272 The Philippine Journal of Science isis 



Plate XXII 



Fig. 1. Knapsack spray pump. 



2. Knapsack spray pump. 



3. Bucket spray pump. 



4. Barrel spray pump. 



TEXT FIGURES 



Fig. 1. Phyllachora sorghi v. Hohnel. Cross section of stroma, showing- 

 perithecium, ostiolum, asci, and ascospores (x 75). Vascular 

 bundles of leaf develop normally within the mass of fungus 

 mycelium. 



2. Phyllachora sorghi v. Hohnel. a, asci with paraphyses ( x 325) ; 



b, ascospores (X 325). 



3. Puccinia purpurea Cooke, a, teleutospores (X 315); 6, uredo- 



spores (X 315). 



4. Septogloeum arachidis Rac. a, cushionlike structure of conidio- 



phores ( X 350) ; b, germinating conidia ( X 350) ; c, conidia 

 (X 350). 



5. Septogloeum arachidis Rac. Germinating conidia ( X 350) ; germ 



tubes entering host tissue by way of stomata. 



6. Rhizopus artocarpi Rac. a, sporangium with spores ( X 330) ; 



b, rhizoid (x 330), from tissue of fruit; c, bursted sporangium, 

 showing columella, sporangiophore, and spores (x 380). 



7. Cercospora brassicicola Henn. a, group of conidiophores ( X 340) ; 



b, small conidia germinating ( x 340) ; c, typical needlelike co- 

 nidia (X 340). 



8. Mycosphaerella caricae Syd. a, perithecium ( X 325) ; 6, broken 



perithecium, showing production of asci (x 325) ; c, ascus with 

 ascospores (X 325); d, ascospores (x 325). 



9. Meliola. On Citrus nobilis Lour, a, perithecium ( x 75) ; b, 



ascus (X 310); c, ascospores (x 310); d, mycelium with hy- 

 phopodia (X 310); e, set« (X 75). 



10. Bud rot of coconut, a, cross section of infected portion of young 



unfolded leaf, showing mass of bacteria in tissue ( X 425) ; b, 

 cross section of infected portion of young unfolded leaf, showing 

 mass of bacteria in xylem tubes of a vascular bundle ( X 330) . 



11. Pestalozzia palmarum Cke. et Grev. Conidia, showing character- 



istic appendages (x 990); from pure culture. 



12. Micropenis mucosa Syd. Immature perithecium (X 335). The 



fungus does not penetrate leaf tissue. 



13. Micropeltis mucosa Syd. Asci with ascospores (x 340). 



14. Hemileia vastatrix B. et Br. a, infected coffee leaf, showing 



mycelium in tissue and production of uredospores some of 

 which were cut in sectioning ( x 325) ; b, teleutospores 

 ( X 325) ; c, germinating teleutospores, promycelia, and sporidia 

 (X 325); d, uredospores (X 325). 



15. Phytophthora colocasiae Rac. Conidia ( X 330) . 



16. Rhizoctonia. Mycelium from pure culture of fungus (X 340), 



isolated from Glycine max (Linn.) Merr. (G. hispida Maxim.). 

 Note characteristic branching. 



