Onosma alburzensis (Boraginaceae), a new species from Central Alburz Mountains North Iran

Document Type : Research Paper

Authors

1 Central Herbarium of Tehran University, School of Biology, College of Science, University of Tehran, Iran

2 Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

3 Department of Biology, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Iran

Abstract

A new species of genus Onosma is described from Central Alburz Mountains, N. Iran. Onosma alburzensis is placed in the sect. Onosma subsect. Asterotricha (Boiss.) Gürke based on its stellate-hairy tubercles. Its closest taxon is Onosma cardiostegia Bornm., which is distributed in the west of Iran, and differs from it by the shape and size of bracts and sepals, indumentum type, indumentum of the corolla, as well as distribution range. The new species is the first taxon of subsect. Asterotricha, which is present out of the previous distribution range. The ecology, distribution, and conservation status of the new species are noted. Also, illustrations and a distribution map of the new species and its relative are presented.

Keywords


Article Title [Persian]

Onosma alburzensis، گونه جدیدی از کوههای البرز مرکزی از شمال ایران

Authors [Persian]

  • فریده عطار 1
  • محمد امینی‌راد 2
  • منصور میرتاج‌الدینی 3
1 استاد دانشکده زیست‌شناسی، پردیس علوم، دانشگاه تهران، تهران، ایران
2 مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی،‌ تهران، ایران
3 دانشیار گروه زیست‌شناسی، دانشگاه شهید باهنر کرمان، کرمان، ایران
Abstract [Persian]

گونه جدیدی از جنس Onosma از کوههای البرز مرکزی از ایران شرح داده می‌شود. Onosma alburzensis با توجه به داشتن غده‌های کرک‌دار در قاعده کرکهای زبر بلند در زیربخش Asterotricha قرار می‌گیرد. این گونه با Onosma cardiostegia در شکل و اندازه برگک‌ها و کاسبرگ‌ها، نوع کرک‌پوش، کرکهای بیرونی جام گل و همچنین پراکنش جغرافیایی تفاوت دارند. این گونه اولین آرایه از زیربخش Asterotricha است که خارج از محدوده جغرافیایی این زیربخش دیده شده است. اکولوژی، پراکنش و وضعیت حفاظتی گونه بحث می‌شود. همچنین، نقشه پراکنش، تصویر گیاه و سایر اطلاعات این گیاه ارائه شده است.

Keywords [Persian]

  • Boraginaceae
  • Onosma
  • north of Iran
  • sect. Onosma
  • subsect. Asterotricha
  • Alburz
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