First report of rust caused by in Iceland.

is a genus of trees and shrubs in the Rosaceae commonly known as rowan and mountain-ash. They are usually found in temperate regions of the Northern Hemisphere and cultivated as ornamental trees for parks and gardens. In September 2023, infection by a rust was observed on a single tree in Sólbrekkuskógur, Reykjanesbær (64.

in Angola, Africa-the First Record in the Eastern Hemisphere.

causes a destructive disease known as witches' broom disease of cacao (WBDC). WBDC has been responsible for major reductions in production or even total abandonment of cacao plantations in most countries that it has invaded. To date, however, the disease is known only from the cacao-producing regions of South America and a few Central American and Caribbean countries.

First report of rust on native jewelweed () in Pennsylvania.

Jewelweed ( spp., Balsaminaceae) is a common native annual plant within Pennsylvania wetland ecosystems, many of which are under threat from invasive non-native plants, and is an important wetland indicator plant (code FACW; facultative wetland). In May 2014, rust disease symptoms on native jewelweed ( Meerb.

The first USA continental record of coffee leaf rust () on coffee () in southwest Florida, USA.

Coffee leaf rust (CLR), caused by Hemileia vastatrix Berk. & Broome (Zaghouaniaceae) is considered the most significant fungal disease of Coffea arabica L. (Rubiaceae), from which berries are harvested and processed to obtain coffee beverage (Talhinhas et al.

Uromyces savulescui on statice (Limonium sinuatum) in the Americas and reevaluation of its reported geographic range.

Limonium sinuatum (Plumbaginaceae) is the most commonly cultivated recognizable cut flower crop in the genus Limonium. It is known by several common names including statice and sea lavender, due to its lilac-colored flowers and the fact that it naturally inhabits mainly coastal areas (Mellesse et al, 2013). Limonium sinuatum is native to the Mediterranean, although as a popular garden plant, has been naturalized in other parts of the world including coastal areas of California (USDA NRCS 2020).

Cytochalasans produced by and their biological activities.

The recent description of the putative fungal pathogen of greenheart trees, (Xylariaceae, Ascomycota), prompted a study of its secondary metabolism to access its ability to produce cytochalasans in culture. Solid-state fermentation of the ex-type strain on rice medium resulted in the isolation of a series of 19,20-epoxidated cytochalasins by means of preparative high-performance liquid chromatography (HPLC). Nine out of 10 compounds could be assigned to previously described structures, with one compound being new to science after structural assignment via nuclear magnetic resonance (NMR) assisted by high-resolution mass spectrometry (HRMS).

First Report of Puccinia lagenophorae on Senecio vulgaris in Pennsylvania.

Common groundsel (Senecio vulgaris L.), is an aster native to Eurasia and is now a common weed in gardens, roadsides and vacant lots worldwide. In 2001, Scholler and Toike were first to report that common groundsel was a host for the rust fungus Puccinia lagenophorae Cooke in North America (Scholler and Toike 2001).

Sapwood mycobiome varies across host, plant compartment and environments in Nothofagus forests from Northern Patagonia.

Global forests are increasingly being threatened by altered climatic conditions and increased attacks by pests and pathogens. The complex ecological interactions among pathogens, microbial communities, tree hosts and the environment are important drivers of forest dynamics. Little is known about the ecology of forest pathology and related microbial communities in temperate forests of the southern hemisphere.

Phragmidium rosae-multiflorae on Rosa multiflora reported from Pennsylvania, USA.

Rosa multiflora Thunb. is a perennial shrub native to eastern Asia. It is commonly found on habitat margins, such as forest edges, streams, and roadsides (CABI n.

First report of Uromyces rumicis on Rumex crispus in Canada.

Rumex crispus L. (curled dock) is a noxious weed in both grasslands (mainly pastures) and arable lands, but is also an early colonizer of many disturbed areas in lowland and upland regions. Rumex crispus is of agricultural significance because it competes with sown or native pasture and crops species and occupies areas that could be utilized by more palatable crop species.

First Report of Thread Blight Caused by on Cacao () in Peru.

Peru is the second largest producer of organic cocoa and one of the most important suppliers of fine aroma cocoa beans in the world (Sánchez et al. 2019). The fine aroma cocoa produced by smallholder farmers in the Bagua and Utcubamba Provinces, Amazonas Department, under the name of "Cacao Amazonas Peru", is protected by the Peruvian appellation rules (Díaz-Valderrama et al.

First Report of Southern Rust (Puccinia polysora) on Corn (Zea mays) in Michigan.

In Michigan, corn (Zea mays) is grown on 2.35 million acres with an annual production valued at $1.36 billion dollars (USDA-NASS).

Guyanagarika, a new ectomycorrhizal genus of Agaricales from the Neotropics.

A new genus and three new species of Agaricales are described from the Pakaraima Mountains of Guyana in the central Guiana Shield. All three of these new species fruit on the ground in association with species of the ectomycorrhizal (ECM) tree genus Dicymbe (Fabaceae subfam. Caesalpinioideae) and one species has been shown to form ectomycorrhizas.

Crepidotus thermophilus comb. nov., a reassessment of Melanomphalia thermophila, a rarely collected tropical agaric.

Melanomphalia thermophila (Sing.) Sing. is a rarely collected agaric previously known only from Florida and Brazil.

Two new species of Gomphidius from the Western United States and Eastern Siberia.

Study of the genus Gomphidius from recent material from Asia and North America has been carried out using traditional taxonomy combined with molecular systematics. Two new species of Gomphidius (G. borealis and G.