Pimpinella husnucan-baseri A.Duran & Lyskov, 2025

Duran, Ahmet, Lyskov, Dmitry, Samigullin, Tahir & Dündar, Ekrem, 2025, Pimpinella husnucan-baseri (Apiaceae), a new species from South Anatolia, Turkey, Phytotaxa 702 (1), pp. 29-47 : 37-40

Pimpinella husnucan-baseri A.Duran & Lyskov sp. nova ( Figs. 2–7 ).

Type:— TURKEY.C4 Konya:Hadim,Dedemli,Karabelen Tepe location, 37°02’11’’N, 32°31’37’’E, 18 July 2023, 1430 m,serpentine places, edge of fallow fields, A.Duran 10904 (holotype: HUB, isotypes: ANK, GAZI, MW barcodes MW0595862 & MW0595863).

Diagnosis: Pimpinella husnucan-baseri is not closely related to any other species in the genus Pimpinella . This new species is superficially similar to some other species in the genus, and it differs from all other species of this genus by the combination of the following characters: stem richly branched throughout, lower and middle branches very long, horizontal-ascending; leaves mostly basal, ±forming a rosette, 2–3-pinnate, puberulous to pubescent; cauline leaves dissimilar to basal leaves; bracts and bracteoles absent; petals white, glabrous; ovary glabrous; stylopodium hemispherical-depressed; fruit broadly ovate, glabrous; dorsal vittae 5–12 per vallecula, 30–35 in total, commissural vittae 2.

Description: Monocarpic, biennial or perennial, hemicryptophytic herbaceous plants, 45–115 cm tall (including inflorescence). Thickened rootstock cylindrical-oblong, vertical, 7–20 mm ⌀, with fibrous remains of dead petioles at base of stem. Stem mostly solitary, rarely 2–3, puberulous, terete, striate, main stem ±erect, 4–10 mm ⌀ at base; richly branched throughout, lower and middle branches very long, up to 70 cm tall, horizontal-ascending, usually alternate, rarely opposite. Leaves mostly basal, ±forming a rosette, triangular in outline, (5–)7–26 × 4–21 cm (incl. petiole), 2–3-pinnate, puberulous to pubescent, primary segments 4-paired and petiolulate; petiole with a well-developed, ±slender, 2–7(–10) cm long; ultimate segments ovate-triangular or cuneate-rhomboid, lobed or pinnatifid, irregularly toothed or serrate to dentate above, 6–15 x 4–11 mm. Cauline leaves dissimilar to basal leaves, only at base of lateral branches, decreasing size towards inflorescence, broadly sheathed petioles and sessile on the sheaths. Lower cauline leaves 2-pinnate and ultimate segments with narrower lobes. Middle cauline leaves 1–2-pinnate or several segments. Upper cauline leaves 3–5-linear lobes or sheath-like form. Inflorescence compound umbel, nodding when young. Umbel peduncle 2–7 cm long, glabrous to very sparsely puberulous; rays 6–10(–12), subequal to equal, 14–35(– 45) mm long, glabrous, delicate; bracts and bracteoles absent. Umbellules 8–17-flowered; pedicels 2–8 mm long, glabrous. Sepals obsolete. Petals white, 1.5 × 1 mm, regular, broadly ovate, emarginate, strongly incurved at the apex, inflexed lobe slightly bifid, glabrous. Filaments c. 1.5 mm long. Anthers oblong to subglobose, c. 0.5 mm long, yellowish. Ovary glabrous. Stylopodium hemispherical-depressed; styles 2.5–3 mm long, ascending to erect at first, eventually horizontal to reflexed at the apex; stigma capitate, both mericarps mostly well-developed. Fruit broadly ovate, somewhat laterally compressed, glabrous, 2.8–3.2 × 2–2.8 mm, brownish when ripe; mericarps ± terete, dorsal ridges slightly conspicuous, slender, commissure c. 1.8 mm wide; dorsal vittae 5–12 per valleculae, 30–35 in total, commissural vittae 2.

Paratypes:— TURKEY. C4 Konya: Hadim, Dedemli, Karabelen Tepe location, 37°02’11’’N, 32°31’37’’E, 14 August 2022, 1430 m, serpentine places, open shrubs, A.Duran 10881 (HUB, MW barcodes MW0595860 & MW0595861) ; Konya: Hadim, between Dedemli-Dolanlar villages, 37°02’37’’N, 32°31’01’’E, 18 July 2023, 1350 m, serpentine slopes, A.Duran 10903 (HUB) .

Eponymy:—This new species is named in honour of Prof. Dr. K. Hüsnü Can Başer, a well-known Turkish pharmacologist, who has made significant contributions to the Apiaceae family and the flora of Turkey. The Turkish name of the new species was suggested to be “can anasonu” ( Menemen et al. 2016).

Phenology: —Flowering in June; fruiting in July.

Distribution and ecology: —The new species is a narrow endemic to the Hadim district (Konya province), Southern Anatolia. This species is located in the Irano-Turanian phytogeographical regions ( Fig. 10 ). This area is situated on a slope extending along the valley and exhibits an irregular terrain structure. There is no predominant vegetation formation in the area. However, degraded oak forests, orchards, abandoned fields, and sloping serpentine rocky areas are common in the region. Pimpinella husnucan-baseri grows on serpentine places, and stony slopes. Several new species belonging to the Apiaceae family have been described from this region, including Prangos heyniae Duman & Watson (1999: 203) , Diplotaenia hayri-dumanii Pimenov & Kljuykov in Pimenov et al. (2011: 72), Eryngium trisectum Wörz & Duman (2004: 423) , Prangos abieticola Aytaç & Duman (2016: 126) , and Chaerophyllum aksekiense Duran & Duman (1999: 47) .

International Union for Conservation of Nature (IUCN) red list category:— This species is distributed in the Taurus mountains within the borders of Hadim district (Konya) where Pimpinella husnucan-baseri seems to be rare and local. It is known only from the type locality and this area is smaller than 7 km 2 (criteria B1, B2a). The habitat of this species has been subjected to systematic anthropogenic activities such as irrigation dam, destruction of forests, expansion of agricultural areas, new roads and settlements, and their effects are leading to a reduction in the number of plants (criteria A). The number of mature individual members of the population is approximately 135 (criteria C1). Because of all these factors the species should be considered Critically Endangered (CR) according to the IUCN Red List Criteria ( IUCN 2024).

Figures

FIGURE 2 Representative specimen of Pimpinella husnucan-baseri (holotype).

FIGURE 3 Pimpinella husnucan-baseri: A—remains of old leaves at the base of stems, B—basal and cauline leaves, C—basal leaves, D—stems richly branched, E—habitus.

FIGURE 4 Pimpinella husnucan-baseri: A and B—basal leaves, C—ultimate segments, D—lamina of basal leaves, E—lower cauline leaves, F and G—upper and middle cauline leaves, H—stem and horizontal-ascending branches.

FIGURE 5 Pimpinella husnucan-baseri: A—nodding umbels in the early flowering stage, B—lateral and terminal umbels, C—umbels without bracts, D and E—umbellules without bracteoles, pedicels, glabrous fruits, stylopodiums and styles, F—mature dry fruits.

FIGURE 6 Pimpinella husnucan-baseri: A—ventral surface of the mericarps, B—dorsal surface of the mericarp, C—commissural surface of the mericarp, D—cross-section of the mericarp (a—dorsal rib, b—dorsal vittae, c—commissural vittae).

FIGURE 7 Cross-section of the mericarp of Pimpinella husnucan-baseri (dr—dorsal ribs, lr—lateral ribs, val—valleculae).

FIGURE 10 Distribution map of Pimpinella husnucan-baseri (■), P. peucedanifolia (▲), P. saxifraga subsp. nigra (●), and P. rhodantha (★).