Senecio doronicum subsp. longifolius (Willkomm) Calvo, 2022

Calvo, Joel, Álvarez, Inés & Aedo, Carlos, 2015, Systematics of Senecio section Crociseris (Compositae, Senecioneae), Phytotaxa 211 (1), pp. 448-450 : 448-450

2b. Senecio doronicum subsp. longifolius (Willkomm) Calvo in Calvo et al. (2014: 139). Senecio doronicum var. longifolius Willkomm (1891: 4) [ “longifolia ”]. TYPE: Spain, Catalonia, Vall d'Aran, lago de Toro (Viella), [42º38'N 0º43'E], July 1873, M. Compañó s.n. (lectotype, designated by Calvo et al. (2014: 139), COI-37582!).

Senecio mampodrensis Gandoger (1910: 98) . TYPE: Spain, Castilla y León, León, Acebedo, Picos de Mampodre , [43º02'N 5º10'W], 29 June 1905, M. Gandoger s.n. (lectotype, designated here, MO!; isolectotype, B-10-0325062!).

Senecio longipetalus Sennen (1929: 210) [“longipetala”]. TYPE: France, Pyrénées-Orientales, Capcir, vallée de Galba, [42º38'N 2º00'E], 10 Aug 1916, (frère) Sennen 2690 (lectotype, designated here, MA-130573!; isolectotype, BC-29073!).

Senecio doronicum f. robustus Losa & Montserrat (1951: 100) [ “robusta ”], nom. inval. ( McNeill et al. 2012, ICN Art. 39.1).

Jacobaea doronicum var. maxima Lagasca , nom. nud., in sched. ( McNeill et al. 2012, ICN Art. 38.1) (MA-130621!).

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Senecio doronicum f. uniflorus Duffour , nom. nud., in sched. ( McNeill et al. 2012, ICN Art. 38.1) (P-3778648 image!, P-3790118 image!).

Senecio doronicum var. simplex Gandoger , nom. nud., in sched. ( McNeill et al. 2012, ICN Art. 38.1) (MA-130638!). Stem covered with scattered scabrid-arachnoid trichomes, the base sometimes ± arachnoid. Leaves glabrescent above, with scattered scabrid-arachnoid trichomes beneath. Capitula 1(–3); involucral bracts (20–)22–26(–32),

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Phytotaxa 211 (1) © 2015 Magnolia Press • 19 glabrescent to covered with scattered scabrid-arachnoid trichomes; supplementary bracts (7–)10–15(–18), 8.9–13.3 mm long, as long as the involucral ones, sometimes slightly shorter, with scattered arachnoid trichomes on the margin. Ligulate flowers usually light orange. Chromosome number: n =60 ( Gallego 1983: 131, sub S. lagascanus , see comments below, Küpfer 1972: 1753). Figures 5 , 8D .

Distribution and habitat: — Andorra, France, Spain; alpine meadows, montane pastures, rocky slopes, edge of woods of Abies alba , Fagus sylvatica , Pinus uncinata Ramond ex Candolle in Candolle & Lamarck (1805a: 726), on calcareous and siliceous soils; elevations of 1100–2500 m ( Figure 6 ).

Phenology: —Flowering from June to August.

Discussion: —This subspecies is mainly distributed through Cantabrian Mountains and Pyrenees. However some scattered populations have been found in SE France, where the most outstanding are those from Jura Mountains. Although these specimens display characters that correspond to S. doronicum subsp. longifolius , the phylogenetic analyses indicate that these populations from Jura Mountains are nested with S. doronicum subsp. doronicum from Alps ( Calvo et al. 2013). The nearest populations of S. doronicum subsp. doronicum occur in Haute-Savoie ( France) and Vaud ( Switzerland), around 45 km and 70 km away, respectively. These populations are well characterized because of their synflorescences with solitary to several capitula, and their arachnoid to slightly floccose indumentum.

The chromosome number reported by Gallego (1983) is based on a misidentified collection (Devesa et al. 1894/80, SEV) from Puerto de Tarna (Oviedo, Spain), which corresponds to S. doronicum subsp. longifolius instead S. lagascanus .

Selected specimens examined. ANDORRA. Ordino, port de Siguer, estanyons de Banyell, 42º38’N, 1º34’E, 30 Aug 2002, C . Aedo, I . Aizpuru & J . Pedrol 8630 ( MA); inter port d'Embalire et pic Negre , 42º31’N, 1º42’E, 26 July 1944, H . Sleumer 1471 ( L) . FRANCE. Ain: Jurassus mons, Le Reculet, 46º15’N, 5º55’E, 18 July 1886, H. A . Romieux s.n. ( H). Cantal : près au sud-est de Malbo, 44º58’N, 2º45’E, 26 June 1884, J . de Puyfol 1714 ( MT, WU). Haute-Garonne: boven Jouéou-Laou d'Esbas, Luchon , 42º43’N, 0º36’E, 7 July 1951, J . D. Verleur s.n. ( L). Hautes-Pyrénées: Tourmalet , 42º54’N, 0º8’E, July 1869, H . Bordère 1251 ( MA). Puy-de-Dôme: Col de la Croix- Morand , entre la Cascade du Queurenich et le Saut-du-Loup et au-dessus de la grande Cascade du Mont-Dore , 45º35’N, 2º51’E, July 1971, V . Rastetter 6297 ( MA). Pyrénées-Orientales: Capcir , vallée de Galba, 42º38’N ,

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2º2’E, 10 Aug 1916, (frère) Sennen 2690 ( MA). Tarn: Mazamet, pic de Nore , 43º26’N, 2º28’E, 28 June 2011, J. Calvo 5658 ( MA). SPAIN. Asturias: Lena, Tuiza de Arriba , peña Ubiña, ladera este , 43º1’N, 5º56’W, 25 July 2009, J. Calvo 4020 ( MA). Cantabria: monte Salborón, Camaleño , 43º6’N, 4º48’W, 10 July 1991, C. Aedo s.n. ( MA). Huesca: Sahún, macizo del Posets, refugio de Angel Orús , 42º36’N, 0º26’E, 20 Aug 1987, M. Luceño et al. 141 ( MA). León: pr. Polvoredo, ladera S de Peña Ten , 43º5’N, 5º7’W, 10 July 2012, C. Aedo & J. Pedrol 19192 ( MA). Lleida: Pallars, pr. Espot , 42º34’N, 1º4’E, 9 July 1977, F. J. Fernández Casas et al. 2022 ( MA). Navarra: Valle del Roncal , puerto de Arras , 42º57’N, 0º48’W, 27 July 1969, E. F. Galiano, S. Silvestre & B. Valdés s.n. ( MA). SWITZERLAND. Vaud: Jura, Massif du Jura, La Dole , 46º25’N, 6º5’E, 17 Aug 2010, J. Calvo 4982 ( MA); La Rippe, entre le châlet de La Dôle et le sommet de La Dôle , 46º25’N, 6º5’E, 21 July 1979, A. Stork 7906 ( B) .

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Figures

FIGURE 5. Senecio doronicum subsp. longifolius (Willkomm) Calvo, Fernández Casas 2022 et al. (NY).

FIGURE 6. Distribution map for Senecio doronicum subsp. longifolius (Willkomm) Calvo (▲).

FIGURE 8. A. Senecio provincialis (Linnaeus) Druce (drawn from Puech s.n. 27 June, M).—a1. Capitulum.—a2. Involucral bract.—a3. Supplementary bract.—a4. Ligulate floret.—a5. Tubular floret. B. Senecio lagascanus Candolle (drawn from Molero & Sáez s.n. 9 June 1996, C).—b1. Capitulum.—b2. Involucral bract.—b3. Supplementary bract.—b4. Ligulate floret.—b5. Tubular floret. C. Senecio scopolii Hoppe & Hornschuch subsp. scopolii (drawn from Pichler 65, G).—c1. Capitulum.—c2. Involucral bract.—c3. Supplementary bract.—c4. Ligulate floret.—c5. Tubular floret. D. Senecio doronicum subsp. longifolius (Willkomm) Calvo (drawn from Amich et al. s.n. 18 June 1979, MA).—d1. Capitulum.—d2. Involucral bract.—d3. Supplementary bract.—d4. Ligulate floret.—d5. Tubular floret.