Ophryosporus paradoxus (Hook. & Arn.) B.D.Jacks., Index Kew. 2 (1): 354. 1894

Merklinger, Felix F. & Luebert, Federico, 2020, Notes on the genus Ophryosporus (Asteraceae, Eupatorieae) in Chile, PhytoKeys 161, pp. 61-77 : 61

Ophryosporus paradoxus (Hook. & Arn.) B.D.Jacks., Index Kew. 2 (1): 354. 1894

Basionym: Eupatorium paradoxum Hook. & Arn., Compan. Bot. Mag. 1: 240. 1835.

Nothites baccharidea DC. Prodr. 5: 187. 1836.

Stevia baccharoides (DC.) Meigen., Bot. Jahrb. Syst. 17: 283. 1893. Type. Chile. Region V Valparaíso: C.L.G. Bertero 837 (lectotype, designated here: G-DC[G00495730, photo!]; isolectotypes: G-DC [G00495717, mounted onto the same sheet as lectotype]; L [L.3661664!]).

Type.

Chile. Region V Valparaíso: T.C. Bridges 52 (lectotype, selected by Plos and Sancho (2013: 336): E [E00249901, photo!]; isolectotypes: K [K486667, photo!], W [W0018468, photo!]); remaining syntypes: Valparaíso, H. Cuming 337, K [K486668, photo!], E [E249900, E249902, photo!]; W [W0018467, photo!]. Valparaíso, J.Gillies (not seen).

This is the southernmost species of Ophryosporus in Chile, distributed from the region Metropolitana de Santiago northward to the region Atacama. This species is not strictly limited to the coast but also occurs further inland, for example in the Cuesta Las Chilcas or Andacollo.

Ophryosporus paradoxus is a very distinct species that can be differentiated from O. triangularis by its larger, lanceolate and rather papery leaves with strongly lobed margins, as opposed to the small, triangular, slightly fleshy leaves with revolute margins in O. triangularis . The secondary inflorescences are thyrsoid, emerge terminally and produce florets with white corollas and a pappus of white setae up to c. 3 mm long.

Specimens examined.

Chile. Region III Atacama: Prov. Copiapó, Jorquera-valley, 12 Jan 1970, O. Zöllner 4682 (L3661656). Prov. Huasco, below El Chivato, 28°54'S, 70°04'W, 1800 m, 4 Jan 1926, I.M. Johnston 5870 (S); Resguardo, 28°58'S, 70°10'W, 1530 m, 4 Jan 1926, I.M. Johnston 5863 (S); valley San Félix, 1180 m, 16 Dec 1941, E. Pisano V. & R. Bravo F. 1089 (SGO). Region IV Coquimbo: Prov. Elqui, valley of Río Turbio between Rivadavia and Guanta, 900 m, 18-19 Jan 1926, I.M. Johnston 6271 (S); near Guanaqueros, 24 Jul 1973, O. Zöllner 6827 (L3661655); road from Marquesa to Viñita Baja, 29.954529S, 70.964978W, 340 m, 26 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3822 (BONN, ULS); road from Marquesa to Viñita Baja, 29.873778S, 70.860812W, 700 m, 26 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3825 (BONN, ULS); road to Andacollo, c. 6 km before Andacollo, 30.201205S, 71.092169W, 900 m, 24 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3807 (BONN, ULS). Prov. Limarí, Ovalle, Villaseca near Huamalata, 30.568064S, 71.150966W, 270 m, 24 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3799 (BONN, ULS); Fray Jorge, 215 m, 13 Aug 1917, C. & I. Skottsberg 746 (S); Ovalle, Fray Jorge, 200 m, Nov 1925, E. Werdermann 892 (U [U1145306], S); Ovalle, Fray Jorge, Oct 1947, B. Sparre 3061 (S); hotel Termas de Socos, 30.732502S, 71.493507W, 80 m, 23 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3777 (BONN, ULS); road from Los Loros to Caleta El Toro, 30.741021S, 71.65348W, 50 m, 23 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3790 (BONN, ULS); road from Alcones to Los Loros, 30.78262S, 71.587161W, 330 m, 23 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3781 (BONN, ULS). Prov. Choapa, road from Combarbalá to Canela Baja, a few km after Los Pozos, 31.363888S, 71.260395W, 500 m, 22 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3775 (BONN, ULS); road from Illapel to Combarbalá, near Illapel, 31.604095S, 71.125953W, 450 m, 22 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3772 (BONN, ULS). Region V Valparaíso: Prov. Petorca, La Ligua, 5 km from Petorca on road from Pedequa, 550 m, 27 Nov 1938, C.R. Worth & J.L. Morrison 16704 (S). Prov. San Felipe de Aconcagua, Cuesta Las Chilcas, 560 m, 19 Jul 2003, F. Luebert & L. Kritzner 1757 (EIF); Cuesta Las Chilcas, 32.851797S, 70.875068W, 380 m, 20 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3741 (BONN, ULS); Cuesta Las Chilcas, 32.851797S, 70.875068W, 380 m, 20 Sep 2017, F. Luebert, T. Böhnert & F.F. Merklinger 3741A (BONN, ULS). Prov. Valparaíso, 14 Jan 1947, E. Wall & B. Sparre 45 (S); rocks near the sea, 17 Nov 1895, O. Buchtien s.n. (S). Prov. Quillota, Parque Nacional La Campana, Cerro La Campana, 32°58.777"S, 71°7.670"W, 480 m, 30 Dec 2000, F. Luebert 1398 (EIF). Prov. San Antonio, Nov 1927, O. Buchtien 3450 (L3661663). Prov. Melipilla, Curacaví, Dec 1967, (L3661657); La Barriga, Oct 1964, O. Zöllner 1765 (L3661658).