First report of Carex macrocephala in eastern North America with notes on its co-occurrence with Carex kobomugi in New Jersey1

2007 ◽  
Vol 134 (1) ◽  
pp. 126-134 ◽  
Author(s):  
Louise Wootton
Keyword(s):  
North America ◽  
Eastern North America ◽  
First Report ◽  
Carex Kobomugi

First Report of Powdery Mildew of Platanus occidentalis caused by Microsphaera platani (Erysiphe platani) in Washington State

2003 ◽  
Vol 4 (1) ◽  
pp. 33 ◽  
Author(s):  
Dean A. Glawe
Keyword(s):  
North America ◽  
Powdery Mildew ◽  
Native Species ◽  
Washington State ◽  
Eastern North America ◽  
First Report ◽  
Platanus Occidentalis

American sycamore (Platanus occidentalis L.) is a common native species in eastern North America and is planted widely as a landscape tree in other regions. During a survey of powdery mildew diseases in Washington State, the fungus Microsphaera platani Howe was found on American sycamore trees in Madison Park, Seattle. This report documents the presence of M. platani in Washington State and presents information on the fungus. Accepted for publication 30 July 2003. Published 18 August 2003.

The youngest styliolines and nowakiids (Late Devonian) currently known from New York

1986 ◽  
Vol 60 (3) ◽  
pp. 689-700 ◽  
Author(s):  
Ellis L. Yochelson ◽  
William T. Kirchgasser
Keyword(s):  
New York ◽  
North America ◽  
Wall Structure ◽  
Eastern North America ◽  
Late Devonian ◽  
Appalachian Region ◽  
The West ◽  
First Report

This is the first report of styliolines in the Angola Shale Member of the West Falls Formation in western New York. These specimens are of late Frasnian age and are the youngest individuals known from the Appalachian Region. This upward extension of range places the extinction of styliolines in eastern North America more in accord with their time of extinction in Europe. Nowakiids have also been found in the younger Hanover Shale Member, in the upper part of the Java Formation, also of late Frasnian age. These are the youngest known nowakiids from the Appalachians. Within the limits of preservation, the external characters and wall structure of the Angola styliolines are comparable with those of older specimens. The associated rare small annulated nowakiids and homotcenids have a laminated wall structure fundamentally different from that of the styliolines.

scholarly journals First Report of Melampsora larici-populina on Populus spp. in Eastern North America

Plant Disease ◽  
2004 ◽  
Vol 88 (1) ◽  
pp. 85-85 ◽  
Author(s):  
L. Innes ◽  
L. Marchand ◽  
P. Frey ◽  
M. Bourassa ◽  
R. C. Hamelin
Keyword(s):  
North America ◽  
Ribosomal Rna ◽  
Leaf Surface ◽  
Hybrid Poplar ◽  
Western United States ◽  
Eastern North America ◽  
First Report ◽  
Melampsora Medusae ◽  
Abaxial Leaf Surface ◽  
Forest Biology

In September 2002, yellow spots were observed on the leaf surface of a hybrid poplar (Populus maximowiczii Henry × P. balsamifera L.) grown at the Berthier forest nursery (46°2′N, 73°11′W) in the St. Lawrence Valley (Lanaudière Region, Québec, Canada). Disease severity was low, but the pathogen was present on a hybrid that was previously thought to be resistant to Melampsora medusae Thuem, the only reported poplar rust in eastern North America. Uredinia typical of a Melampsora sp. were observed on the abaxial leaf surface. The observed urediniospores were longer (32 to 48 μm) than the expected range for M. medusae (23 to 35 μm) and possessed an apical bald spot; thick paraphyses were also observed. These characteristics are diagnostic of M. larici-populina Kleb (2). Samples were deposited in the National Mycological Herbarium of Canada (DAOM 232107 and 232108) and in the Quebec Forest Biology Herbarium (QFB14703 and 14704). DNA was extracted from uredinia, and the internal transcribed spacer (ITS) of the ribosomal RNA gene was amplified and sequenced (GenBank Accession Nos. AY429656 and AY429657). There was a 100% match between the two sequences obtained and that of M. larici-populina (GenBank Accession No. AY375267), but there was approximately 12% divergence with the ITS sequence of M. medusae (GenBank Accession No. AY375273-5). This is the first report of M. larici-populina in eastern North America. This fungus was reported on P. trichocarpa × P. deltoides hybrids in the western United States in the early 1990s (1). It appears that M. larici-populina can overwinter in Québec because it was observed again at the nursery in September 2003. The occurrence of M. larici-populina in eastern North America has direct implications for the poplar industry since the host specificities of M. medusae and M. larici-populina differ; P. balsamifera and P. maximowiczii are sensitive to M. larici-populina (3). Hybrids with P. balsamifera or P. trichocarpa components may be particularly at risk. References: (1) G. Newcombe and G. A. Chastagner. Plant Dis. 77:532, 1993. (2) J. Pinon. Eur. J. For. Pathol. 3:221, 1973. (3) J. Pinon. Silvae Genet. 41:25, 1992.

Paleoecological significance of a turritelline gastropod-dominated assemblage in the Cretaceous of South Carolina

1993 ◽  
Vol 67 (3) ◽  
pp. 355-360 ◽  
Author(s):  
Warren D. Allmon ◽  
James L. Knight
Keyword(s):  
South Carolina ◽  
North America ◽  
Eastern North America ◽  
First Report ◽  
Fossil Assemblage ◽  
Lee County ◽  
Sandy Limestone ◽  
The Matrix

Blocks of sandy limestone dredged from the bottom of a quarry in eastern Lee County, South Carolina, contain a turritelline gastropod-dominated macrofossil assemblage, including age-diagnostic Maastrichtian ammonites. Although turritelline-dominated assemblages are common in other areas and ages, this is the first report of such an assemblage of any age from South Carolina and the first Cretaceous turritelline-dominated assemblage from eastern North America. Whereas the matrix of the turritelline layer is calcareous, the carbonate is present only as cement and the fossil assemblage did not form in a typically carbonate-dominated environment. This fact agrees with the observed absence of “turritella limestones” in the Cretaceous. Such limestones are common in the Paleogene but absent in the Neogene. This pattern is consistent with the hypothesis that turritellines as a group have become less thermophilic since the Cretaceous.

First report of the post-fire morel Morchella exuberans in eastern North America

Mycologia ◽  
2017 ◽  
pp. 1-5
Author(s):  
Andrew N. Miller ◽  
Daniel B. Raudabaugh ◽  
Teresa Iturriaga ◽  
P. Brandon Matheny ◽  
Ronald H. Petersen ◽  
...  
Keyword(s):  
North America ◽  
Eastern North America ◽  
First Report

First report of carp edema virus in the mortality of wild common carp Cyprinus carpio in North America

2018 ◽  
Vol 131 (3) ◽  
pp. 177-186 ◽  
Author(s):  
J Lovy ◽  
SE Friend ◽  
L Al-Hussinee ◽  
TB Waltzek
Keyword(s):  
North America ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
First Report ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio

The Identification and Study of Indian Shell Middens in Eastern North America: 1643–1861

1986 ◽  
Vol 6 (3) ◽  
pp. 227-243 ◽  
Author(s):  
Andrew L. Christenson
Keyword(s):  
Nineteenth Century ◽  
Civil War ◽  
North America ◽  
East Coast ◽  
Eastern North America ◽  
Shell Midden ◽  
Shell Middens ◽  
Work Done

Although the interest in shell middens in North America is often traced to reports of the discoveries in Danish kjoekkenmoeddings in the mid-nineteenth century, extensive shell midden studies were already occurring on the East Coast by that time. This article reviews selected examples of this early work done by geologists and naturalists, which served as a foundation for shell midden studies by archaeologists after the Civil War.

Sign in / Sign up

Export Citation Format

Share Document