Ipomoea steudelii Millsp.

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

203. Ipomoea steudelii Millsp. , Publ. Field. Columb. Mus., Bot. Ser. 2 (1): 86. 1900. (Millspaugh 1900: 86)

Exogonium arenarium Choisy, Mem , Soc. Phys. Genève 8: 129 [51]. 1838. (Choisy 1838: 129[51]). Type. PUERTO RICO. C.L.G. Bertero s.n. (lectotype G00135397, designated by Austin 1977: 337).

Ipomoea arenaria (Choisy) Steud. , Nomencl. Bot. 1: 815. 1841. (Steudel 1840: 815), non Ipomoea arenaria Roem. & Schult. (1819) .

Ipomoea arenaria var. integerrima Kuntze , Rev. Gen. 2: 442. 1891. (Kuntze 1891: 442), nom. illeg., type var.

Ipomoea arenaria var. palmatifida Kuntze , Rev. Gen. 2: 442. 1891. (Kuntze 1891: 442), Type. PUERTO RICO. Guayama (no type specified).

Type.

Based on Exogonium arenarium Choisy

Diagnosis. Almost identical to Ipomoea eggersiana in habit, leaves and fruit but corolla crimson, subcylindrical, the limb hypocrateriform, c. 2.5 cm wide, distinctly lobed, the lobes 6-7 mm long, stamens exserted.

Illustration.

Acevedo-Rodríguez (2005: 178); Figure 105H .

Distribution.

Almost endemic to Puerto Rico but also present on a few small nearby islands and apparently in Haiti, although this is based on an old record that requires confirmation.

HAITI. P.A. Poiteau s.n. (fide Liogier 1994: 92).

PUERTO RICO. Santana, P. Sintenis 3226 (BM, K, S), 5540 (S); W. Drucker 138 (BM); A.P. Garber 126 (K); Bayamon, A.H. Liogier 10693 (NY), 10699 (NY); Susúa, A. H. Liogier et al. 29636 (NY); Caja de Muertos Islands, R.O. Woodbury et al. MB202 (MO, NY). Also on adjacent islands of Culebra, Culebrita, Vieques Islands, fide Acevedo-Rodríquez (2005).

Figures

Figure 105. A-G Ipomoea eggersiana. A habit B outer sepal C inner sepal D corolla opened out to show stamens E style F fruiting inflorescence with capsules G seed. Ipomoea steudelii. H corolla. Drawn by Rosemary Wise A from von Rohr s. n.; B-G from Urote 35; H from Drucker 138.