Research Article |
Corresponding author: Mehmet Fırat ( kuyucak65@yahoo.com ) Academic editor: Alan Paton
© 2015 Mehmet Fırat.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Fırat M (2015) Verbascum kurdistanicum (Scrophulariaceae), a new species from Hakkâri, Turkey. PhytoKeys 52: 89-94. https://doi.org/10.3897/phytokeys.52.5188
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Verbascum kurdistanicum Fırat (Scrophulariaceae), is described and illustrated as a new species that is located in Hakkâri, Turkey. In this study, diagnostic morphological characters of this and closely related species (V. oreophilum K.Koch and V. pyramidatum M. Bieb) are discussed. Furthermore, distribution maps for the three taxa are provided.
New species, Hakkâri, Turkey, Verbascum
Verbascum L. (Scrophulariaceae) includes about 360 species distributed throughout the world (
Verbascum is divided into two sections (
The first revision of Turkish Verbascum for Flora of Turkey was carried out by
During field exploration in Hakkâri province, Turkey in 2011, an unusual population of Verbascum was discovered. At first glance, because of having corolla and capsule with branched eglandular hairs, glandular-hairy inflorescence and distinctly crenate lower leaves it seemed to be similar to V. oreophilum and V. pyramidatum. The specimens were cross-checked with the keys provided by
TURKEY. C9 Hakkâri: Berçelan Plateau, 37°40’57”N, 043°43’21”E, 2600–2800 m, limestone rocks and steppe, 21 July 2011, M. Fırat. 27584. (Holotype: VANF, Isotype: ANK, GAZI, HUB, VANF, E).
Verbascum kurdistanicum differs from V. oreophilum and V. pyramidatum by being biennial; having 8-30 (incl. petiole) × 2.5-4.5 cm, lanceolate, crenate basal leaves; linear-lanceolate calyx lobes; 4 stamens; two anterior filaments that are glabrous near apex; 10-15 × 6-8 mm, ovate to oblong capsule.
Biennial, 35–170 cm, densely stellate below, sparsely stellate, densely stalked glandular above. Stem robust, terete, erect, branched. Basal leaves 8–30 (inc. petiole) × 2.5–4.5 cm, mostly congested at base, densely rosulate, lanceolate, entire, distinctly undulate, obtuse, gradually attenuate at base. Cauline leaves 2.5–4 × 0.5–1 cm, oblong-lanceolate, entire, acute, decreasing in size towards the inflorescence racemose, ascending-erect. Bracts 2–3 × 1–2 mm, ovate-lanceolate, entire, acute, each bract with a solitary flower. Pedicels 5–10 mm. Bracteoles absent. Calyx 3–10 mm, divided almost to base, with linear-lanceolate acute lobes. Corolla 20–30 mm diam, yellow, tube 1–2 mm, with unequal and orbicular lobes, without pellucid-punctate glands, with sparsely stalked glandular, stellate outside. Stamens 4, 6–8 mm, filaments 5–6 mm, with purple-violet wool, two anterior glabrous near apex, anthers 1–2 mm, reniform. Ovary ovate. Style 5–7 mm, filiform. Stigma spathulate. Capsule 10–15 × 6–8 mm, ovate, densely stellate hairs, rarely soon glabrescent.
Flowering time June-July and Fruiting time July-August, limestone rocks and steppe, 2600–2800 m.
In Hakkâri Province, indigenous people use the name “Masîjark” for Verbascum (
Verbascum oreophilum: Turkey. C10 Hakkari: Van-Hakkâri 113. km, c. 2400 m, 19 July 1956, alpine meadow, H.Birand & K.Karamanoğlu 471 (ANK).
Other herbarium materials of Verbascum oreophilum and Verbascum pyramidatum which were collected from Turkey have been examined. VANF, GAZI, ANK, G and GB herbarium have been visited for representative specimens.
Red list assessment: The extent of occurrence for Verbascum kurdistanicum was less than 100 km2 (approximately between 10–20 km2). 304 mature individuals have been counted. This species was found in a single location. It grows in limestone rocks and steppe. Its habitat continues to decline because of agricultural activities and other local uses. Hence, the threat category of Verbascum kurdistanicum is suggested as CR [B1ab (i, ii, iii) + 2ab (i, ii, iii)].
Because of having 4 stamens, Verbascum kurdistanicum belongs to the group A according to the Flora of Turkey (
Verbascum kurdistanicum is morphologically similar to V. oreophilum and V. pyramidatum because of having the corolla and capsule with branched eglandular hairs; glandular-hairy inflorescence and distinctly crenate lower leaves, but differs from being biennial; having different basal leaves; stamen; flaments and capsule (Table
Diagnostic characters of Verbascum kurdistanicum compared with the related V. oreophilum and V. pyramidatum.
Characters | V. kurdistanicum | V. oreophilum | V. pyramidatum |
---|---|---|---|
Plant | Biennial, 35–160 cm | Perennial, 60–160 cm | Perenial, 45–150 cm |
Basal leaves | 8–30 (incl. petiole) × 2.5–4.5 cm, lanceolate, crenate | 10–40 × 5–20 cm, lanceolate-oblong to ovate-elliptic coarsely crenate or bi crenate, more rarely dentate-lobed | 7–40 × 3–15 cm, lanceolate-oblong to obovate, coarsely bicrenate, crenata-dentate or weakly lobed |
Calyx | lobes linear-lanceolate | lobes oblong | lobes oblong |
Stamens | 4 | 4-rarely 5 | 5-rarely 4 |
Filaments | two anterior glabrous near apex | two anterior woolly to anthers or glabrous near apex | all woolly |
Capsule | 10–15 × 6–8 mm, ovate to oblong | 4–6 × 3–5.5 mm, ellipsoid-ovate or subglobose | 4–8 × 3–5 mm, broadly elliptic to ovate |
Thanks to Dr. Faik Ahmet Karavelioğulları for support description and critical discussion about the manuscript.