Ipomoea decipiens 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 : 443

13. Ipomoea decipiens Dammer, Bot. Jahrb. Syst. 57: 40. 1897. Figs. 3i & 4l

Flowering & fruiting: Flowering from March to November; fruiting not seen.

Distribution: Endemic to Brazil, occurs in the Caatinga and Atlantic Forest domains, in the Southeast, with records only in the states of Minas Gerais and Rio de Janeiro, and in the Northeast, in Bahia ( Simão-Bianchini et al., 2024), Ceará ( Santos et al., 2020b) and Paraíba (Lima & Melo, 2019). In the study area, it is occasional, with few records in the IRs of Campina Grande, João Pessoa, and Patos , in areas of Atlantic Forest and Caatinga.

Specimens examined: BRAZIL, Cuité, Sítio Olho d’ Á gua da Bica , 14.07.2012, fl., V. F . Sousa s.n. ( HCES540 !); Maturéia, Parque Estadual Pico do Jabre , 23.03.2023, A. P. S . Lima 49 ( HACAM!). Serraria , 18.06.2003, fl., S . Pitrez 301 ( EAN!) .

Notes: This liana is recognized by the combination of the following characters: simple, entire leaves with a cordate or oval leaf blade, either entirely glabrousorpubescentwithglandularpunctuations; a corolla 4–7 cm long, infundibuliform and pubescent, pink with a purplish tube and included stamens. It is distinguished from all other species in the study area by its unequal, coriaceous sepals: the outer ones are oval with an obtuse, mucronate apex, while the inner ones are suborbicular with an emarginate, mucronate apex and wide, conspicuous scarious margins (yellowish in herbarium material). The intermediate sepal is asymmetrical.

Figures

Fig. 3. a. Ipomoea acanthocarpa (Choisy) Hochst. ex Schweinf. & Asch., Inflorescence–side view. b. I. alba L., Inflorescence–side view. c. I. asarifolia (Desr.) Roem. & Schult., Habit. d. I. bahiensis Willd. ex Roemer & Schultes, Inflorescence–lateral view emphasizing the calyx with subapical rostrum.e. I. batatas (L.) Lamarck,Flower–side view.f. I. blanchetti Choisy, Habit emphasizing the three-lobed leaf.g. I. brasiliana (Mart. ex Choisy) Meisner var.subincana (Choisy) J.R.I. Wood & Scotland, reproductive branch. h. I. carnea Jacq. subsp. fistulosa (Mart. ex Choisy) D.F. Austin, Habit. i. I. decipiens Dammer, Inflorescence. j–k. I. imperati (Vahl) Grisebach: j. Habit; k. Flower– top view (Photos a. B.F. Rocha; b-c, e. A.P.S. Lima; d. C.C. Correia;f. M.G.M. Gonçalves; g. E.M. Rodrigues; h. K.A. GorgÔnio;i-k. I.C.M. Albuquerque).

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).