Thursday, November 30, 2017

[Botany • 2017] Peucedanum guvenianum • A New Species (Apiaceae) from West Anatolia, Turkey

Peucedanum guvenianum Yıldırım & H.Duman

Yildirim & Duman, 2017. DOI: 10.3906/bot-1701-56 

Peucedanum guvenianum Yıldırım & H.Duman is described as a species new to science. It is endemic to the West Anatolia region of Turkey. It is known from a single locality in İzmir Province. P. guvenianum shows similarities to P. longifolium, P. ruthenicum, and P. vourinense. Diagnostic morphological characters are discussed and compared with those of closely related taxa. It is easily distinguished from related species especially by its stem 130-220 cm tall, distinctly striate, densely branched from below the middle to upper part; basal leaves 28-40 cm long and 20-70 cm wide; bracts linear-lanceolate and erect; petals emarginate at apex; mericarp 7.2-14 x 4.3-8 mm, oblong to oblong-orbicular, ±± two times longer from pedicel.

Peucedanum guvenianum Yıldırım & H.Duman sp. nov. 

Diagnosis: P. guvenianum is related to P. ruthenicum, P. longifolium, and P. vourinense. It differs from these species especially by its stem 130–220 cm tall, distinctly striate, densely branched from below the middle to upper part (not maximum to 120 cm tall, slightly striate, slightly or densely branched from above the middle); basal leaves 28–40 cm long and 20–70 cm wide (not 5–30 long and 10–20 wide); bracts linear-lanceolate and erect (not filiform and deflexed); petals emarginate at apex (not without emarginate apex or slightly emarginate at apex); mericarp 7.2–14 × 4.3–8 mm, ±two times longer from pedicel (not 4.5–9 × 3–4 mm, ±equal or slightly shorter).

Etymology: The new species was named in honor of Turkish botanist Prof Dr Güven Görk, who is an expert on the flora of Turkey. The Turkish name of this species is given as “Eferezenesi”, according to the guidelines of Menemen et al. (2013).

Figure 2. Peucedanum guvenianum: A- Habitus; B- flowers and umbel; C- immature fruits; D- mature fruits; E- stages of budding to mature fruit.

Distribution and ecology: Peucedanum guvenianum is locally endemic to İzmir Province, West Anatolia. It is an element belonging to the Mediterranean floristic region. The new species grows in the maquis vegetation and opening Pinus brutia area, between 220 and 270 m a.s.l. in the triangle of the Seferihisar, Menderes, and Gümüldür districts in İzmir. Species growing in the near vicinity include Arbutus andrachne L., Arbutus unedo L., Asparagus acutifolius L., Centranthus calcitrapa (L.) Dufr., Cerotonia siliqua L., Cistus creticus L., Dittrichia viscosa (L.) Greuter, Lavandula stoechas L. subsp. stoechasLavetera puctata All., Lonicera caprifolium L., Lupinus micranthus Guss., Origanum onites L., Osyris alba L., Phillyrea latifolia L., Pistacia lentiscus L., Satureja thymbra L., and Verbascum rupicola (Hayek et Siehe) Hub.-Mor

Hasan Yildirim and Hayri Duman. 2017. Peucedanum guvenianum (Apiaceae), A New Species from West Anatolia, Turkey.  Doga, Turkish Journal of Botany. 41(6); 600-608.  DOI: 10.3906/bot-1701-56

Turkish scientists discover new plant species endemic to Izmir

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