Narcissus × kirchnerianus P. Escobar

García, Pedro Escobar, 2019, Two New Hybrid Daffodils (Narcissus, Amaryllidaceae) From Northern Extremadura (Cáceres, Spain), Phytotaxa 403 (4), pp. 293-300 : 296

Narcissus × kirchnerianus P. Escobar , sp. hybr. nov. ( Figs. 1E , 2E )

= Narcissus rupicola Dufour ex Schult. & Schult. fil. in Roemer & Schultes × N. vitekii P. Escobar

Narcissus foliis linearibus , glaucescentibus, fistulosis; scapo unifloro; flore subsessili, aureo; laciniis acutis, corona plicata marginibus inaequaliter crenatis atque serrulatis. Habitat in rupibus Extremadurae borealis, prope oppidulum San Martin de Trevejo.

Type: — SPAIN. Extremadura: San Martín de Trevejo, monte Jálama, 18 April 2018, P. Escobar García 100/2018 (holotype W).

Perennial bulbose herbs 10–15 cm tall. Leaves 2, 80–150 × 1–2 mm, erect, keeled, glaucous and glabrous, trapezoidal in cross-section. Scapes 80–120 mm long, terete. Spathe 24–27 mm long, membranous. Flowers solitary, unscented; pedicels 2–3 mm long. Ovary 5–9 × 2.5–4 mm, elliptic, green; ratio ovary length/width approximately 2. Perianth tube 14–16 mm long, narrowly conical, yellowish green. Tepals 6, 7–8 × 4–5.5 mm, the inner slightly narrower, deep yellow, broadly ovate with maximum width towards their central region, mucronulate, erect; approximately 0.5 times as long as the perianth tube. Corona widely conical, 3.5–4.5 × 9.5–10.5 mm, 2–3 times as wide as long, deep yellow, with an irregularly dentate or dentate-crenated margin, sometimes narrowed at mouth. Stamens unequal. Style included in the perianth tube. Fructification not observed.

Examined material (paratype): — SPAIN. Cáceres: San Martín de Trevejo, monte Jálama, 26 April 2018, fl., P. Escobar García 115/2018 ( W).

Etymology: —The species is named after the Austrian archivist and benefactor Otto Kirchner (1961–).

Figures

FIGURE 1. A. Typical colony of short-scaped N. vitekii on an open pasture at the locus classicus in Sierra de Gata (Extremadura, Spain). B. N. rupicola in a shady quartzite crevice near Hornachos (Badajoz). C. N. triandrus subsp. pallidulus in the immediate vicinity of N. vitekii in a forest clearing. Note the more elevated habit of the latter in a partially shady habitat. D. N. × richardianus in a neighbouring scrub clearing. Pale flowers and widely open coronas are the typical outcome of N. triandrus subsp. pallidulus acting as the maternal parent (see also Fig. 2D). E. N. × kirchnerianus in an open pasture close to granite outcrops. Note the intense yellow and the narrowed corona mouth, typical outcome of a crossing where N. vitekii acted as the maternal parent (compare with Fig. 2E).All photographs by the author.

FIGURE 2. Comparative plate depicting A. N. triandrus subsp. pallidulus, B. N.vitekii, and C. N. rupicola. The two first species hybridize to form N. × richardianus (D1. Offspring of N.triandrus subsp. pallidulus ♀ × N. vitekii ♂; D2. Offspring of N. triandrus subsp.pallidulus ♂ × N. vitekii ♀; E. N. × kirchnerianus: offspring of N. rupicola ♀ × N. vitekii ♂, note the widely open corona in contrast with Fig. 1E.