Ipomoea calyptrata Dammer, Bot. Jahrb. Syst.

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 : 442

11. Ipomoea calyptrata Dammer, Bot. Jahrb. Syst. , 57: 40. 1897. Fig. 4j–k

Flowering & fruiting: Flowering from February to April; fruiting not seen.

Distribution: Disjointly distributed in Bolivia and Brazil ( Wood et al., 2020); found in the Caatinga and Cerrado domains, in the states of Minas Gerais, Bahia ( Simão-Bianchini et al., 2024), and Ceará ( Santos et al., 2020a); recorded for the first time in Paraiba state. Four populations were found in the Caatinga of the IRs of Cajazeiras, Patos, and Campina Grande.

Specimens examined: BRAZIL, Cabaceiras, Sítio Bravo , 11 km Sul de Boa Vista, 31.03.1992, fl., V . L .

Nascimento et al. 70 (JPB!); Cajazeiras, Balneário

Bartolomeu, acesso pela PB 400, Jazida Pedreira,

12.04.2012, fl., V.M. Cotarelli 1711 (HVASF, digital image!); Cajazeiras, Balneário Bartolomeu, sentido

São José de Piranhas, Sítio Timbaúba, 10.04.2012,

fl., V.M. Cotarelli 1597 (HVASF, digital image!);

Maturéia , Pico do Jabre, 07.02.1998, fl., M . F . Agra et al. 4957 ( JPB) .

Notes: This species was misidentified in the collections as I. brasiliana . The two species are similar in that both have tomentose branches and leaves, with the abaxial surface densely tomentose and prominent veins. The adaxial surface can vary from sparsely pubescent to tomentose, and both species have an entirely purplish or pinkish corolla with a purplish mouth. However, they differ in that I. calyptrata has persistent, oblong to obovate, and wedge-shaped (boat-shaped) bracteoles, while I. brasiliana has deciduous, elliptical or lanceolate bracteoles.

Figures

Fig. 4. a-b. Ipomoea acanthocarpa (Choisy) Hochst. ex Schweinf. & Asch.: a. Calyx; b. Fruit. c-e. I. aristolochiifolia G.Don; c. Reproductive branch,emphasizing the peduncle arising through the sinus at the base of the leaf; d. Calyx; e. Fruit. f-g. I. batatas (L.) Lamarck: f. Sepals;g. Fruit. h. I. batatoides Choisy: Reproductive branch. i: I. blanchetti Choisy: Reproductive branch. j-k. I. calyptrata Dammer: j. Reproductive branch; k. Calyx with persistent bracteoles. l. I. decipiens Dammer: Open calyx–posterior view. m-p. I. eremnobrocha D.F. Austin,: m. Reproductive branch; n. Sericeous indument and glands on the adaxial surface of the leaf; o. Flower, emphasizing the campanulate corolla; p. Fruit. q. I. hederifolia L., Inflorescence.r. I. heptaphylla Sweet, Reproductive branch.s. I. incarnata (Vahl) Choisy,Calyx and bracteoles (Drawn by F.Martins).