6 CONTENTS. 



Studies of Glomerella from different hosts — Continued. Page. 



Hedyscepe sp. (palm) 36 



Ligustrum vulgare L. (privet) 36 



Development on leaves and stems in moist chamber 36 



Cultures 37 



Malus sylvestris Mill, (apple) 38 



Cultures 39 



Chromogenic form 39 



European form 41 



Mangifera sp. (mango) 42 



Maranta arundinacea L. (arrowroot) 42 



Musa paradisiaca sapientum (L.) Kuntz. (banana) 43 



Oxycoccus macrocarpus (Ait.) Pers. (cranberry) 43 



Persea gratissima Gaertn. f. (avocado) 44 



Development on leaves in moist chamber 44 



Cultures 44 



Phaseolus vulgaris L. (wax bean) " 46 



Phormium tenax Forst 47 



Pimenta acris (Swartz) Kostel. (wild clove) 48 



Piper macrophyllum Swartz (pepperwort) 48 



Pitcaimia corallina Linden 49 



Psidium guajava L. (guava) 49 



Development on leaves in moist chamber 49 



Cultures 50 



Ribes oxyacanthoides (gooseberry) 51 



Rubus occidentalis L. (black raspberry) 52 



Rubus trivialis Michx. (white dewberry) 52 



Smilax medica Schl. and Cham 53 



Thea japonica (L.) Baill. (camellia) 53 



Development on leaves in moist chamber 53 



Cultures 53 



Thea sinensis L. (tea) 54 



Development on leaves in moist chamber 54 



Cultures 54 



Theobroma cacao L. (chocolate nut) 55 



Vanilla planif olia Andrews (vanilla) 56 



Vitis labrusca L. (Concord grape) 56 



Miscellaneous 57 



Pedigreed cultures of Glomerella cingulata from avocado 58 



First series of seven generations started from a single ascospore 58 



Conidial generations from the same host 59 



Occurrence of setse and perithecia in Glomerella 61 



Variability of Glomerella 63 



Conidia 64 



Setse 64 



Appressoria, or chlamydospores 64 



Yeast and other forms 64 



Perithecia 65 



Asci 65 



Ascospores 66 



Paraphyses 66 



Host relations 66 



Causes of variations 66 



The production of perithecia in Glomerella 68 



252 



