ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020803

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020804

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020805

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor

摘要:

SUMMARYAllomyces arbusculahas a rather wide geographic distribution, having been found in the United States, Mexico, the West Indies, Costa Rica, Brazil, Argentina, China, and South Africa. Isolates from the various localities appear to be very constant in the characters of their resistant sporangia and gametangia.Allomyces javanicusis reported for the first time in the western hemisphere, from collections in Mexico, Texas, and the southwestern United States.Allomyces cystogenusis reported for the first time from North America, from Arizona, andRozella Allomycis, a parasite ofA. arbuscula, has been found to occur in Argentina and Brazil.It is suggested that the two long cycled species,A. arbusculaandA. javanicus, can be very conveniently separated on the basis of resistant sporangial size.

ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020806

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020807

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor

摘要:

SUMMARYThe presence and distribution ofGonatorrhodiella Highlei A.L. Smith, one of the rarer members of the Fungi Imperfecti collected originally in England on onion bulbs, are reported for the first time in the United States.G. Highleiis particularly interesting not only because of its unusual morphology, but also because of its association withNectria coccinea, which together withCryptococcus Fagiis concerned with the beech bark disease of our native beech (Fagus grandifolia) in New England.A comparison ofGonatorrhodiella Highleiwas made withG. parasiticaand other species of this genus. As a result of these studies, it was concluded that at present there are only two valid species ofGonatorrhodiella, G. parasiticaandG. Highlei, known. Two other species have been described, butG. eximiaseems to be synonymous withG. parasitica, whileG. coccorumis not a member of the genus.Gonatorrhodiella Highleiproduced only a scant mycelial growth and a few conidiophores on synthetic malt and only a trace of vegetative growth on potato, potato-dextrose, and malt agars. But it grew luxuriantly and produced an abundance of conidiophores on a medium consisting of 20 grams of oatmeal and 60 cc. of distilled water.When planted withNectria coccinea, N. galligena, orN. cucurbitulaon potato, potato-dextrose, or malt-extract agar,Gonatorrhodiella Highleigrew abundantly and produced numerous fertile hyphae. It failed to grow, however, when it was planted on the same media with eitherN. CoryliorN. cinnabarina.

ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020808

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor

摘要:

SUMMARY(1)This paper describes the developmental morphology of a species ofCoprinusclose to, if not identical withC. cubensis.The organism was isolated from Costa Rican soil and is particularly adaptable for physiological study.(2)At the time of its isolation from natural conditions this organism will fruit in flask cultures on potato-dextrose agar in nine days under the proper environmental conditions.(3)Stages in the development of the fruit body are similar to those of other investigated species of the genus.(4)Examination of the buttons that would have produced typical sporophores reveals an annular prelamellar cavity and the lamellae of such buttons originate in the manner described by Atkinson for otherCoprini.(5)Some of the buttons that never mature in agar cultures apparently do not form an annular prelamellar cavity and lamellae are not differentiated in the same manner as in the normal button. The writer believes that these are abnormalities which have resulted from the conditions that failed to bring about the production of normal sporophores.(6)The developmental study of this species indicates its close relationship toCoprinus tomentosus.

ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020809

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020810

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020811

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor

摘要:

SUMMARY1.Eight species and one form of the genusAphanomyces, from a number of collections, have been studied critically to determine those characteristics which serve to demarcate most clearly the various species.2.At the present time the oöspore characters appear to offer the most reliable criteria for the separation of the species studied.3.Aphanomyces helicoidesMinden is reported for the first time from America.4.A species ofAphanomyces, A. Sparrowii, parasitic onNitella, is described.5.A species ofAphanomycesmost closely related toA. parasiticus, but differing in its saprophytic nature and smaller dimensions, is described asA. amphigynus.6.A form ofA. laeviswhich differs from the species in the much smaller dimensions of oögonia and oöspores and in the diverticulate nature of the antheridial cluster is discussed.In closing, the writer takes great pleasure in expressing his deep appreciation to Dr. F. K. Sparrow, Jr., who has given generously of both time and materials and under whose direction this study was carried out. He is also indebted to Mrs. Lucy Olson, who prepared the Latin diagnoses contained in this paper, and to the Department of Botany of the University of Michigan, who extended the privileges of their laboratories.

ISSN:0027-5514    

DOI:10.1080/00275514.1941.12020812

出版商:Taylor&Francis    

年代:1941

数据来源: Taylor