A foundation monograph of Ipomoea (Convolvulaceae) in the New World Author Wood, John R. I. Author Munoz-Rodriguez, Pablo Author Williams, Bethany R. M. Author Scotland, Robert W. text PhytoKeys 2020 143 1 823 http://dx.doi.org/10.3897/phytokeys.143.32821 journal article http://dx.doi.org/10.3897/phytokeys.143.32821 1314-2003-143-1 F6F11A6EE4FF5A1885CEA2B60AE965A5 340b. Ipomoea amnicola subsp. chiliantha (Hallier f.) J.R.I. Wood & Scotland, comb. & stat. nov urn:lsid:ipni.org:names: Ipomoea chiliantha Hallier f . , Bull. Herb. Boiss. 7 (5), append. 1: 50. 1899. (Hallier 1899c: 50). Type. PARAGUAY. "Villa occidental", Lorentz s.n. (holotype B†, lectotype GOET, designated by Wood et al. 2015: 29). Type. Based on Ipomoea chiliantha Hallier f . Diagnosis. Inflorescence of usually long pedunculate, axillary cymes, sometimes compounded; peduncles 5-13 cm; outer sepals c. 6 x 4 mm long, inner c. 7 x 5 mm; corolla 4-5.5 cm long, pink, darker in the centre, limb 3-3.5 cm diam.; seeds 7 x 4 mm. Illustration. Figure 163 ; O'Donell (1959b: 147) as Ipomoea chiliantha . Figure 163. Ipomoea amnicola subsp. chiliantha . A habit B outer sepal C inner sepal D corolla opened out to show stamens E ovary and style F fruiting cyme G fruiting calyx and capsule. Drawn by Rosemary Wise A E from Mereles 162; B-D from Petersen 5497; F, G from Mereles 2550. Distribution. This subspecies seems to prefer seasonally flooded swampy ground both in Bolivia, Paraguay and the Brazilian Pantanal. ARGENTINA. Misiones : T.M. Pedersen 5497 (C, S). Chaco : Isla Anequera, A. Krapovickas & C. Cristobal 12733 (CTES), A. G. Schulz 2059 (CTES, LIL). Formosa : Dept. Pilcomayo, C. Cristobal et al. 2146 (CTES), Santa Fe : Pensiero & Tivano 3212 (CTES). Corrientes : Dept. Capital, S.G. Tressens et al. 769 (CTES, MO). PARAGUAY. Alto Paraguay : Est. Cerrito, F. Mereles 7006 (FCQ). Central : Ypacarai , E. Hassler 11582 (BM, K), 12532 (BM). Concepcion : San Luis: K. Fiebrig 4485A (BM, K, MO). Cordillera : E. Hassler 1856 (K); E. Zardini & U. Velazquez (MO). Presidente Hayes : Est. Santa Maria del 12, M. Pena-Chocarro et al. 2565 (BM, FCQ); km 130, Ruta Transchaco, F. Mereles 2244 (CTES), Puente Remanso, F. Mereles 4460 (FCQ); km 58, Ruta Transchaco, A. Krapovickas & C. Cristobal 43220 (CTES, F, FCQ, K). San Pedro : abundant in plain west of Com. 25 de Diciembre, J.R.I. Wood & G. Gonzalez 28473 (FCQ); between Rio Apa y Rio Aquidaban, K. Fiebrig 4483 (BM). BRAZIL. Mato Grosso do Sul : Puerto Murtinho , Robert 885 (K). BOLIVIA. Beni : Cercado, Puerto Varodor, Maldonado et al. 58 (LPB). Santa Cruz : Chiquitos, El Tinto-Quimome, J.R.I. Wood & B. Williams (OXF, K, LPB, USZ); German Busch: Yacuses, J.R.I. Wood & D. Villarroel 25541 (K, LPB, UB, USZ); Nuflo de Chavez J.R. Abbott 16966 (BOLV, HSB, LPB, MO, USZ); Puente San Miguelito, J.R.I. Wood et al. 27743 (OXF, K, LPB, USZ). Note. Subsp. chiliantha has the appearance of a large-flowered subsp. amnicola and intermediates occur particularly in the Corumba region. Parada et al. 947 (USZ, MO, OXF) from Carmen Rivero Torrez and Wood & Pozo 26078 (K, LPB, UB, USZ) from San Jose de Chiquitos are examples from Bolivia but intermediates appear more commonly in the Brazilian Pantanal. • Species 341-343 comprise a small clade with distinctive ribbed sepals