Calea gardneriana Baker (1884: 255) ≡ Meyeria angustifolia Gardner (1848: 414)

Protologue:—“Bushy places near Villa de Natividade, Province of Goyas. April, 1840, G. Gardner 3282 ”.

Lectotype (designated here):— BRAZIL. Goiás [Tocantins]: Natividade, bushy places, Jan. 1840, G. Gardner 3282 (BM [BM001009793], digital image!; isolectotypes P [P020140718]!; P [P020140719]!; P [P020140720]!; US [US1802953]!; W [W0043959], digital image!).

Note:—Baker (1884) published the new name C. gardneriana, based on Meyeria angustifolia, since the specific epithet “ angustifolia ” was already preoccupied by Calea angustifolia Gardner (1848: 417) . There are several duplicate specimens from the gathering Gardner 3282. The specimen BM [001009793] was chosen as a lectotype because, among the syntypes, this is one of the few that contains a label indicating that the material was collected in Natividade. The other is a specimen that was kept in the herbarium at K [000895286], however the material deposited in the BM herbarium was prioritized because the label has information more consistent with the protologue as to the date of collection.

Calea gardneriana occurs (Fig. 2) in Bahia, Goiás, Maranhão, Mato Grosso, and Tocantins states (Reis-Silva et al. 2024). We recorded the occurrence of this species in Maranhão state [EAC5924] for the first time.