Work

Spontaneous hybridization among invasive Poaceae in Hawai‘i: Chloris × pseudosagrana nothosp. nov. and Cenchrus × peregrinus nothosp. nov.

Year: 2024

Type: article

Abstract: During grass surveys across the islands of Hawai‘i in 2022, two novel hybrids among non-native Poaceae were found growing on roadsides. Spontaneous hybridization was observed among Chloris barbata and C. divaricata on O‘ahu and among Cenchrus clandestinus and C. setaceus on Hawai‘i island. Morphological evidence initially suggested these plants may be hybrids and molecular analysis using the ITS and rpl32-trnL regions confirmed that the plants are hybrids and identified their parentage. These hybrids are named Chloris × pseudosagrana nothosp. nov. and Cenchrus × peregrinus nothosp. nov. No developed seeds could be found on either of these hybrids and they are suspected to be sterile F1 hybrids. The occurrence of hybridization events among other non-native species are also discussed.

Source: Phytotaxa

DOI: 10.11646/phytotaxa.638.2.4

Authors: KEVIN FACCENDA, MITSUKO YORKSTON, MICHAEL C. ROSS, CLIFFORD W. MORDEN

Institutions: University of Hawaiʻi at Mānoa, Kapiolani Community College

Language: English

Topic: Plant Taxonomy and Phylogenetics

Subfield: Ecology, Evolution, Behavior and Systematics

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: bronze

Funders: University of Hawai'i, U.S. Geological Survey, University of Hawai'i at Mānoa

Award: G8103785584