Calea elongata (Gardner) Baker (1884: 255–256) ≡ Meyeria elongata Gardner (1848: 415)

Protologue:—“In boggy places on the Serra de Natividade, Province of Goyaz. Jan. 1840, G. Gardner 3856 ”.

Lectotype (designated here):— BRAZIL. Goiás [Tocantins]: Natividade, in boggy places on the Serra de Natividade, Jan. 1840, G. Gardner 3856 (BM [BM00100975], digital image!; isolectotypes E [E00417444], digital image!; E [E 00417445], digital image!; F [F974764], digital image!; F [F1022548], digital image!; G [G00222850], digital image!; G [G00222851], digital image!; K [K000895287]!; K [K000895298]!; NY [NY00215066]!; NY [NY00215067]!; P [P02140711]!; P [P02140712]!; P [P02140713]; US [US1066823]!; US [US1802955]!; W [W18890006666]).

Note:— Gardner (1848) mentioned the collection number “3856” in the publication of the basionym Meyeria elongata . The specimen deposited in BM [00100975] is a representative of the species and is in accordance with the protologue because it is the only specimen that has the collection data from January 1840 at Serra da Natividade indicated on the label, in accordance with the date when Gardner (1848) was in Natividade.

Baker (1884) synonymized “ Wedelia scaberrima Pohl ” and “ Calea scaberrima Schultz ” pro synonymo under C. elongata . This species occurs in Bahia, Goiás, and Tocantins (Fig. 2).