Ipomoea heptaphylla Sweet

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

374. Ipomoea heptaphylla Sweet , Hort. Brit., ed. 2: 372. 1830. (Sweet 1830: 372)

Convolvulus heptaphyllus Roxb., Fl. Ind. , ed. 2, 2: 66. 1824. (Roxburgh 1824: 66), nom. illeg., non Convolvulus heptaphyllus Rottler & Willd.(1803) . Type. Icon. no. 1950 by Roxburgh (K, lectotype, designated by Verdcourt 1961: 11).

Ipomoea radicans Bertero ex Choisy in A.P. de Candolle , Prodr. 9: 387. 1845. (Choisy 1845: 387), nom. illeg., non Ipomoea radicans Blume (1826) . Type. JAMAICA. Bertero s.n. (wherabouts uncertain,?TO).

Ipomoea capillifolia Bertero ex Choisy in A.P. de Candolle , Prodr. 9: 388. 1845. (Choisy 1845: 337), nom.nud.

Ipomoea wrightii A. Gray, Syn. Fl. N. Amer. 2: 213. 1878. (Gray 1878: 213). Type. UNITED STATES. Texas. C. Wright s.n. (holotype GH00054467, isotype GH).

Ipomoea spiralis House , Muhlenbergia 3: 40 1907. (House 1907a: 40). Type. MEXICO. E. Palmer 24 (isotype US).

Ipomoea gracilipes Hassl., Fedde , Repert. Spec. Nov. Regni Veg.9: 158. 1911. Hassler (1911: 158). Type. PARAGUAY. zwischen Río Apa und Río Aquidaban, Rojas in Hassler 10907, K. Fiebrig 4936, 5744 (syntypes BM, GH, K000612826!, M).

Ipomoea pulchella var. lineariloba Hassl., Fedde , Repert. Spec. Nov. Regni Veg.9: 158. 1911. (Hassler 1911: 158). Type. PARAGUAY. Gran Chaco, Santa Elisa, E. Hassler 2762 (lectotype G00175236, designated here; isolectotypes BM, G, K, P).

Ipomoea pulchella auct., non Roth (1821), which is I. cairica (L.) Sweet (Verdcourt, 1961).

Type.

Based on Convolvulus heptaphyllus Roxb.

Description.

Twining annual herb, plant completely glabrous in all parts. Leaves petiolate, divided into 5-7 separate sessile leaflets, leaflets 3-7 × 0.3-1 cm, narrowly lanceolate, acuminate at both ends; petioles 2.5-5.5 cm. Flowers solitary (rarely paired), axillary, pedunculate; peduncles slender, flexuose and sometimes coiled, 3-6 cm long; bracteoles minute, c. 1 mm, scale-like, caducous; pedicels 5-8 mm, stouter than peduncles; sepals subequal, 5-7 mm, scarious-margined, outer 4-5 × 2.5-3 mm, ovate, obtuse, abaxially slightly muricate, inner 5-6 × 3 mm, broadly oblong, rounded; corolla 1.7-2.2 cm long, funnel-shaped, pink, glabrous; limb c. 1 cm diam. Capsules 10 × 7 mm, ovoid, glabrous; seeds 5 × 2.5 mm, tomentose.

Illustration.

Figure 181 ; Acevedo-Rodríguez (2005: 183) as Ipomoea wrightii .

Distribution.

Widely distributed throughout the neotropics but scattered, often ephemeral, never very common and unrecorded in some areas, for example Colombia, where it might be expected to occur. It seems to favour dry parts of islands and seasonally dry areas such as the Brazilian Caatinga and the Chaco region.

PARAGUAY. Alto Paraguay: Gabino Mendoza-Lagarenza, R. Degen & F. Mereles 3288 (FCQ); Capitan Pablo Lagerenza, A. Charpin & L. Ramella 21584 (G). Boquerón: Krapovickas et al. 45288 (CTES). Misiones: IslaYacyretá, S. Keel et al. 1365 (FCQ). Presidente Hayes: Santa Asunçion, J. de Egea & M. Peña-Chocarro 272 (BM, FCQ). San Pedro: A. Krapovickas & C. Cristóbal 44907 (CTES).

BRAZIL. Bahia: Lagoa da Eugenia, R.M. Harley et al. 16282 (K, MO, NY, RB); João Dorado, L.V. Vasconcelos 462 (RB). Ceará: Ipaumirim, J.L. Costa-Lima 1208 (HUES, RB); Penaforte, A.P.B. Santos 2 (HVASF). Mato Grosso: Caceres, 9 km ENE de Porto Esperidiao, A. Krapovickas et al. 40113 (CTES); Barão de Melgaço, G. Martinelli 18598 (RB). Minas Gerais: Barbacena, A.F.M. Glaziou 13028 (BM, K, NY, P); G. Hatschbach et al. 52183 (CTES). Paraíba: Cajazeiras-Brejo das Freiras, C. Miranda s.n. (JPB). Pernambuco: G. Gardner s.n. [May 1838] (BM, K); Pedra Furada, M. Grillo 68 (PEUFR). Piauí: A. Krapovickas et al. 38612 (CTES). Rio Grande do Norte: José de Penha, J.L. Costa-Lima 1362 (RB).

BOLIVIA. Santa Cruz: Chiquitos, El Tinto, J.R.I. Wood & D. Soto 27105 (K, LPB, USZ); Cordillera, P.N. Kaa-Iya, A. Fuentes & G. Navarro 2524 (LPB, USZ); Germán Busch, R. Frey et al. 507 (K, MO).

PERU. Lambayeque: C. Abad & J. Orrillo s.n. (USM); East side of Chiclayo, J. Hudson 946 (MO). Tumbes: A. Sagástegui 14597 (MO).

ECUADOR. Galapagos Islands: Fagerlind & Wibom 2807 (S); San Cristóbal, C. Huttel 1766 (QCA). Guayas: G. Harling & L. Andersson 14616 (GB).

VENEZUELA. Anzoátegui: W.A. Díaz 6724 (MO). Falcón: R.C. Wingfield 7189 (MO).

COSTA RICA. Bagaces, P.N. Palo Verde, U. Chavarría 1046 (MO).

EL SALVADOR. Ahuachapan, J.M. Rosales 2309 (MO).

GUATEMALA. Petén, P.N.Tikal, C.L. Lundell 16907 (MO).

MEXICO. Campeche: La Tuxpeña, C.L. Lundell 979 (K, MO, US). Jalisco: La Huerta, Rancho Cuixmala, E. Lott et al. 2869 (F, MEXU, MO, NY). Sonora: Bácum, R. Felger & F.W. Rechenbacher 85-1264 (ARIZ, MEXU, TEX).

UNITED STATES. Alabama: Houston, Dotham, J.R. McDonald 8102 (IBE). Arkansas: Drew, R. D. Thomas et al. 158031 (MISS). Georgia: Calhoun Co., J.R. Allison 9468 (GA). Florida: fide Wunderlin and Hansen (2011: 392). Louisiana: Tendal, D. Dixon 4298 (VSC). Mississippi: Lowndes, J.D. Bryson 20417 (ARIZ, MMNS). Tennessee: R. Kral 64384 (FSU). Texas: type of Ipomoea wrightii .

CUBA. Cienfuegos: R.A. Howard 5398 (NY). La Habana: Bro. León 13711 (HAC, HAJB, NY). Oriente: E.L. Ekman 1412 (S), 7364 (NY, S). Villa Clara: J.G. Jack 6711 (A, NY, S).

JAMAICA. C.D. Adams 11896 (BM, MO); G.R. Proctor 38167 (MO, NY).

HAITI. Port-au-Prince, E.L. Ekman H2074 (NY, S).

PUERTO RICO. P. Sintenis 3619 (BM, K, S).

LESSER ANTILLES. Antigua: H.E. Box 1201 (BM, MO). Guadeloupe: A. Duss 4115 (NY). Barbados: fide Gooding et al. (1965).

NETHERLANDS ANTILLES. Aruba: R.A. Howard 20303 (NY). Bonaire: fide Proosdij (2012). Curaçao: A.S. J. van Proosdij et al. 568 (NY, U).

Notes.

Distinguished from other species with 5-foliolate leaves, by the annual habit, small flowers and slender flexuose peduncles.

The plant from which the type of this species was drawn appeared amongst cultivated material in the Calcutta Botanic Garden (Roxburgh 1824) but the species is otherwise unknown in the Old World.

Figures

Figure 181. Ipomoea heptaphylla. A habit B outer sepal C inner sepal D corolla opened up to show stamens E ovary and style F fruiting calyx G seeds. Drawn by Rosemary Wise A-F from Wood & Soto 27105; G from De Egea & Pena-Chocarro 272.