Ipomoea mauritiana Jacq., Collectanea

A. P. S, Lima, M. T. A., Buril & Melo, J. I. M. de, 2024, Synopsis of Ipomoea (Convolvulaceae) in the state of Paraíba, Brazilian Northeastern, Rheedea 34 (5), pp. 430-456 : 448-449

24. Ipomoea mauritiana Jacq., Collectanea 4: 216. 1791. Fig. 6e–f

Flowering & fruiting: Flowering in January; fruiting not seen.

Distribution: Common in the equatorial region of the globe. In Brazil, it grows in the Amazon, Caatinga and Atlantic Forest domains but has not been recorded in the South region ( Wood et al., 2020; Simão-Bianchini et al., 2024). This is the first record for Paraíba. However, we consider it possibly locally extinct, as we found only one record, dating back more than 30 years, in the IR of João Pessoa, located in a municipality with a Caatinga-Atlantic Forest transition area.

Specimens examined: BRAZIL, Itapororoca, Fazenda Macacos , 23.01.1987, fl., L . P . Félix 1509 ( EAN!, HST!) .

Notes: It was often misidentified in the herbaria as I. cairica , which does not occur in the study area. The two species are completely different: I. cairica has compound leaves and pseudostipules, while I. mauritiana has simple, deeply 5–7-palmatilobated leaves and lacks pseudostipules.

Figures

Fig. 6. a-d. Ipomoea longibracteolata Sim.-Bianch. & J.R.I. Wood: a. Leaf; b. Leaf indument; c. Flower with closed corolla; d. Bracteole. e-f. I. mauritianaJacq.: e. Leaf; f. Calyx. g. I. megapotamica Choisy,Calyx emphasizing the prominent basolateral glands. h-j. I. meyeri (Spreng.) G.Don: h. Reproductive branch; i. Inner sepal; j. Outer sepal. k-m. I. ramosissima (Poir.) Choisy: k. Reproductive branch; l. Outer sepal; m. Inner sepal. n. I. squamosa Choisy: Calyx. o-p. I. tenera Meisner: o. Reproductive branch; p. Calyx. q. I. tiliacea (Willd.) Choisy: Inflorescence. r. I. grandifolia (Dammer) O’Donell: Calyx. s. I. violacea L.: Reproductive branch (Drawn by F. Martins).