This paper reports the re-discovery of Barbarea auriculata Hausskn. ex Bornm. var. auriculata (Brassicaceae), Onobrychis nitida Boiss. (Fabaceae), Onosma discedens Hausskn. ex Bornm. (Boraginaceae), and Silene oligotricha Hub. All of these taxa had been listed as Extinct (EX), according to the World Conservation Union Red List Categories. | Research Note Turk J Bot 33 (2009) 113-122 © TÜBİTAK doi: The Rediscovery of Some Taxa Thought to Have Been Extinct in Turkey Ali KANDEMİR Erzincan University, Education Faculty, 24030 Erzincan - TURKEY Received: Accepted: Abstract: This paper reports the re-discovery of Barbarea auriculata Hausskn. ex Bornm. var. auriculata (Brassicaceae), Onobrychis nitida Boiss. (Fabaceae), Onosma discedens Hausskn. ex Bornm. (Boraginaceae), and Silene oligotricha . (Caryophyllaceae). All of these taxa had been listed as Extinct (EX), according to the World Conservation Union Red List Categories. This study provides the re-descriptions of these taxa, presents field observations of these taxa, and suggests new IUCN categories. Key Words: Local endemic, Barbarea, Onosma, Onobrychis, Silene, Turkey Türkiye’de Yok Olduğu Düşünülen Bazı Türlerin Yeniden Toplanması Özet: Bu çalışmada, Dünya Doğayı Koruma Birliği Kırmızı Liste Kategorilerine göre yok olduğu düşünülen (EX) Barbarea auriculata Hausskn. ex Bornm. var. auriculata (Brassicaceae), Onobrychis nitida Boiss. (Fabaceae), Onosma discedens Hausskn. ex Bornm. (Boraginaceae) ve Silene oligotricha . (Caryophyllaceae) türlerinin yeniden toplandığı rapor edilmiştir. Türlerin deskripsiyonları yeniden yazılmış, türlere ait bazı gözlemlere yer verilmiş ve türler için yeni IUCN kategorileri önerilmiştir. Anahtar Sözcükler: Dar endemik, Barbarea, Onosma, Onobrychis, Silene, Türkiye Introduction Turkey has the richest flora in the temperate zone, with approximately 10,000 vascular plants. Along with its rich flora, it also has a wide diversity of habitats; however, the unique flora and habitats of Turkey are threatened and have rapidly declined during the last 40 years (Özhatay, 2006). Measuring the level of threat to plant and animal species is very important to conservation efforts. The IUCN Red List categories and criteria, which were designed by The World Conservation Union
