Distimake discoidesperma (Donn.Sm.) Petrongari, A.R. Simões & Sim.-Bianch. 2024

Distimake discoidesperma (Donn.Sm.) Petrongari, A.R. Simões & Sim.-Bianch. View in CoL , comb. nov. Ipomoea discoidesperma Donn.Sm., Bot. Gaz. View in CoL 14: 27. 1889. Operculina discoidesperma (Donn. Sm.) House, Muhlenbergia View in CoL 5: 68. 1909. Merremia discoidesperma (Donn.Sm.) O’Donell, Lilloa View in CoL 6: 495. 1941. Lectotype (Step I O’Donell, 1941, pg. 495,

step II designated here): GUATEMALA, Alta Verapaz, Pansamalá, alt. 3800 ft., 6.1885, H. von Tüerckheim 744 ( US [ US 00111388, digital image!]; isolect: US [ US 00111389, digital image!]).

Operculina populifolia Hallier f., Symb. Antill. 7: 342. 1912. Lectotype ( Staples et al., 2020: 131): CUBA, s.d., C. Wright 3083 (MO [MO-150302, digital image!] [the duplicates of Wright 3083 are not isolecto as they have been mounted mixed with Operculina hamiltonii (G. Don) D. F. Austin &

Staples in most of herbaria (GH, NY apud. Staples et al., 2020)].

Distribution: Costa Rica, Guatemala, Nicaragua,

Cuba, Dominican Republic, Haiti, and Chiapas

Province in Mexico, in wet and mixed forest. Notes: Tropicos (http://www.tropicos.org) states that the lectotype of Ipomoea discoidesperma was designated by Standley and Williams (1970). However, O’Donell (1941) had already inadvertently lectotypified the name since he cited as type only one of the two syntypes provided in the protologue of I. discoidesperma . There is a need for a second-step lectotypification, since there are two specimens for this collection at US herbarium, both of which were seen by O’Donell, as he cited in the examined material list ( O’Donell, 1941). We select the specimen [ US 00111388] as the lectotype, since it has more reproductive elements (flowers and fruits).