This series of notes is, with som:e exceptions, based on collections made during the seasons of 1949 and 1950. The phytoplankton of Wisconsin lakes, particularly the Bacillariaceae, Desmidiaceae and Volvocaceae, as well as some of the filamentous algae, including Spirogyra, Zygnema anid Mougeotia, are rather frequently parasitized by chytridiaceous fungi, but determination of these forms, owing to their small size and transitory nature, is all too often highly uncertain. A. F. Bartsch, in a doctoral thesis (Univ. Wis. 1939) enititled "A Taxonomic Study of the Aquatic Chytridiales," lists for the state about twenty possible parasites, some very doubtfully so, mostly on filamnentous algae, and a few on water molds and pollen grains. Powdery mildews which did not form perithecia and are hence indetertmninable were noted oll 1) Brassica arvensis. Dane Co., Madison, September 10, 1950, and 2) Verbena hybrida (cult.). Dane Co., Madison, September 25, 1949. MICROSPHAERA ALNI (Wallr.) Wint. occasionally infects leaves of Ceanothus americanus without evidence of any particular damage to the host plants. However, in August 1949 the developing fruits of many large specimens of Ccanothus in the University of Wisconsin Arboretum at Madison were devastatingly blighted by a powdery mildew which did not form perithecia, but whicn I assume was M. alni. So heavy was the infection that, at a distance, the plants appeared to be still in full bloom, with characteristic white flower clusters. MYCOSPHAERELLA, so far undetermined, occurred in profuse development on overwintered leaves of Botrychium virginianum collected in May 1950 in the New Glarus Woods in Green Co. In my Notes XIV the immature phase of the fungus was described as being actively parasitic on the still green leaves in August 1949. The fungus appears to have had a preservative influence, since in the spring only heavily infected leaves were found, whereas in a section of the woods in which no infection was noted the previous summer, no overwintered leaves could be found. When the overwintered material was first examined it was found that, while asci had been delimited, mature ascospores were not yet formed. Accordingly, the leaves were placed in a moist chamber for 72 hours, when it was noted that well-developed ascospores had been produced. The perithecia are subglobos,e to globose, black, mostly about 60-80t diam.; the clavate asci are 7-8 x 30-40[t; the hyaline, uniseptate, slightly curved ascospores are 10-12 x 3-3.5j. There was no evidence of any welldefined imperfect stage preecding the Mycosphaerella, although in the August 1949 collection certain of the p,erithecial bodies contained bacillary microconidia about 4 x 1 u.
除了少数例外，本系列笔记是基于1949年和1950年季节的收集。威斯康星湖的浮游植物，特别是硅藻科、硅藻科和Volvocaceae，以及一些丝状藻类，包括Spirogyra、Zygnema和Mougeotia，经常被壶菌真菌寄生，但由于它们的体积小，性质短暂，对这些形式的确定往往是高度不确定的。a . F. Bartsch在他的博士论文(1939年，威斯康星大学)题为“水生壶类的分类学研究”中，为国家列出了大约20种可能的寄生虫，其中一些非常可疑，大多数寄生在丝状藻类上，还有一些寄生在水霉菌和花粉粒上。白粉病没有形成包皮，因此无法确定，在1)芸苔病中被注意到。戴恩公司，麦迪逊，1950年9月10日，2)马鞭草(邪教)。麦迪逊的戴恩公司，1949年9月25日。MICROSPHAERA ALNI(沃尔)温特。偶尔会感染美洲海鳗的叶子，但对寄主植物没有任何特别损害的证据。然而，1949年8月，麦迪逊威斯康辛大学植物园的许多大型canothus标本正在发育的果实遭到一种白粉病的毁灭性破坏，这种白粉病并没有形成周皮，但我认为是M. alni。感染是如此严重，以至于从远处看，这些植物似乎还在盛开，有典型的白色花簇。1950年5月在Green Co. New Glarus Woods采集的Botrychium virginium的越冬叶片上大量发育了MYCOSPHAERELLA，至今尚未确定。在我的笔记XIV中描述了1949年8月该真菌的未成熟阶段活跃寄生在未成熟的绿叶上。这种真菌似乎具有防腐作用，因为在春天只发现了严重感染的叶子，而在前一个夏天没有发现感染的树林里，没有发现越冬的叶子。当越冬的材料第一次被检查时，发现虽然子囊已被划分，但成熟的子囊孢子尚未形成。因此，将叶子放在潮湿的室内72小时，这时发现已经产生了发育良好的子囊孢子。周周是亚球形，e到球形，黑色，大多数约60-80吨直径;棍状腹膜为7-8 × 30-40[t;透明，单裂，略弯曲的子囊孢子大小为10-12 x 3-3.5j。虽然在1949年8月收集的某些特殊体中含有约4 × 1 μ u的细菌微分生孢子，但在此之前没有任何明确定义的不完全阶段的证据。
{"title":"Notes on Wisconsin parasitic fungi. XX.","authors":"H. C. Greene","doi":"10.2307/2422130","DOIUrl":"https://doi.org/10.2307/2422130","url":null,"abstract":"This series of notes is, with som:e exceptions, based on collections made during the seasons of 1949 and 1950. The phytoplankton of Wisconsin lakes, particularly the Bacillariaceae, Desmidiaceae and Volvocaceae, as well as some of the filamentous algae, including Spirogyra, Zygnema anid Mougeotia, are rather frequently parasitized by chytridiaceous fungi, but determination of these forms, owing to their small size and transitory nature, is all too often highly uncertain. A. F. Bartsch, in a doctoral thesis (Univ. Wis. 1939) enititled \"A Taxonomic Study of the Aquatic Chytridiales,\" lists for the state about twenty possible parasites, some very doubtfully so, mostly on filamnentous algae, and a few on water molds and pollen grains. Powdery mildews which did not form perithecia and are hence indetertmninable were noted oll 1) Brassica arvensis. Dane Co., Madison, September 10, 1950, and 2) Verbena hybrida (cult.). Dane Co., Madison, September 25, 1949. MICROSPHAERA ALNI (Wallr.) Wint. occasionally infects leaves of Ceanothus americanus without evidence of any particular damage to the host plants. However, in August 1949 the developing fruits of many large specimens of Ccanothus in the University of Wisconsin Arboretum at Madison were devastatingly blighted by a powdery mildew which did not form perithecia, but whicn I assume was M. alni. So heavy was the infection that, at a distance, the plants appeared to be still in full bloom, with characteristic white flower clusters. MYCOSPHAERELLA, so far undetermined, occurred in profuse development on overwintered leaves of Botrychium virginianum collected in May 1950 in the New Glarus Woods in Green Co. In my Notes XIV the immature phase of the fungus was described as being actively parasitic on the still green leaves in August 1949. The fungus appears to have had a preservative influence, since in the spring only heavily infected leaves were found, whereas in a section of the woods in which no infection was noted the previous summer, no overwintered leaves could be found. When the overwintered material was first examined it was found that, while asci had been delimited, mature ascospores were not yet formed. Accordingly, the leaves were placed in a moist chamber for 72 hours, when it was noted that well-developed ascospores had been produced. The perithecia are subglobos,e to globose, black, mostly about 60-80t diam.; the clavate asci are 7-8 x 30-40[t; the hyaline, uniseptate, slightly curved ascospores are 10-12 x 3-3.5j. There was no evidence of any welldefined imperfect stage preecding the Mycosphaerella, although in the August 1949 collection certain of the p,erithecial bodies contained bacillary microconidia about 4 x 1 u.","PeriodicalId":148786,"journal":{"name":"Transactions of the Wisconsin Academy of Sciences, Arts, and Letters","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1952-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133756212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The fungi referred to in this series of notes were, unless it is stated otherwise, collected during the season of 1946. Powdery mildews which fail to produce perithecia, each season attack various host plants. 'Specific identification is uncertain, but there is no question as to parasitism. On some of the hosts the organisms occur regularly in the non-fruiting stage from year to year. It seems worth while to record these where there is no previous Wisconsin record of any powdery mildew on the host concerned. Examples observed in 1946 are Pilea pumila, Dane Co., Madison, September 27; Erucastrum gallicum, Madison, September 17; Desmodium nudiflorum, Sauk Co., Devils Lake, June 26; Rhus copallina, Columbia Co., Lodi, August 6; Monarda punctata, Dane Co., Pine Bluff, August 29; Solidago sciaphila, Sauk Co., Cactus Bluff, Town of Prairie du Sac, August 23; Solidago speciosa, Madison, September 15; Solidago ulmifolia, Sauk Co., Devils Lake, August 5; Solidago patula, Waukesha Co., Hartland, September 15; Euthamia graminifolia, Madison, September 15; Aster ericoides, Madison, July 5; Helianthus rigidus, Dane Co., Westport, September 10; Rudbeckia laciniata, Sauk Co., Parfrey's Glen, July 6 (widespread infection every year on this host); Cacalia tuberosa, Madison, July 22; Lactuca ludoviciana, Madison, August 27.
除非另有说明，本系列笔记中提到的真菌是在1946年季节收集的。白粉病不能产生周孢，每个季节攻击不同的寄主植物。“具体的鉴定还不确定，但毫无疑问是寄生的。在一些寄主上，这些有机体每年都有规律地发生在不结果期。记录这些似乎是值得的，因为威斯康星州以前没有任何有关宿主白粉病的记录。1946年观察到的例子有:9月27日，麦迪逊，戴恩公司，皮莱亚·普米拉;9月17日，麦迪逊;裸花菊，索克公司，魔鬼湖，6月26日;8月6日，洛迪哥伦比亚公司Rhus copallina;8月29日，派恩布拉夫，戴恩公司Monarda punctata;8月23日，苏克公司，仙人掌崖，Prairie du Sac镇。9月15日，麦迪逊，一枝黄花;8月5日，魔鬼湖，苏克公司，杜鹃花;9月15日，哈特兰Waukesha公司的苍翠花;9月15日，麦迪逊，禾本科植物;紫菀，麦迪逊，7月5日;9月10日，丹麦公司，西港，刚性太阳花;7月6日，Parfrey's Glen, Sauk Co.， Rudbeckia laciniata(每年在该宿主上广泛感染);仙人掌，麦迪逊，7月22日;8月27日，麦迪逊。
{"title":"Notes on Wisconsin parasitic fungi. XXVI.","authors":"H. C. Greene","doi":"10.2307/2421782","DOIUrl":"https://doi.org/10.2307/2421782","url":null,"abstract":"The fungi referred to in this series of notes were, unless it is stated otherwise, collected during the season of 1946. Powdery mildews which fail to produce perithecia, each season attack various host plants. 'Specific identification is uncertain, but there is no question as to parasitism. On some of the hosts the organisms occur regularly in the non-fruiting stage from year to year. It seems worth while to record these where there is no previous Wisconsin record of any powdery mildew on the host concerned. Examples observed in 1946 are Pilea pumila, Dane Co., Madison, September 27; Erucastrum gallicum, Madison, September 17; Desmodium nudiflorum, Sauk Co., Devils Lake, June 26; Rhus copallina, Columbia Co., Lodi, August 6; Monarda punctata, Dane Co., Pine Bluff, August 29; Solidago sciaphila, Sauk Co., Cactus Bluff, Town of Prairie du Sac, August 23; Solidago speciosa, Madison, September 15; Solidago ulmifolia, Sauk Co., Devils Lake, August 5; Solidago patula, Waukesha Co., Hartland, September 15; Euthamia graminifolia, Madison, September 15; Aster ericoides, Madison, July 5; Helianthus rigidus, Dane Co., Westport, September 10; Rudbeckia laciniata, Sauk Co., Parfrey's Glen, July 6 (widespread infection every year on this host); Cacalia tuberosa, Madison, July 22; Lactuca ludoviciana, Madison, August 27.","PeriodicalId":148786,"journal":{"name":"Transactions of the Wisconsin Academy of Sciences, Arts, and Letters","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1949-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126879256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper is the fortieth which has been written in the course of the last sixty-thrce years on the general subject of the fungi which are parasitic on plants in Wisconsin. Wm. Trelease in 1885 published a preliminary list of Wisconsin paarsitic fungi. In the next half century J. J. Davis wrote twenty-six papers on this subject. Since his death in 1937 the studies have beCn continued by me. The notes in this paper, unless it is stated otherwise, refer to fungi collected durinig 1947.
{"title":"Notes on Wisconsin parasitic fungi. I.","authors":"H. C. Greene","doi":"10.2307/2421595","DOIUrl":"https://doi.org/10.2307/2421595","url":null,"abstract":"This paper is the fortieth which has been written in the course of the last sixty-thrce years on the general subject of the fungi which are parasitic on plants in Wisconsin. Wm. Trelease in 1885 published a preliminary list of Wisconsin paarsitic fungi. In the next half century J. J. Davis wrote twenty-six papers on this subject. Since his death in 1937 the studies have beCn continued by me. The notes in this paper, unless it is stated otherwise, refer to fungi collected durinig 1947.","PeriodicalId":148786,"journal":{"name":"Transactions of the Wisconsin Academy of Sciences, Arts, and Letters","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1948-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132530298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Notes on Wisconsin parasitic fungi. XXII.","authors":"H. C. Greene","doi":"10.2307/2421115","DOIUrl":"https://doi.org/10.2307/2421115","url":null,"abstract":"","PeriodicalId":148786,"journal":{"name":"Transactions of the Wisconsin Academy of Sciences, Arts, and Letters","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1945-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121882816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1126/science.1.26.728
A. W. Schorger
{"title":"A history of the Wisconsin Academy of Sciences, Arts and Letters","authors":"A. W. Schorger","doi":"10.1126/science.1.26.728","DOIUrl":"https://doi.org/10.1126/science.1.26.728","url":null,"abstract":"","PeriodicalId":148786,"journal":{"name":"Transactions of the Wisconsin Academy of Sciences, Arts, and Letters","volume":"2017 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133717598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The temperature of the bottom deposits of Lake Mendota; a chapter in the heat exchanges of the lake","authors":"E. Birge, C. Juday, H. March","doi":"10.4157/grj.5.7_641","DOIUrl":"https://doi.org/10.4157/grj.5.7_641","url":null,"abstract":"","PeriodicalId":148786,"journal":{"name":"Transactions of the Wisconsin Academy of Sciences, Arts, and Letters","volume":"150 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133551174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Phosphorus content of lake waters of northeastern Wisconsin","authors":"C. Juday, E. Birge, G. Kemmerer, R. Robinson","doi":"10.4157/grj.6.89","DOIUrl":"https://doi.org/10.4157/grj.6.89","url":null,"abstract":"","PeriodicalId":148786,"journal":{"name":"Transactions of the Wisconsin Academy of Sciences, Arts, and Letters","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115328106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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