Ipomoea pubescens Lam.

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

242. Ipomoea pubescens Lam. , Tabl. Encycl. 1 (2): 465. 1791 [pub. 1793]. (Lamarck 1793: 465)

Convolvulus pubescens (Lam.) Willd. , Hort. Berol. 1: 203. 1809. (Willdenow 1809: 203).

Pharbitis pubescens (Lam.) Choisy in A.P. de Candolle , Prodr. 9: 344. 1845. (Choisy 1845: 344).

Ipomoea heterophylla Ortega , Nov. Rar. Pl. Descr. Dec. 1: 9. 1797. (Ortega 1797-1800: 9). Type. MEXICO. Horto Regio. C.G. Ortega s.n., lectotype (MA222592) designated by Austin in Sida 14: 452 (1991).

Batatas heterophylla (Ortega) G. Don , Gen. Hist. 4: 261. 1838. (Don 1838: 261).

Pharbitis heterophylla (Ortega) Choisy in A.P. de Candolle , Prodr. 9: 344. 1845. (Choisy 1845: 344).

Aniseia heterophylla (Ortega) Meisn. in Martius et al. , Fl. Brasil. 7: 321. 1869. (Meisner 1869: 321).

Ipomoea ortegae Poir. , Encycl. Suppl. 4: 633. 1816. (Poiret 1814-17: 633), nom. illeg. superfl. Type. Based on Ipomoea heterophylla Ortega

Ipomoea papiru Ruiz & Pav. , Fl. Peruv. 2: 11. 1799. Type. PERU. Tarma, Icon, t. 120, f. a in Ruiz and Pavón (1799) (lectotype designated by McDonald, Fl. Veracruz 77: 96 (1996), cited in error as t. 12).

Convolvulus papiru (Ruiz & Pav.) Spreng. , Syst. Veg. 1: 592. 1825 [pub. 1824]. (Sprengel 1824: 592).

Batatas papiru (Ruiz & Pav.) G. Don , Gen. Hist. 4: 261. 1838. (Don 1838: 261).

Ipomoea subtriloba Ruiz & Pav. , Fl. Peruv. 2: 12. 1799. (Ruiz and Pavón 1799: 12). Type. PERU. Huasa Huasi, Ruiz, Pavón & Dombey s.n. (lectotype MA814673, designated here).

Ipomoea papiru var. subtriloba (Ruiz & Pav.) Pers. , Syn. Pl. 1: 185. 1805. (Persoon 1805: 185).

Batatas subtriloba (Ruiz & Pav.) G. Don , Gen. Hist. 4: 261. 1838. (Don 1838: 261).

? Ipomoea varia Roth, Catal. Bot. fasc. ii. 17. 1798 [dated1800]. (Roth 1798: 17). Type. Not cited.

Convolvulus heterophyllus Willd. , Enum. 207. 1809. (Willdenow 1809: 207), nom. illeg., non Ipomoea heterophylla Ortega (1797) . Type. Plant cultivated at Berlin (holotype B-W 03766).

Ipomoea willdenowii Roem. & Schult. , Syst. Veg. 4: 211. 1819. (Roemer and Schultes 1819: 211). Type. Based on Convolvulus heterophyllus Willd.

Batatas willdenowii (Roem. & Schult.) G. Don , Gen. Hist. 4: 261. 1838. (Don 1838: 261).

Ipomoea hirsuta Schrank, Denkschr. Bot. Ges. Regensb. ii. 30. 1822. (Schrank 1822: 30), nom. illeg., non Ipomoea hirsuta R. Br. (1810) . Type. sine data, (probable type, M0184987, labelled ' Ipomoea hirsuta ').

Ipomoea martiusiana Steud. , Nomencl. Bot. 1: 817. 1840. (Steudel 1840: 817). Type. Based on Ipomoea hirsuta Schrank

Ipomoea lindheimeri var. subintegra House , Ann. New York Acad. Sci. 18 (6): 196. 1908. (House 1908b: 196). Type. UNITED STATES. Arizona (south), near Fort Huachuca, J.G. Lemmon 2835 (holotype GH00054463, isotype K).

Ipomoea heterophylla var. subcomosa House , Ann. New York Acad. Sci. 18: 196. 1908. (House 1908b: 196). Type. MEXICO. Durango, Ciudad Durango, E. Palmer 590 (holotype NY00319095, isotypes BM, F, MO, US).

Type.

AMERICA. Sine data (holotype P-LAM00357477).

Description.

Low trailing or twining herb with slender stems, pubescent in all parts, rootstock a carrot-shaped tuber. Leaves petiolate, 2-6 (-8) × 2-6(-9) cm, ovate, with sinuate margins or, usually 3-5-lobed to near base, lobes oblong-elliptic, narrowed at both ends, acute, shortly mucronate, laterals sometimes shallowly lobed near base, base cordate with rounded auricles, both surfaces densely pubescent; petioles 1-2(-5) cm, pubescent. Inflorescence of solitary or, occasionally paired, axillary flowers; peduncles 1-4 cm, pubescent; bracteoles 4-8 mm long, linear, persistent, pubescent; pedicels 2-10 mm, pubescent; sepals unequal, grey-pubescent or pilose, outer 12-21 × 6-10 mm, ovate, acuminate, base cordate, inner lanceolate, 2-4 mm wide; corolla 4-5 cm long, funnel-shaped, glabrous, tube flushed reddish, limb purplish, c. 2 cm diam., unlobed but midpetaline bands terminating in a tooth. Capsules subglobose, 8-12 mm long, glabrous, enclosed by sepals, 3-locular, up to 6-seeded; seeds 4-6 mm long, minutely tomentellous.

Illustration.

Figures 5H , 121C; O 'Donell (1959b: 219).

Distribution.

Amphitropical in its distribution occurring in the United States and Mexico and along the Andes from Peru south to northern Argentina with an isolated station in central Colombia. It is locally common in dry stony grassland between 2300 and 3900 m, reaching higher altitudes than by any other Ipomoea species except I. plummerae .

ARGENTINA. Catamarca: Belén, G.E. Barboza et al. 606 (CORD). Jujuy: Tumbaya, R. Kiesling 5072 (SI); C. O’Donell 5447 (LIL). Salta: T. Meyer 5015 (LIL); Santa Victoria, E. Zardini et al. 1667 (FCQ, PY). Tucumán: R. Schreiter 10467 (LIL).

BOLIVIA. Chuquisaca: Oropeza, Yotala-Sucre, J.R.I. Wood & J. Gutiérrez 20195 (HSB, K, LPB); Tomina, 14 km S of Padilla, S.G. Beck 6269 (FTG, LPB); Yamparaez, Lamboyo, J.R.I. Wood 17844 (HSB, K, LPB). Cochabamba: Campero, Pasorapa-Buenavista, J.R.I. Wood et al. 19449 (BOLV, HSB, K, LPB, USZ); Capinota, E. Thomas 307 (BOLV, LPB); Punata, Cerro Tuti, A. Fuentes 2657 (MO, USZ); Quillacollo, N. Ritter 671 (NY). La Paz: Murillo, Mecapaca, J. Solomon 7406 (FTG, LPB, NY, MO). Potosí: Charcas, Torotoro, J.R.I. Wood et al. 19215 (BOLV, K, LPB). Santa Cruz: Vallegrande, J.R.I. Wood et al. 27675 (OXF, K, LPB, USZ). Tarija: Arce, Padcaya, M. Serrano et al. 5938 (ARIZ, MO); Cercado, Cuesta del Condor, M. Mendoza 2850 (USZ).

PERU. Ancash: R. Ferreyra 7374 (K). Apurimac: Aymareas, Challhuanca, P. Nuñez 7176 (MO); Grau, C. Vargas 5729 (CUZ). Cajamarca: H. Müller & P. Gutte 8086 (USM). Cusco: Calca, C. Vargas 938 (MO); Urubamba, Pumawanca, P. Nuñez 7467 (CUZ). Huancavelica: O. Tovar 184 (USM). Lima: San Buenaventura, G. Vilcapoma 8012 (USM).

COLOMBIA. Cundinamarca: Mosquera, Laguna de la Herrera, R. Torres 472 (COL); ibid., Z. Espina 409 (COL); ibid., Zanjón de las Cátedras, A. Lourteig & Hernandez 3068 (P, S).

MEXICO. Chihuahua: E.W. Nelson 6159 (K); Guasaremos, Río Mayo, H.S. Gentry 2458 (K, S); near Colonia Garcia, C.H.T. Townsend & C.M. Barber 220 (ASU, BM, K, MO, P); San Buenaventura, M.H. Mayfield et al. 269 (MEXY, TEX). Coahuila: J. Gregg 389 (MO); Sierra de San Marcos, W.L. Minckley s.n. (ASU). Durango: E. Palmer 590 (K); R.L. Oliver et al. 650 (MO); Cerro Prieto-La Providencia, E.W. Nelson 4962 (K). Est. México & Dist. Fed.: F. Cesar et al. 185 (MEXU); Encinillas, T. Croat 44130 (MEXU, MO); M. Bourgeau 625 (P). Guanajuato: J. Rzedowski 49770 (MO); San Nicholas, E. Ventura & E. López 7201 (IEB, MEXU). Hidalgo: C.A. Purpus 1756 (MO); Tepeapulco, F. Ventura 23 (ASU, MEXU). Michoacán: El Fresno, J. Rzedowski 44030 (IEB). Oaxaca: Nochixtlán, A. Ibarra 236 (MEXU). Puebla: E.M. Lira Charco et al. 1580 (MEXU). Querétaro: San Joaquín a Vizarron, E. Carranza & S. Zamudio 6223 (IEB, MEXU). San Luís de Potosí: J. G. Schaffner 426 (P), 619 (K); E. Reeves R-6308 (ASU). Sonora: fide Felger et al. (2012). Veracruz: Cerro al sur de El Limón, C.H. Ramos 212 (MEXU). Zacatecas: Sierra del Astillero, J. Henrickson 13334 (MEXU).

UNITED STATES. Arizona: Santa Cruz County, D.F. & S.K. Austin 7605 (ASU). New Mexico: Luna Co, Baldy Peak, R.D. Worthington 18897 (L).

Typification.

The lectotype of Ipomoea papiru was wrongly cited and is, therefore, corrected above.

Notes.

A usually very distinct species on account of its deeply-lobed, hirsute leaves and ovate, basally cordate, outer sepals. Rare entire-leaved forms occur, for example Wood 17697 from Bolivia. Some specimens from the Chihuahua desert are intermediate with I. lindheimeri .

The root is eaten fide Gutiérrez-R (2016).

Figures

Figure 5. Sepals of Ipomoea species. A Ipomoea descolei B I. paraguariensis C I. australis D I. purpurea (left), I. nil (right) E I. incarnata F I. pintoi G I. maurandioides H I. pubescens. Photographs of A by Hector Keller; B and G by T. Carruthers; C (Wood et al. 27708); E (Wood 27756) and H (Wood 27675) by Beth Williams; D by John Pink; F (Queiroz 15956) by Hibert Huaylla.

Figure 121. Photographs of Ipomoea species. A I. indica B I. hederacea C I. pubescens D I. alba E I. purpurea (colour variants). A John Pink B Steven Turner C Darwin Initiative Project 162 / 11 / 010 D Tom Carruthers E Darwin Initiative Project 162 / 11 / 010.