Pontederia cordata L., Sp. Pl. 1: 288. 1753.

Pellegrini, Marco O. O., Horn, Charles N. & Almeida, Rafael F., 2018, Total evidence phylogeny of Pontederiaceae (Commelinales) sheds light on the necessity of its recircumscription and synopsis of Pontederia L., PhytoKeys 108, pp. 25-83 : 25

publication ID

https://dx.doi.org/10.3897/phytokeys.108.27652

persistent identifier

https://treatment.plazi.org/id/EFAC9A7C-DEB1-86C0-3A49-D801E4694E9F

treatment provided by

PhytoKeys by Pensoft

scientific name

Pontederia cordata L., Sp. Pl. 1: 288. 1753.
status

 

5.1. Pontederia cordata L., Sp. Pl. 1: 288. 1753.

Unisema cordata (L.) Farw., Pap. Michigan Acad. Sci. 3: 91. 1924.

Narukila cordata (L.) Nieuwl., Amer. Midl. Naturalist 3: 101. 1913. Lectotype (designated by Reveal et al. 1987). UNITED STATES. Virginia and Maryland, fl., fr., s.dat., P. Kalm s.n. (LINN barcode LINN-HL407-4).

Pontederia lancifolia Muhl., Cat. Pl. Amer. Sept.: 34. 1813.

Unisema cordata fo. lancifolia (Muhl.) Farw., Pap. Michigan Acad. Sci. 3: 92. 1924.

Narukila cordata var. lancifolia (Muhl.) Nieuwl., Repert. Spec. Nov. Regni Veg. 12: 101. 1913.

Pontederia cordata var. lancifolia (Muhl.) Torr., Fl. N. Middle United States: 343. 1824. Lectotype (designated by Lowden 1973). UNITED STATES. Carolina, fl., fr., s.dat., G.H.E. Muhlenberg 242 (PH barcode PH00033652!).

Distribution.

Widely distributed in North, Central and South America from Canada to Uruguay and the West Indies.

Taxonomical notes.

Pontederia cordata has always been the origin of much debate and taxonomical confusion in the genus. Most of the species currently accepted by us in Pontederia s.l. have either been confused or compared with P. cordata , at some point. This can be demonstrated by how many of them have been treated either as synonyms or infraspecific taxa by different authors ( Fernald 1950; Lowden 1973; Godfrey & Wooten 1979; Novelo & Lot 1994). Pontederia cordata is morphologically and phylogenetically related to P. lancifolia , with only weak differences related to leaf morphology, thus should not be recognised taxonomically. Otherwise, we believe that, based on the current phylogenetic and morphological data, P. cordata , P. ovalis , P. parviflora and P. sagittata should be treated at the species level, until further studies can properly deal with the problem.

Kingdom

Plantae

Phylum

Tracheophyta

Class

Liliopsida

Order

Commelinales

Family

Pontederiaceae

Genus

Pontederia

Loc

Pontederia cordata L., Sp. Pl. 1: 288. 1753.

Pellegrini, Marco O. O., Horn, Charles N. & Almeida, Rafael F. 2018
2018
Loc

Narukila cordata

Nieuwl 1913
1913
Loc

Unisema cordata

Raf. 1808
1808
Loc

Unisema cordata fo. lancifolia

Raf. 1808
1808
Loc

Narukila cordata var. lancifolia

Adans. 1763
1763