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Abstract
The New Zealand species of Wahlenbergia are revised from historical, morphological, and cytological evidence, and their relationships with Australian, Pacific, and Asian species are discussed. Wahlenbergia marginata is regarded as indigenous to Japan, W. gracilis as indigenous to New Caledonia, and W. dehiscens as indigenous to West Bengal. One indigenous and nine endemic species are recognised from New Zealand, of which three are described as new: W. akaroa, W. violacea, W. vernicosa. Five New Zealand endemic subspecies are described as new: W. albomarginata subsp. decora, W. albomarginata subsp. olivina, W. congesta subsp. haastii, W. pygmaea subsp. drucei, W. pygmaea subsp. tararua. Natural hybridism is discussed.
Keywords:
- Taxonomic revision
- Campanulaceae
- Wahlenbergia
- new species W. akaroa, W. violacea, W. vernicosa
- new subspecies W. albomarginata subsp. decora and subsp. olivina, W. congesta subsp. haastii, W. pygmaea subsp. drucei and subsp. tararua
- Australia
- Lord Howe Island
- New Zealand
- New Caledonia
- Japan
- West Bengal
- hybridism
