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The intergeneric hybrid grass “Poa labradorica”
Author(s) -
Cayouette Jacques,
Darbyshire Stephen J.
Publication year - 1993
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1993.tb00106.x
Subject(s) - biology , subarctic climate , taxon , ecology , habitat , arctic , key (lock) , botany
The new nothogenus × Dupoa (Dupontia × Poa ) is published. Nomenclature of the only known nothospecies, × Dupoa labradorica (= Poa labradorica ), is discussed. Morphology and synecology of this poorly known arctic and subarctic grass are described and a key to related taxa is given. Its morphology and ecology overlap with the putative parental taxa, Poa eminens and Dupontia fisheri ssp. psilosantha . Establishment and persistence of this sterile hybrid are related primarily to geological processes associated with glacio‐eustatic rebound and seasonal ice action affecting its seashore habitats.