Linum aksehirense
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Ordo: Malpighiales
Familia: Linaceae
Genus: Linum
Name
Linum aksehirense Tugay & Ulukuş sp. nov. – Wikispecies link – Pensoft Profile
Diagnosis
Linum aksehirense belongs to Linum sect. Dasylinum. The new species is similar to L. pubescens but is distinguished by its spathulate lower stem leaves that are not evanescent (vs. oblong-spathulate evanescent), subequal lanceolate sepal shape (vs. subequal linear), petals 27–33 mm (vs. 18–27 mm) and petals that are blue-violet with a yellowish limb base (vs. pink with a bluish limb base).
Type
Turkey. B3 Konya; Akşehir, Sultan Mountains, slopes in Pinus nigra forest, 1150 m alt., 38°19.230'N, 31°23.181'E, 01 August 2017, O.Tugay 14.542 & D.Ulukuş (holotype KNYA, isotypes KNYA 28.229).
Description
The plant is a green annual. Flowering stems villous, erect, 22–33 cm; sterile shoots few. Lower stem leaves spathulate, not evanescent, 10–13 × 2–4 mm; median stem leaves lanceolate-elliptic, acute, 16–19 × 2–3.5 mm, 1–3 nerved. Bract (similar to median stem leaves) stipitate glandular margined, lanceolate, 14–15 × 3–3.5 mm. Cymes divaricate, lax, few-flowered; flowers 3–7 per stem; pedicels 1–2 mm, not elongated in fruit. Sepals subequal, lanceolate, 12–14 × 2–3 mm, bearing long hairs and stiputate glandular margined. Petals blue-violet (blue when dry) with a yellowish base to the limb, 27–33 mm. Capsule 5 × 5 mm diam. with 1–1.5 mm beak. Seeds elliptic-oblong, 2–2.5 × 1–1.5 mm, brown, glossy. Sculpturing of seed coat is reticulate-rugolose-ruminate (Fig. 4A–B).
Paratypes. Turkey. B3 Konya; Akşehir, slopes, 1170 m alt., 38°20'N, 31°24'E, 31 August 2011, O.Tugay 7.182 (KNYA); Akşehir, Hıdırlık, slopes, 1100 m alt., 38°19'N, 31°23'E, 01 August 2017, O.Tugay 14.520 & D.Ulukuş (KNYA).
Ecology
Linum aksehirense, which is endemic to Turkey, grows between 1100 and 1170 m elevation on slopes with Pinus nigra forest. The vegetation of this habitat is composed mainly of herbaceous and suffruticose plants including: Agrimonia eupatoria L. subsp. asiatica, Campanula lyrata Lam. subsp. lyrata, Centaurea virgata Lam., Cistus laurifolius L., Cota tinctoria (L.) J.Gay ex Guss. var. tinctoria, Digitalis ferruginea L. subsp. ferruginea, Dianthus crinitus Sm. var. crinitus, Hedysarum varium Willd. subsp. varium, Phlomis armeniaca Willd., Pinus nigra J.F.Arnold subsp. nigra, Prunus divaricata Ledeb. var. divaricata, Scabiosa rotata M.Bieb., Securigera varia (L.) Lassen, Teucrium chamaedrys L. subsp. chamaedrys and Teucrium polium L.
Phenology
The new species was observed flowering in July and collected fruiting from July to August.
Etymology
The species epithet comes from ‘Akşehir’, where the new species is found.
Proposed Turkish name for the new species
Akşehir keteni.
Distribution and conservation status
Linum aksehirense is known from three localities in Konya province, in the Irano-Turanian phytogeographic region (Fig. 1). Its area of occupancy is estimated to be less than 500 km2. The number of mature individual plants is estimated to be less than 250. Being an annual gives this new species a crucial advantage for survival against potential threats, which include the destruction of brush by locals, road construction and deterioration of habitat. Thus, according to criterion B and D, it can be included in the EN (Endangered) category (IUCN 2001[1]; 2016[2]).
Key to the species of Linum sect. Dasylinum in TurkeyPollen morphology The pollen shape of the new species was subprolate (P/E: 1.13) with a polar axis of 53.85 ± 1.75 µm (mean ± standard deviation) μm and an equatorial axis of 47.70 ± 4.70 μm. The aperture was tricolpate. The colpus was long-acute ended with a colpus length of 34.82 ± 3.26 μm and width of 12.91 ± 2.23 μm. Exine thickness was 0.5 μm and intine thickness was 0.4 μm. Exine ornamentation was densely gemmate (Fig. 5 A–C).
Original Description
- Tugay, O; Ulukuş, D; 2019: Linum aksehirense (sect. Dasylinum, Linaceae), a new species from Central Anatolia (Turkey) PhytoKeys, 136: 23-34. doi
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Other References
- ↑ IUCN (2001) IUCN Red List Categories: Version 3.1. Prepared by the IUCN Species Survial Commission. IUCN, Gland and Cambridge.
- ↑ IUCN (2016) Standards and Petitions Subcommittee. Guidelines for Using the IUCN Red List Categories and Criteria. Version 12. Prepared by the Standards and Petitions Subcommittee. http://www.iucnredlist.org/documents/RedListGuidelines.pdf
