Selkirkia berteroi (Colla) Hemsl., Rep. Voy. Challenger, Bot.

Holstein, Norbert, Chacón, Juliana, Hilger, Hartmut H. & Weigend, Maximilian, 2016, No longer shipwrecked-Selkirkia (Boraginaceae) back on the mainland with generic rearrangements in South American “ Omphalodes ” based on molecular data, Phytotaxa 270 (4), pp. 231-251 : 241

1. Selkirkia berteroi (Colla) Hemsl., Rep. Voy. Challenger, Bot. 1(3) (1884: 48)

Basionym: Cynoglossum berteroi [‘berteri’, to be corrected acc. to Art. 60.7] Colla, Herb. pedem. 4 (1835a: 256) [15‒31 Aug 1835], subsequently republished in Colla, Mem. Accad. Sc. Torino 38(6) (1835b: 132, pl. 41) [Nov‒Dec 1835] ( Hilger et al. 2015).

Original citation: “In praeruptis sylvaticis montium editiorum ins. Iuan Fernández.”

Lectotype (designated here):— CHILE. V. Región: [Prov. Valparaíso]: Juan Fernández archipelago, [Más a Tierra, Robinson Crusoe], April 1830, C. L. G. Bertero 1449 ( TO!, isolectotypes G00236137 !, G-DC [ G00205648 ]!, K000573731 !, M!, MPU019689 !, P00622855 !, P00622856 !, P04083217 !).

Description: —Erect shrub 0.3–2 m, young parts strigose with acroscopically appressed, short (0.2–0.3 mm) simple trichomes. Leaves sessile. Leaves (ob-)lanceolate, up to 9.5 × 3 cm, base attenuate to cuneate, apex acute, apiculate. Lower cauline leaves often oblanceolate and more or less narrowly cuneate, upper cauline leaves rather lanceolate, sometimes almost auriculate. Leaf lamina adaxially with short simple trichomes, also abaxially but glabrescent. Leaves with prominent primary vein, side veins inconspicuous. Inflorescence complex, appearing as umbel-shaped panicles, at base with frondose bracts. Pedicels pubescent with short (0.2–0.3 mm) simple trichomes, up to 4 mm long. Calyx tube ca. 1 mm, pubescent but shorter and less densely than petiole, lobes 1.5–2 mm, elliptical with acute apex, erect. Corolla 6–7 mm in diam., tube and lobes 2–2.5 mm, orbicular with obtuse apex; white; faucal scales coloured as corolla, 2-lobed. Stamens epipetalous, included in corolla tube. Pollen 3-colporate with 3 pseudocolpi, each with granular margin, dumbbell-shaped, 13.5–14.5 × 7.3–8 μm. Gynoecium superior, with 4-parted, tuberculate ovary, style gynobasic, filiform, stigma capitate. Nutlets (3–)4, pendulous on subulate gynobase, winged, on dorsal side with barbed glochidia. ( Figs 3D–F )

Note: —Colla described the plant twice in the same year and we adopt the interpretation of Hilger et al. (2015) regarding priority.

Habitat and distribution: — Selkirkia berteroi grows in cloud forest at the higher elevations of ca. 400 to 600 m in the centre of Robinson Crusoe Island, with an overall range of less than 10 km 2.

Conservation status: —The species is considered as “Threatened” according to de Cuevas & Figueroa (2007). Based on the IUCN-criteria (http://jr.iucnredlist.org/documents/redlist_cats_crit_en.pdf, accessed 28.08.2015) it should be considered as “critically endangered” based on meeting criteria A.1–3 and B.1a.

Specimens examined:— CHILE. V. Región: Juan Fernández, November 1864, R.A. Philippi (W0065336, W0065337, W1889-117587). Juan Fernández, 1872, G. Downton s.n. (K, W1889-296263). Juan Fernández, October 1872, E.C. Reed s.n. (BM, K). Juan Fernández, November 1875, H.N. Moseley s.n. (BM, K). Juan Fernández, Masatierra [Más a Tierra, Robinson Crusoe], Pateguelo de Villagra, 590 m, 14 December 1916, C. & I. Skottsberg 132 (BM, K, P03512906, S). Juan Fernández, Masatierra [Más a Tierra, Robinson Crusoe], Bah. Cumberland, Zuebr. Monte Maderago, 390 m, 24 January 1917, C. & I. Skottsberg 341 (S). Juan Fernández, Masatierra [Más a Tierra, Robinson Crusoe], El Camote, in the shrub on north side of pass, 580 m, 20 September 1955, B. Sparre s.n. (M). Juan Fernández, Masatierra [Más a Tierra, Robinson Crusoe], El Camote, in the shrub-forest on the northern side of the pass, 570 m, 20 September‒21 October 1955, B. Sparre & I. Planella 136 (S). Masatierra [Más a Tierra, Robinson Crusoe], on the Villagra side of Pateguelo (“Mirador”), 400 m, 26 October 1955, I. Planella s.n. (S). Masatierra [Más a Tierra, Robinson Crusoe], Portezuelo de Villagra, growing on rocky cliff, 9 December 1965, O.T. Solbrig et al. 3807 (M, K, S). CULTIVATED MATERIAL: From Juan Fernández, April 1874, Anon., comm. from Veitch Nurseries s.n. (K000573730).

Figures

FIGURE 3. Selkirkia trianae (A–C) and S. berteroi (D–F): A, corolla; B, calyx; C, habit; D, habit; E, calyx; F, corolla. Scale:A, B, E, F: 1 mm; C, D: 10 cm. Drawn by Stefanie Werner.