 



Sugar, influence on germ tubes of 



fungi ... ... ... 52, 62 



Sulphate of copper, in seed treat- 

 ment for rust ... ... 73 



treatment of soil with ... 62 



Suppression of spore forms ... 10 



Surface markings of spores ... 12 



