Panicum barbipulvinatum Nash, Mem.

Verloove, Filip & Ardenghi, Nicola M. G., 2015, New distributional records of non-native vascular plants in northern Italy, Natural History Sciences 2 (1), pp. 5-14 : 8-9

publication ID

https://doi.org/ 10.4081/nhs.2015.219

DOI

https://doi.org/10.5281/zenodo.12795560

persistent identifier

https://treatment.plazi.org/id/03C99007-5E79-0A4B-FCD4-FA1D837E3556

treatment provided by

Felipe

scientific name

Panicum barbipulvinatum Nash, Mem.
status

 

Panicum barbipulvinatum Nash, Mem. View in CoL New York Bot. Gard., 1: 21. 1900.

= P. riparium H.Scholz, Feddes Repert. , 113 (3-4): 275. 2002.

( Poaceae )

Naturalized neophyte new to the flora of Italy (Piemonte) ( Conti et al., 2005; Celesti-Grapow et al., 2009a).

ITALY. Piemonte. Prov. Alessandria: Valenza, river Po S of the bridge, sandy river bank, very common, 07.09.2014, F. Verloove 11060 ( BR); Prov. Alessandria: Arquata Scrivia, river Scrivia N of the bridge, gravelly river bed, frequent, 09.09.2014, F. Verloove 11062 ( BR) .

Panicum barbipulvinatum View in CoL is an enigmatic species originating in temperate North America. Its taxonomic status is debated: in its area of origin it is merely included in the variability of P. capillare View in CoL L. by modern authors (e.g. Freckmann & Lelong, 2003). In Europe, however, where only part of the genetic diversity of the latter is present, it is easily distinguished. This inspired Scholz (2002) to describe it as a neo-endemic species new to science, P. riparium View in CoL . Recently, Amarell (2013) demonstrated that Scholz’ new species in fact perfectly corresponds with the American P. barbipulvinatum View in CoL . Moreover, he advocated, like Scholz, that this taxon should be accepted at species rank (as is, for instance, P. hillmanii Chase View in CoL from the same species complex). His point of view was followed in the recently published Flora Gallica ( Tison & de Foucault, 2014).

Panicum barbipulvinatum View in CoL has a laxer inflorescence with spikelets on short pedicels that are tightly appressed. The narrower spikelets are long-acuminate at apex. This particular combination of features renders the plant a characteristic jizz that is fairly different from that of P. capillare View in CoL .

In September 2014 Panicum barbipulvinatum was seen on several occasions in Piemonte, always on exposed sandy or gravelly banks of rivers Po and Scrivia .

S

Department of Botany, Swedish Museum of Natural History

F

Field Museum of Natural History, Botany Department

BR

Embrapa Agrobiology Diazothrophic Microbial Culture Collection

N

Nanjing University

L

Nationaal Herbarium Nederland, Leiden University branch

Kingdom

Plantae

Phylum

Tracheophyta

Class

Liliopsida

Order

Poales

Family

Poaceae

Genus

Panicum

Loc

Panicum barbipulvinatum Nash, Mem.

Verloove, Filip & Ardenghi, Nicola M. G. 2015
2015
Loc

Panicum barbipulvinatum

Nash 1900: 21
1900
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