68 



PARASITES BELONGING TO THE GENUS GLOMEEELLA. 



Table III. — Measurements of conidia and ascospores from cultures and from the hosts, 

 shoiving the ordinary range of variation. 



Host. 



Conidia. 



Ascospores. 



Cultures. 



Host. 



Cultures. 



Host. 



Annona cherimola (cherimoya) . 



Brya ebenus 



Caryota rumphiana 



Cinnamomum zeylanicum (cin- 

 namon). 



Citrullus vulgaris (watermelon). 



Citrus aurantium sinensis 

 (sweet orange). 



Citrus decumana (pomelo) 



Citrus limonum (lemon) 



Citrus nobilis (mandarin) 



Coffea arabica (coffee) 



Costus speciosus (spiral flag) — 



Cucurbita pepo (squash) 



Curculigo sp 



12-16.5 by 4-4.5. 



10.5-12 by 3-4.. 



9-12 by 4.5-5... 

 10.5-18 by 3-4.5. 



14-17 bv 4.5-7.5. 

 10.5-18 by 4-5.. 

 11-19.5 by 4.5-6. 

 15-18.5 by 4.5-6. 

 10-16.5 by 4.5... 

 8-30 by 3-4.5... 



Eriobotrya japonica (loquat). . . 

 Ficus carica (fig) 



Ficus elastica (rubber plant). . . 



Ficus longifolia 



Ginkgo biloba 



Gleditsia triacanthos (honey 

 locust). 



Gossypium hirsutum (cotton). . 



Hedyscepe sp. (palm) 



Ligustrum vulgare (privet) 



Malus sylvestris (apple) 



Mangifera sp. (mango) 



Maranta arundinacea 



Musa paradisiaca sapientum 

 (banana). 



Oxycoccus macrocarpus (cran- 

 berry). 



Persea gratissima (avocado) 



Phaseolus vulgaris (wax bean). . 



Phormium tenax 



Pimenta acris (wild clove) 



Piper macrophyllum (pepper- 

 wort). 



Pitcairnia corah ina 



Psidium guajava (guava) 



Ribes oxyacanthoides (goose- 

 berry). 



Rubus occidentalis (black rasp- 

 berry). 



Rubus trivialis (white dew- 

 berry). 



Smilax medica 



Thea japonica (camellia) 



Thea sinensis (tea) 



Theobroma cacao (chocolate 

 nut). 



Vanilla planifolia (vanilla) 



Vitis labrusca (Concord grape) . 



10.5-16.5 by 3.5- 



4.5. 

 10.5-22 by 4-6... 



12-15 by 4-6 



10-22.5 by 4.5-6.. 



10-42 by 3- 



12-36 by 6-7. .. . 

 12-18 by 4-4.5.. 

 12-25.5 by 3.5-6. 



9-28 by 3-6.5.. 

 12-18 by 4.5-6.. 



12-18 by 4-6 



10.5-16.5 by 4.5-5 

 13.5-18 by 4-4.5.. 



11-17 by 4-6 



10.5-15 by 4-4.5.. 



12-22.5 by 3-4.5.. 

 13.5-18 by 4.5-5.. 



9-16 by 4.5-6.... 

 15-25.5 by 3-4... 



12-15 by 3.5-5... 

 10.5-13.5 by 4-4.5 



12-19.5 by 4-4.5. 

 12-19.5 by 4.5-5. 

 13.5-25 by 4.5-6. 

 12-21 by 5-6.... 



12-18 by 4.5-7.5. 



15-18 by 4.5-5... 

 13-18 by 4.5-6... 

 12-21 by 4.5-5... 

 13.5-16.5 by 5-6.. 

 12-18 by 4.5-6... 

 10-12.5 by 3-4... 

 14-16.5 by 4.5- 



13-19 by 5-6 



12-15 by 4.5-5... 



12-15 by 4.5-6... 



16-20 by 6 



11-21 by 5-7.5... 

 13.5-16.5 by 4.5-5 



13.5-19.5 by 4.5-6 

 13.5-24 bv 5-6... 



11-21 by 4.5-6.5. 

 12-24 by 5-7.... 



15-18 by 4.5-6... 



12-25.5 by 4.5-6 

 13-14 by 4-5... 

 12-21 bv 4.5-6... I 13.5-23 bv 4.5-5.5 



9-18 by 3-6 1 12-19 by 4.5-6. . . 



12-25.5 by 3.5-6. 



5-7.5 by2-3 | 



12-19.5 by 4.5- 



10.5-21 by 4.5-6.. 



12-18 by 4-5 



12-16.5 by 4.5-6.. 

 13-19.5 by 4-5.5.. 

 10.5-15 by 4-5... 



13.5-18 by 4.5-5. 

 12-19.5 by 4.5-5. 



10.5-18 by 4-6.5. 

 12-22.5 by 3.5-6. 



10.5-20 bv 4.5- 



12-19.5 bv 4-5.. 

 12-16 by 4.5-5.. 

 15-18 by 4.5-6 . . 

 13.5-18 by 4.5-6. 



12-24 by 4-6. 

 12-15 by 4.5. 



9-20 by 5-7.5.... 



10.5-16.5 by 3-4.5 

 15-22.5 by 4.5-6. . 



13.5-19.5 by 4-5.. 

 13.5-19.5 by 4.5-5 



12-19.5 by 4.5-6. 



12-18 by 4.5-6. 

 16.5-21 by 6. 



12-18 by 4.5-6. 



18-23 by 4.5-6. 

 13.5-19.5 by 4.5-6. 

 16-19.5 bv 4.5-6. 

 15-18 by 5-6. 

 15-21.5 by 5-6. 



12-24 by 5-5-6. 



12-19 by 4.5. 



11-18 by 4-4.5. 

 12-20 by 3-4. 



12-19.5 by 4.5. 

 13-19.5 by 5-7.5. 

 13.5-18 bv 4.5. 

 13.5-19 by 4.5-7.5. 



13.5-18 by 4.5-7.5. 



16.5-18 bv 4.5. 

 13.5-19.5 by 4.5-5. 



15-18 by 4.5-5. 



12-16.5 by 4-6. 

 10.5-24 bv 4-7.5. 

 15-24 by 4.5-7.5. 



12-21 by 4.5-8. 



Note.— The maximum and minimum measurements given could undoubtedly have been increased in 

 many instances, as no special effort was made to determine the extremes in most cases. 



THE PRODUCTION OF PERITHECIA IN GLOMERELLA. 



The production of perithecia in Glomerella is a matter of consid- 

 erable interest and importance, apparently involving some of the 

 fundamental problems of evolution and development. Why is it 

 that the full life cycle of this and various other pyrenomycetes is 

 sometimes completed in pure cultures on sterile media, while at other 

 times only conidia or pycnospores or no fructifications of any kind 



252 



