Ipomoea guaranitica Chodat & Hassl.

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

50. Ipomoea guaranitica Chodat & Hassl. , Bull. Herb. Boiss. Ser. 2: 5: 688. 1905. (Chodat and Hassler 1905: 688)

Ipomoea patula var. villosa Meisn. in Martius et al. , Fl. Brasil. 7: 240. 1869. (Meisner 1869: 240). Type. BRAZIL (south), F. Sello(w) 5089 (photo F of specimen at B destroyed in 1943).

Ipomoea cornucopia Chodat & Hassl., Bull. Herb. Boiss. , ser. 2, 5: 688 (Chodat and Hassler 1905: 688). Type. PARAGUAY. Canindeyú. Río Capabary, Yerbales, Sierra de Maracayú, Sept. 1898, E. Hassler 4474 (lectotype G00288030, designated by Wood and Scotland 2017a: 11).

Type.

PARAGUAY. Canindeyú, Ipé hú, Yerbales, Sierra de Maracayu, Oct. 1898, E. Hassler 5008 (lectotype G00174894, designated by Wood and Scotland (2017a: 11), isolectotypes BM, G, K, NY, P, UC).

Description.

Erect undershrub to 1 m with a stout stem, the whole plant densely grey-tomentose. Leaves very shortly petiolate, 10-14 × 3-6 cm, oblong-oblanceolate, obovate or narrowly elliptic, subacute, very shortly mucronate, cuneate at base; petioles 2-3 mm. Flowers solitary, arising in the upper leaf axils; peduncles 2.5-5 cm; bracteoles 1.5-3.5 cm, linear-lanceolate, acuminate, born below the calyx; pedicels absent or nearly so; sepals subequal, 18-22 mm, narrowly ovate to elliptic, obtuse, densely villous-tomentose; corolla 7-9 cm long, pink, funnel-shaped, pilose on midpetaline bands, limb 6 cm diam., undulate. Capsules and seeds not seen.

Illustration.

Figure 36 .

Distribution.

Eastern Paraguay and neighbouring parts of Brazil in “campo”. There have been no records from Paraguay for about a hundred years.

PARAGUAY. Alto Paraná: K. Fiebrig 6037 (GH). Caaguazú: B. Balansa 1075 (P); Río Yhu, E. Hassler 9510 & 9510a (MO, BM, P, S). Canindeyú: type collection.

BRAZIL. Paraná: km 127, Laranjeiras do Sul, G. Hatschbach et al. 23119 (MO, NY, S, US).

Rio Grande do Sul: entre Panamba & Palmeiras, Lima 64 -4234 (IPA); Neu Württemberg, Palmeraquelle, A. Bornmüller 768 (GH); Palmeira, B. Rambo 51964 (S). Santa Catarina: 8-13 km W. of Chapecó, L.B. Smith & R.M. Klein 14056 (NY, US).

Note.

This species is distinguished by the dense floccose indumentum, obovate -oblanceolate leaves, and the long pedunculate solitary flowers lacking pedicels.

Figures

Figure 36. Ipomoea guaranitica. A habit B bracteoles C outer sepal D middle sepal E inner sepal. Drawn by Rosemary Wise from Balansa 1075.