Thyrsacanthus ramosus ( Nees von Esenbeck 1847a: 112 ) Côrtes & Rapini (2010: 970)

Chagas, Earl Celestino De Oliveira & Costa-Lima, James Lucas Da, 2022, A new combination in Justicia and a new synonym in Thyrsacanthus results in the restriction of Anisacanthus s. str. (Acanthaceae) to Central and North America, Phytotaxa 549 (1), pp. 117-121 : 119-120

publication ID

https://doi.org/ 10.11646/phytotaxa.549.1.11

DOI

https://doi.org/10.5281/zenodo.6608440

persistent identifier

https://treatment.plazi.org/id/03E5879E-FF9F-FFD2-33D2-FC21E6A3FED1

treatment provided by

Plazi

scientific name

Thyrsacanthus ramosus ( Nees von Esenbeck 1847a: 112 ) Côrtes & Rapini (2010: 970)
status

 

Thyrsacanthus ramosus ( Nees von Esenbeck 1847a: 112) Côrtes & Rapini (2010: 970) View in CoL .

Drejera ramosa Nees von Esenbeck (1847a: 112) View in CoL .

Lectotype (designated here):— BRAZIL. “Prov. Goyazana” [Minas Gerais]: “Allegres” [Mun. João Pinheiro], s.d., J. B. E. Pohl 1905 ( GZU ( GZU000249898 View Materials )!; isolectotypes BR ( BR0000006943295 )!, K ( K000529298 )!, W ( W0056712 )!, W ( W0056713 )!).

= Anisacanthus pohlii Lindau (1897: 663) View in CoL . syn. nov.

Lectotype (designated here):— BRAZIL. “Prov. Goyazana” [Minas Gerais]: “Allegres” [Mun. João Pinheiro], s.d., J. B. E. Pohl 1905 ( W ( W0056711 )!; holotype B † = F negative No. 8760!).

Distribution and habitat: — Thyrsacanthus ramosus is endemic to Brazil, recorded for the States of Goiás, Minas Gerais (the type collection), and São Paulo. This species is a scandent shrub inhabiting riverine forests along the tributary water bodies from the Paraná River in the Cerrado domain.

Additional specimens: — BRAZIL. Goiás: Mun. Corumbaíba, margem esquerda do rio Corumbá , próximo ao eixo da barragem, 25 June 1993 (fl, fr), H . G .P. Santos et al. 122 ( CEN, SPF – 2 sheets) . São Paulo: Mun. Mogi-Guaçu, Reserva Biológica e Estação Experimental de Mogi-Guaçu , Mata do Cassimiro , 20 July 1992 (fl), C . E .O. Lohmann et al. 21 ( HUEFS, SP, US).

Notes: —The Nees von Esenbeck’s Acanthaceae monographs in Martius’ “ Flora Brasiliensis ” ( Nees von Esenbeck 1847a) and in De Candolle’s “ Prodromus ” ( Nees von Esenbeck 1847b) were published a few months apart (see Stafleu & Cowan 1976: 446, 1981: 336, 708). Because “ Flora Brasiliensis ” was published first, the names treated there have priority over the same names in the “ Prodromus ,” which are isonyms (see Principle III and Art. 6 Note 2; Turland et al. 2018) although Nees von Esenbeck (1847a) hardly mentions the collections he relied on to describe his new names. In contrast, in “ Prodromus ,” Nees von Esenbeck (1847b) almost always names the herbarium where he saw the specimens. Côrtes et al. (2010) mentioned that the “ holotype ” of Drejera ramosa is housed at GZU. Four specimens that correspond to the original material annotated by Nees von Esenbeck (1847a) were found at BR, GZU, K and W. However, according to Art. 9.4 of the ICN, all the specimens belonging to the type collection are syntypes, because a single specimen was not designated as the type in the protologue Nees von Esenbeck (e.g., Nees von Esenbeck 1847a). To avoid future confusion, the same specimen at GZU (GZU000249898) formerly cited by Côrtes et al. (2010) as “ holotype ” has been chosen as the lectotype.

After we studied specimens at W, we realized that the types of Anisacanthus pohlii and Drejera ramosa correspond to a single J.E. Pohl’s gathering from the collection of the Austrian expedition to Brazil (1817–1835). All specimens have branches and leaves with hispid indumentum, leaf-blades with markedly impressed secondary veins, and inflorescences with secund flowers (originally decussate but with one flower per node aborted and alternately arranged, giving the impression of being secund). The number “1905,” cited by Lindau (1897) for A. pohlii , matches the Pohl’s diary number; while the number “2944,” cited by Nees von Esenbeck (1847b) for D. ramosa , to the “Herbarium Brasiliense” series.

Therefore, Anisacanthus pohlii is here proposed as a synonym of D. ramosa . Additionally, we chose one of the three specimens at W ( Fig. 2B View FIGURE 2 ) as the lectotype for A. pohlii because its holotype was destroyed in World War II (Art. 9.3; Turland et al. 2018).

J

University of the Witwatersrand

B

Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet

E

Royal Botanic Garden Edinburgh

GZU

Karl-Franzens-Universität Graz

BR

Embrapa Agrobiology Diazothrophic Microbial Culture Collection

K

Royal Botanic Gardens

W

Naturhistorisches Museum Wien

F

Field Museum of Natural History, Botany Department

H

University of Helsinki

G

Conservatoire et Jardin botaniques de la Ville de Genève

CEN

EMBRAPA Recursos Geneticos e Biotecnologia - CENARGEN

SPF

Universidade de São Paulo

C

University of Copenhagen

HUEFS

Universidade Estadual de Feira de Santana

SP

Instituto de Botânica

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Acanthaceae

Genus

Thyrsacanthus

Loc

Thyrsacanthus ramosus ( Nees von Esenbeck 1847a: 112 ) Côrtes & Rapini (2010: 970)

Chagas, Earl Celestino De Oliveira & Costa-Lima, James Lucas Da 2022
2022
Loc

Thyrsacanthus ramosus ( Nees von Esenbeck 1847a: 112 ) Côrtes & Rapini (2010: 970)

Cortes, A. L. A. & Borges, R. L. B. & Rapini, A. 2010: 112
2010
Loc

Anisacanthus pohlii

Lindau, G. 1897: )
1897
Loc

Drejera ramosa

Nees von Esenbeck, C. G. D. 1847: )
1847
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