An annotated key to the species of Gastridium (Poaceae) with distributional novelties to the Italian territory

  • Anna Scoppola | scoppola@unitus.it Department of Agriculture and Forestry Sciences (DAFNE), Tuscia University, Viterbo, Italy.

Abstract

Gastridium is a Mediterranean-paleotropical genus of the Poaceae family, native to Italy. Species number and diversity were imperfectly known until recent taxonomic updates on morphological and molecular basis that enhanced our knowledge of this taxon. The present contribution provides a complete key of the genus, encompassing the four currently known closely related species, G. lainzii, G. phleoides, G. scabrum, and G. ventricosum. The essential features of panicle, spikelets, and florets are specified and briefly discussed. Revisions of ancient and recent herbarium specimens provided three Italian distributional novelties for G. phleoides concerning Liguria, Campania, and Puglia and two for G. scabrum concerning Liguria and Basilicata. In contrast, the distributional ranges of G. scabrum and G. lainzii in the W Mediterranean region remain poorly known and await further investigations.

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Published
2019-11-04
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Keywords:
Gastridium, identification key, Italy, new records, Spain, taxonomic characters
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How to Cite
Scoppola, A. (2019). An annotated key to the species of Gastridium (Poaceae) with distributional novelties to the Italian territory. Natural History Sciences, 6(2). https://doi.org/10.4081/nhs.2019.429