Ipomoea aristolochiifolia G. Don

Wood, John R. I., Munoz-Rodriguez, Pablo, Williams, Bethany R. M. & Scotland, Robert W., 2020, A foundation monograph of Ipomoea (Convolvulaceae) in the New World, PhytoKeys 143, pp. 1-823 : 1

298. Ipomoea aristolochiifolia G. Don , Gen. Hist. 4: 277. 1838. (Don 1838: 277)

Convolvulus aristolochiifolius Kunth , Nov. Gen. Sp. 3: 102. 1818 [pub.1819]. (Kunth 1819: 102), nom. illeg., non Convolvulus aristolochiifolius Mill. (1768) . Type. VENEZUELA. Humboldt & Bonpland (holotype P 00670751).

Ipomoea oocarpa Benth. , Bot. Voy. Sulphur 136. 1844 [pub. 1845]. (Bentham 1845: 136). Type. ECUADOR. Guayaquil, Sinclair s.n. (holotype K000612732).

Ipomoea peckoltii Meisn. in Martius et al. , Fl. Brasil. 7: 269. 1869. (Meisner 1869: 268). Type. BRAZIL. Rio de Janeiro, T. Peckolt 234 (lectotype BR0000006973520, designated by McDonald 1994: 82).

Ipomoea tuerckheimii Vatke ex Donn. -Sm., Bot. Gaz. 40: 8. 1905. (Donnell Smith 1905: 8). Type. GUATEMALA. Alta Verapaz, H. von Tuerckheim 386 (holotype US00111480, isotypes BM, K, US, GH, P, PH).

Ipomoea peninsularis Brandegee , Zoë 5: 168. 1903. (Brandegee 1903-5: 168). Type. MEXICO. Baja California Sur, Cape Region, T.S. Brandegee s.n. (isotype UC105173).

Ipomoea austin-smithii Standl., Publ. Field Mus. Nat. Hist. , Bot. Ser.18: 1566. 1938. (Standley 1938: 1566). Type. COSTA RICA. San Ramón, A.M. Brenes 16899 (holotype F0054827).

Ipomoea concinna House , Muhlenbergia 3: 42, 1907. (House 1907a: 42). Type. MEXICO. Jalisco, Bárcena 553 (holotype MEXU, n.v.).

Ipomoea cordata L.B. Smith & B.G. Schub., Contr. Gray Herb. 77: 31. 1939 (Smith and Schubert1939: 31). Type. MEXICO. Guerrero, G.B. Hinton 6984 (holotype GH00054494, isotypes K, MO, US).

Ipomoea viscosa Wiggins , Contr. Dudley Herb. 4: 21. 1950 (Wiggins 1950: 21). Type. MEXICO. Sonora, I.L. Wiggins 7505 (holotype DS, now CAS0003021, isotype US).

Ipomoea tweediei auct., non Hook., Bot. Mag. 69, t. 3978. 1842. (W.J. Hooker 1842).

Type.

Based Convolvulus aristolochiifolius Kunth

Description.

Slender twining annual herb, stems shortly pilose or glabrous. Leaves petiolate, 1.5-6 × 1-3.5 cm, ovate-deltoid, narrowed to an acuminate and mucronate apex, base very narrowly cordate often with overlapping rounded auricles, margin often with a few teeth, ciliolate, adaxially glabrous, abaxially paler, the veins puberulent; petioles 0.5-5.5 cm, glabrous to sparsely pilose. Inflorescence of 1-3(-6)-flowered, axillary, pedunculate cymes; peduncle 2.5-6 cm, puberulent, very slender, often curved, arising through the sinus of the leaf base; bracteoles 1-1.5 mm, triangular-lanceolate; pedicels mostly 5-10 mm, very slender, glabrous; calyx lanceolate in outline; sepals subequal, often warted on exterior near base but otherwise glabrous, 3-5 × 1.5-2 mm, oblong-lanceolate, obtuse, mucronate, dark green with pale scarious margin; corolla 1.5-2.5 cm long, campanulate, tube white, limb blue (drying pink), very shallowly lobed, 1.2-1.8 cm diam. Capsules glabrous, ovoid, the style often persistent as a rostrate tip; seeds puberulent.

Illustration.

Figures 2C , 145 ; O’Donell (1959b: 113).

Distribution.

Widely distributed through the Americas up to 2300 m, principally in the mountains of Central America (especially Nicaragua and Costa Rica) and the Andes but absent from both the very wet and the drier regions and never very abundant. It is a plant of shrubberies such as coffee plantations and disturbed scrubby places.

ARGENTINA. Jujuy: A. Krapovickas et al. 47387 (CTES, MO). Salta: Antillas, Cerro Negro, S. Venturi 10403 (BM, LIL, MO); Cerrillos, L.J. Novara 7704 (G, S). Tucumán: S. Venturi 315 (LIL, SI, US).

BRAZIL. Minas Gerais: Y. Mexia 4624 (BM, MO, NY, S). Paraíba: J. Vasconcellos 371 (RB). Paraná: Y.S. Kuniyoshi & A.C. Svolenski (MBM). Rio de Janeiro: O.C. Góes 630 (RB). São Paulo: K. Mizoguchi 1548 (NY). According Flora do Brasil 2020 under construction it is more common with records additionally from Santa Catarina, Mato Grosso do Sul, Distrito Federal, Bahia, Alagoas and Pernambuco.

BOLIVIA. Chuquisaca: Boeto, below Nuevo Mundo, J.R.I. Wood et al. 27660 (K, LPB, USZ); Luis Calvo, Serrania de Iñao, J.A. Peñaranda & J. Tudela 924 (MO, OXF); Tomina, Thiumayo, J.R.I. Wood et al. 27651 (OXF, K, LPB, USZ). La Paz: Muñecas, Río Charazani, A. Fuentes & R. Cuevas 7969 (BOLV, LPB, MO); Inquisivi, couth of Licoma, J.R.I. Wood et al. 29178 (LPB, USZ); Murillo, Zongo Valley, J. Solomon 13130 (FTG, LPB, MO); Nor Yungas, Coroico, O. Buchtien 3879 (E, NY, US). Potosí: Charcas, Torotoro, J.R.I. Wood et al. 21968 (K, LPB). Santa Cruz: Florida, Achira Camping, M. Nee et al. 49024 (NY); Vallegrande, Piraimiri, J.R.I. Wood et al. 21764 (K, LPB, USZ). Tarija: O’Connor, Chuquiaca, K. Fiebrig 2753 (BM, E, GH, K, P, S, US).

PERU. Amazonas: Chachapoyas, A. Mathews s.n. (BM). Ancash: Chiquian, K. Young & M. Eisenberg (MO). Cajamarca: Llatas Quiroz 2916 (F). Cusco: G. Calatayud et al. 2283 (MO). Pasco: Oxapampa, D.N. Smith 4129 (MO, USM). Piura: E. Laure 5492 (P). Tumbes: Zarumilla, C. Díaz et al. 4834 (MO, USM).

ECUADOR. Guayas: A.S. Hitchcock 20027 (F, NY, US). Loja: G. Harling & L. Andersson 13587 (MO). Pichincha: R. Benoist 2157bis (P). Tungurahua: E. Asplund 7644 (S).

COLOMBIA. Cauca: K. von Sneidern 24 (S). Cesar/Magdalena: “Ocaña” (Sierra Nevada de Santa Marta?), L. Schlim 256 (BM, P). Cundinamarca: Pacho, L. Rosero 382 (COL). Norte de Santander: J. Cuatrecasas 13451 (COL).

VENEZUELA. Dist. Fed.: Funck 175 (C, P); L. Aristeguieta 7771 (VEN). Mérida: Moritz 1289 (BM). Táchira: Saisayal, Río Negro valley, L. Bernardi 11012 (G). Also Lara, Miranda, and Yaracuy fide Austin (1982b).

PANAMA. Los Santos, Tonosi, J.A. Duke 12483 (MO).

COSTA RICA. El General, A.F. Skutch 3823 (K, S); Alajuela, San Ramón, Khan et al. 715 (BM); W.D. Stevens & O.M. Montiel 26719 (BM, MO); Puntarenas, Coto Brus, M.M. Chavarría 700 (K, MO).

NICARAGUA. Estelí, L. Williams & A. Molina 42472 (BM, F); Cerro El Coyolito, P. Moreno 25266 (BM); I. Coronado et al. 471 (P).

HONDURAS. S. Lagos-Witte et al. 54 (MO) fide Tropicos.

EL SALVADOR. Morazán, Montes deb Cacaguatique, J.M. Tucker 670 (K, UC).

BELIZE. C.M. Brown 14 (E); Chiquibul Forest Reserve, C. Whitefoord 10029 (BM).

GUATEMALA. Chiquimula, A. Molina & A.R. Molina 25390 (BM, DUKE, MO).

MEXICO. Baja California Sur: Type of Ipomoea peninsularis . Chiapas: Berriozábal, D.E. Breedlove 20404 (MO). Est. México & Dist. Fed.: Temascaltepec, G.B. Hinton 5173 (K), 8555 (K, MO); Tejupilco, G.B. Hinton 8555 (K, MO, NY). Guerrero: Mina, El Mono, G.B. Hinton 9675 (GBH, K, MO). Michoacán: Coalcomán, G.B. Hinton 12258 (GBH, K, MO). Nayarit: La Bahada, E. Lehto 24226 (ASU). Querétaro: Tanchanaquito, E. Carranza 4294 (IEB). Sinaloa: Sierra Surotato, H.S. Gentry 6477 (MO). Sonora: Agua Prieta, Rancho La Calera A.L. Reina-G & T.R. Van Devender 2006-705 (MO, NMC, USON). Veracruz: Valle de Córdoba, E. Bourgeau 1733 (K, P).

UNITED STATES. Texas: Cameron Co., W.R. Carr 14104 (TEX) - not seen.

Note.

Readily recognised by the delicate habit, small blue flowers, warted sepals with white margins and, particularly, by the peduncle which passes through the sinus of the leaf base. It is commonly confused with Ipomoea dumetorum but in that species the sepals have dark blotches and the peduncle does not pass through the sinus at the base of the leaf.

Figures

Figure 2. Sepals of Ipomoea species. A I. setifera B I. dumetorum C I. aristolochiifolia D I. crinicalyx E I. plummerae F I. bahiensis G I. amnicola H I. appendiculata. Photographs of A (Wood et al. 27771) B (Wood et al. 27654) D (Wood et al. 27606) and G (Wood et al. 27706) by Beth Williams C (Wood 27926) H (Wood et al. 28024) by John Wood E by Mario Giorgetta F (Queiroz et al. 15950) by Hibert Huaylla.

Figure 145. Ipomoea aristolochiifolia. A habit B leaf C adaxial leaf surface D abaxial leaf surface E inflorescence showing position of peduncle F calyx and corolla G corolla opened up to show stamens H calyx and capsule. Drawn by Eliana Calzadilla A, C-H from Wood et al. 27680; B from Wood et al. 27651.