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Biogeographic divergences in the Iberian flora. A morpho-anatomic,ISSR-based, and environmental study of Iberian Buxus sempervirens L.
MÁRCIA CARVALHO, JOÃO ROCHA, VALDEMAR CARNIDE, SANDRA MARTINS, MAURICI MUS, FRANCISCO AMICH, RUBIM ALMEIDA, CLAÚDIA MACHADO, BERTA GONÇALVES, EUNICE BACELAR, and ANTONIO CRESPI
Pages 1-16

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Exogenous nitric oxide protects against drought-induced oxidativestress in Malus rootstocks
LINSEN ZHANG, XUEWEI LI, XIFENG LI, ZHOU WEI, MINGYU HAN, LIXIN ZHANG, and BINGZHI LI
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Betalains and expression of antioxidant enzymes during development andabiotic stress in Rivina humilis L. berries
MOHAMMAD IMTIYAJ KHAN, AVINASH KUMAR, and PARVATAM GIRIDHAR
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Relationships between some endogenous signal compounds and the antioxidantsystem in response to chilling stress in maize (Zea mays L.) seedlings
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Leaflet trichome micromorphology in the Dolentes-Brevipedes taxonomic complex (Mimosa L., Mimosoideae)
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Characteristics of desert vegetation along four transects in the aridenvironment of southern Egypt
FAWZY SALAMA, MONIER ABD EL-GHANI, MOHAMED GADALLAH, SALAH EL NAGGAR, and AHMED AMRO
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Astragalus topalanense (Fabaceae), a new species from Turkey
AHMET İLÇİM and LÜTFİ BEHÇET
Pages 74-80

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Astragalus unalii (Fabaceae), a new species from Turkey
ÖMER ÇEÇEN, ZEKİ AYTAÇ, and HÜSEYİN MISIRDALI
Pages 81-86

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New species and a synonym of the genus Hesperis (Brassicaceae) from Turkey
AHMET DURAN and ÖZLEM ÇETİN
Pages 87-96

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A new species of Cyathus (Agaricaceae) from India
KANAD DAS, MANOJ EMANUEL HEMBROM, ARVIND PARIHAR, and RUI LIN ZHAO
Pages 97-103

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Cladonia trapezuntica (Cladoniaceae, lichenized Ascomycota): a robust morphotype of Pycnothelia papillaria, a taxonomic study with conservational survey
AYHAN ŞENKARDEŞLER, DEMET CANSARAN DUMAN, LASZLO LÖKÖS, and TEUVO AHTI
Pages 104-111

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External morphological variations and temporal distribution of the dinoflagellate Ceratium hirundinella in two dam reservoirs in the Tigris River basin (Turkey)
MEMET VAROL
Pages 112-119