Calea myrtifolia ( Candolle 1836: 670 ) Baker (1884: 260)

Bueno, Vinicius R., Reis-Silva, Genilson A., Nakajima, Jimi N., Gostel, Morgan R. & Heiden, Gustavo, 2025, A new narrower circumscription and a nomenclatural synopsis for Calea subg. Meyeria (Asteraceae: Neurolaeneae), Phytotaxa 683 (3), pp. 273-280 : 276

Calea myrtifolia ( Candolle 1836: 670) Baker (1884: 260) .

Meyeria myrtifolia Candolle (1836: 670) .

Protologue:—“In Brasiliae prov. Minarum-Generalium prope Tejuco Vauthier 370!”.

Lectotype (designated here):— BRAZIL. Minas Gerais: Diamantina, 1833, A.C.Vauthier 320 ( GDC [ 00456458 ], digital image!; isolectotype G [ 00456458 ], digital image!; G [ 00222839 ], digital image!; GH [ 00589157 ], digital image!; GH [ 00589158 ], digital image!; P [ 02140745 ]!; P [ 02140746 ]!; P [ 02140747 ]!; W [ 0043963 ], digital image!).

= Calea myrtifolia var. paucidentata Baker (1884: 260) .

Protologue:—“Habitat in prov. Minas Geraes ad Diamantina: Vauthier!; in campis altis ferruginosis ad Pires et Congonhas do Campo: Martius!; ad Cachoeira do Campo: Claussen!; in campis editis ad João d´el Rey: Martius!; prope Rio de Janeiro: Glaziou n. 11054!; praeterea: Sello n. 1339!. Riedel!”

= Calea myrtifolia var. paucidentata Sch.Bip. ex Baker (1884: 260) .

Lectotype (designated by Pruski 2023):— BRAZIL. Minas Gerais: Catas Altas, Serra do Caraça , L. Riedel 1427 ( LE [not found]; isolectotypes G [ 00412260 ], digital image!; K [ K000323152 ]!; P [ P02469708 ]!; P [ P02469709 ]!; P [ P02469710 ]!).

Remaining syntypes:— BRAZIL. Minas Gerais: Antônio Carlos, Sítio João Ayres , A. Glaziou 11054 ( K [ K01103654 ]!; P [ P02469714 ]!). BRAZIL. Minas Gerais: São João Del-Rei, 1830, F. Sellow 1339 ( K [ K001103655 ]. BRAZIL. Minas Gerais: Congonhas, K.F.P. Martius [not seen]. Minas Gerais: São João Del-Rei, K.F.P. Martius [not seen]. Minas Gerais: Ouro Preto, Cachoeira do Campo , 1840, P. Claussen s.n. ( K [ K000323384 ]!; K [ 000323152 ]!; K [ K02469709 ]!; P [ P02469715 ]; P [ P02469718 ]!).

Note:— Pruski (2023) indicated that C. myrtifolia has a holotype, but the Vauthier 320 collection corresponds to several syntypes: G00456458, G00222839, GDC 00456458, GH00589157, GH00589158, P02140745, P02140746, P02140747, W0043963. Therefore, it is necessary to choose a lectotype from the available syntypes. The specimen chosen is from the G-DC herbarium where Candolle was based.

The protologue information indicates the type specimen of C. myrtifolia as the collection A.C. Vauthier 370; however, the number 370 is a typo, since we noticed that the correct handwritten number is 320.

Pruski (2023) has synonymized and lectotypified C. myrtifolia var. paucidentata . We found additional isolectotypes not cited by Pruski (2023): P02469708, P02469709, P02469710. Pruski (2023) indicated the materials from L. Riedel as a lectotype and cited those from P. Claussen as remaining syntypes. The following collections are also synonyms: A. Glaziou 11054, F. Sellow 1339 and the two of K. F. P. Martius already mentioned.