Suillelus genus is represented by 20 species which are generally edible. In the present study, specimens of Suillelus genus (Suillellus amygdalinus) were collected from Hakkari province, in 2014 and recorded for the first from Turkey. Short depiction and the photographs of the determined species was given and discussed briefly.

New specimens of two previously recorded hypogeous basidiomycete species, Alpova diplophloeus (Zeller & C.W. Dodge) Trappe & A.H. Sm. and Schenella pityophila (Malençon & Riousset) Estrada & Lado, were collected from Eastern Black Sea and Central Anatolian regions, and reported for the second time from Turkey. New distribution localities and brief descriptions of the species were provided together with the photographs related to their macro and micromorphologies.

The small agaric, Mycena ustalis Aronsen & Maas Geest. (Mycenaceae), is given as new record from Turkey. The macro and micromorphological photographs of the species and a brief description of the species are provided

This study was carried out on wild edible macrofungi samples, collected within the boundaries of Gürpinar (Van) district between 2016 and 2017. As a result of necessary investigations related to macro and micromorphologies of the samples, 36 wild edible macrofungi species belonging to 11 families and 4 orders were determined. Eight of them belong to the phylum Ascomycota and 28 to Basidiomycota. Among the determined taxa Agaricus bisporus, A. campestris, A. urinascens, Pleurotus eryngii, P. ostreatus and P. populinus are collected and consumed by locals. Pleurotus eryngii is the only economically important macrofungi in the region.

e aim of this study is to investigate the multiple and rapid production of Pogostemon erectus (Dalzell) Kuntze by tissue culture techniques. The shoot tip and nodal explants of P. erectus were isolated and then cultured in Murashige and Skoog (1962) (MS) nutrient media containing thidiazuron (TDZ) and 2,4-Dichlorophenoxyacetic acid (2,4-D) in different combinations. The first shoot formation on the explants was observed on day 15. The number of shoots per explant ranged from 2.85 to 29.39 in the shoot tip explants and from 2.72 to 32.24 in the nodal explants. The maximum number of shoots per explant was obtained in the MS medium containing 0.20 mg/L TDZ + 0.10 mg/L 2,4-D for shoot tip explant (29.39) and in the MS medium containing 0.10 mg/L TDZ + 0.10 mg/L 2,4-D for nodal explant (32.24). The longest shoots in the shoot tip (1.76 cm) and nodal (1.64 cm) explants were determined in MS medium supplemented with 0.10 mg/L TDZ + 0.10 mg/L 2,4-D. Regenerated shoots were rooted in MS medium supplemented with 0.25 mg/L indol-3yl acetic acid (IAA), and then acclimatized to aquarium conditions.

The aim of this study is to investigate the multiple and rapid production of Pogostemon erectus (Dalzell) Kuntze by tissue culture techniques. The shoot tip and nodal explants of P. erectus were isolated and then cultured in Murashige and Skoog (1962) (MS) nutrient media containing thidiazuron (TDZ) and 2,4-Dichlorophenoxyacetic acid (2,4-D) in different combinations. The first shoot formation on the explants was observed on day 15. The number of shoots per explant ranged from 2.85 to 29.39 in the shoot tip explants and from 2.72 to 32.24 in the nodal explants. The maximum number of shoots per explant was obtained in the MS medium containing 0.20 mg/L TDZ + 0.10 mg/L 2,4-D for shoot tip explant (29.39) and in the MS medium containing 0.10 mg/L TDZ + 0.10 mg/L 2,4-D for nodal explant (32.24). The longest shoots in the shoot tip (1.76 cm) and nodal (1.64 cm) explants were determined in MS medium supplemented with 0.10 mg/L TDZ + 0.10 mg/L 2,4-D. Regenerated shoots were rooted in MS medium supplemented with 0.25 mg/L indol-3yl acetic acid (IAA), and then acclimatized to aquarium conditions.

The bioaccumulation of metalloids especially arsenic (As) concentrations in urban and suburban environments and bioaccumulation of As in natural and exotic tree and shrub species are not well-documented. One of the most significant sources of As are vehicular emissions and coal combustion. The bioaccumulation of As in some natural and exotic tree and shrub species in Samsun and Atakum in Central Black Sea Region of Turkey is studied. Most of the studies about As pollution were carried out in heavily polluted environments such as lead smelters. However, high As concentrations were found for some natural and exotic tree and shrub species in urban and suburban environments in this study. It has been found that M. grandiflora twigs had the highest As concentrations in all of the studied species. Leaf As concentrations were found to be high in E. camaldulensis, P. abies, A. cyanophylla, C. vitalba, and L. vulgare as compared to twigs and flowers, while twigs of O. europaea and M. grandiflora had high As concentrations in Samsun center. E. camaldulensis and A. cyanophylla had high As concentrations in their leaves in Atakum similar to Samsun city center. M. grandiflora twigs and L. vulgare leaves can be used for biomonitoring studies due to high As concentrations in their tissues.

In this study, karyotype analyses of three species belonging to the genus Sisymbrium L. (Brassicaceae) and grown naturally in Turkey were conducted. These taxa are S. officinale (L.) Scop., S. runcinatum Lag. ex DC. and S. orientale L. The somatic chromosome number of 2n = 14 was reported for all species. Total chromosome lengths are between 1.33 and 2.43 µm in S. officinale, 1.30 and 2.48 µm in S. orientale, 1.02 and 2.18 µm in S. runcinatum. The karyotypes are as follows: S. officinale consists of 12m + 2sm, S. orientale consists of 10m + 4sm and S. runcinatum consists of 10m + 4sm chromosome pairs. S. runcinatum is the most asymmetrical karyotype based on all index values