108 PARASITES BELONGING TO THE GENUS GLOMEEELLA. 



Plate. II. Figs. 16 to 29. — Photomicrographs of asci and ascospores of Glornerella from 

 various hosts. Fig. 16. — From tea. An ascus from a fresh glycerin mount, 

 stained in eosin, from leaves from the Department greenhouse, kept in a moist 

 chamber. Fig. 16a. — Ascospores from an unstained glycerin mount from the 

 same material as figure 16. Fig. 17. — From privet. An ascus from a 2-year-old 

 formalin mount, unstained, from twigs from Digby, Nova Scotia. Fig. 17a. — ■ 

 Ascospores from same mount as figure 17. Fig. 18. — From rubber plant. An 

 ascus from a glycerin mount from fresh specimen, stained, from leaves from the 

 Department greenhouse, kept in a moist chamber. Fig. 18a. — Ascospores from 

 a glycerin mount, stained in eosin, from the same source as figure 18. Fig. 19. — 

 From Ficus longifolia. An ascus from a 1-year-old formalin mount, unstained, 

 from leaves from the Department greenhouse, kept in a moist chamber. Fig. 

 19a. — Ascospores from same mount as figure 19. — Figure 20. — From honey locust. 

 An ascus from an old mount, probably formalin, unstained, from corn-meal 

 culture from leaves from the grounds of the Department of Agriculture. Fig. 

 20a. — Ascospores from same mount as figure 20. Fig. 21. — From spiral flag ( Costus 

 speciosa). An ascus from a fresh glycerin mount from dried specimen, stained in 

 eosin, from a leaf from the Department greenhouse, kept in a moist chamber. 

 Fig. 21a. — Ascospores from a 2-year-old formalin mount, unstained, from the same 

 specimen as figure 21. — Fig. 22. — From Curculigo sp. An ascus from a formalin 

 mount, 1 year old, slightly stained in methyl blue, from a leaf from the Depart- 

 ment greenhouse, kept in a moist chamber. Fig. 22a. — Ascospores from the 

 same mount as figure 22. Fig. 23. — From ebony (Brya). An ascus from a glyc- 

 erin mount from a fresh specimen, stained in eosin, from a leaf from the Depart- 

 ment greenhouse, kept in a moist chamber. Fig. 23a. — Ascospores from the same 

 mount as figure 23. Fig. 24. — From chocolate (Theobroma cacao L.) An ascus 

 from a glycerin mount from fresh material, stained in eosin, from a leaf from the 

 Department greenhouse, kept in a moist chamber. Fig. 24a. — Ascospores from 

 the same mount as figure 24. Fig. 25. — From Pitcairnia. An ascus from a fresh 

 glycerin mount from dried specimen, stained in eosin, from a leaf from the Depart- 

 ment greenhouse, kept in a moist chamber. Fig. 25a. — Ascospores from a glyc- 

 erin mount, stained in eosin, from the same material as figure 25. Fig. 26. — 

 From palm (Hedyscepe sp.). An ascus from an old mount, probably in formalin, 

 unstained, from a leaf from the Department greenhouse. Fig. 26a. — Ascospores 

 from a fresh glycerin mount, stained with eosin, from a leaf from the Department 

 greenhouse. Fig. 27. — From ginkgo. An ascus from an old mount, probably 

 in formalin, unstained, from a leaf from the grounds of the Department of Agri- 

 culture. Fig. 27a. — Ascospores from the same mount as figure 27. Fig. 28. — 

 From Caryota. An ascua from a mercuric chlorid mount, 1 year old, unstained, 

 from a leaf from the Department greenhouse, kept in a moist chamber. Fig. 28a. — 

 Ascospores from the same slide as figure 28. Fig. 29. — From fig. An ascus from 

 a fresh glycerin mount, unstained, from corn-meal agar culture 1283d from conidia 

 on fruit from Norfolk, Va. Fig. 29a. — Ascospores from the same mount as figure 29. 



Plate III. Glornerella cingulata. — Three series of asci from different hosts, showing the 

 wide range of variation observed. Photomicrographs from fresh glycerin mounts. 

 Figs. 30 to 34. — From grape. All from cultures of the same origin. Fig. 30. — 

 An ascus 101 p. long, from corn-meal agar slant culture 1373b from Vienna, Va. 

 Fig. 31. — An ascus 87 p long, from the same culture. Fig. 32. — An ascus 77.5 p 

 long, from the same culture. Fig. 33. — An ascus 70.5 p long, from another tube 

 from the same source. Fig. 34. — An ascus 54.5 p long, from corn-meal agar cul- 

 ture 1373b. Figs. 35 to 39. — Glornerella cingulata from apple. Fig. 35. — An ascus 

 108 p long, from corn-meal agar slant culture 1348k, from conidia on Willow Twig 

 apple from Vienna, Va. Fig. 36. — An ascus 89.5 p long, from the same culture as 

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