TAILIEUCHUNG - The flora of Bitlis river valley

This paper describes a floristic study of Bitlis river basin. The research was carried out from 2001 and 2003 to 2150 vascular plant specimens were collected. After the identification of the specimens, the flora was determined to include 925 taxa (at specific and infraspecific ranks) belonging to 770 species, 386 genera and 85 families. | Turk J Bot 29 2005 355-387 TOBlTAK Research Article The Flora of Bitlis River Valley Abdullah ALTIOK LOtfi BEHỌET Yũzũncũ Yil University Faculty of Science and Arts Department of Biology 06580 Van - TURKEY Received Accepted Abstract This paper describes a floristic study of Bitlis river basin. The research was carried out from 2001 and 2003 to 2150 vascular plant specimens were collected. After the identification of the specimens the flora was determined to include 925 taxa at specific and infraspecific ranks belonging to 770 species 386 genera and 85 families. One hundred and seventy-nine taxa were defined as new records for the B9 square. The endemism rate of the area is based on 63 taxa. The largest families are Asteraceae 109 taxa Fabaceae 101 taxa and Poaceae 77 taxa . The largest genera are Trifolium L. 27 Astragalus L. 22 and Silene L. 18 . The phytogeographic elements are represented in the study area as follows Irano-Turanian 292 Mediterranean 81 and Euro-Siberian 46 . When the flora of the area is analysed by Raunkiaer s life form system the results are as follows hemicryptophytes 345 therophytes 308 chamaephytes 103 cryptophytes 101 and phanerophytes 68 . The descriptions of 29 species in our study were different in terms of some characteristics from the descriptions in the Flora of Turkey and in some cases from the flora of neighbouring countries. Key Words Flora Bitlis Turkey Bitlis ayi Vadisi Florasi Ozet Bitlis ayi Havzasinin Floras bu paligmada sunulmugtur. 2001-2003 yillari arasinda gerpeklegtirilen bu aragtirma esnasinda 2150 vaskuler bitki õrnegi toplandi. toplanan õrneklerin teghisi sonucu 770 tur 386 cins ve 85 familyaya ait toplam 925 takson belirlendi. 179 taksonun B9 karesi ipin yeni kayit oldugu ortaya kondu. Alandan 63 endemik taksonun yayiligi kaydedildi. En bũyũk up familya Asteraceae 109 takson Fabaceae 101 takson ve Poaceae 77 takson dir. En bũyũk cinsler Trifolium L.

• Nông nghiệp
• Bitlis river valley
• Phytogeographic elements
• Flora of Turkey
• Silene L
• Raunkiaer’s life form system