Abstract
There were 15 species and two variants of wild Iris recorded in Liaoning Province, where is a primary distribution area of Iris in China. According to the division of distribution area for wild plants in Liaoning, twenty-eight sites were selected for investigating wild Iris resources in Liaoning. Distribution, habitat and main accompanying plants of each Iris species were recorded. Fifty-three accessions were collected during the investigation and introduced to suitable environment. Morphological characteristics of each accession were observed. According to previous literatures and specimens, all accessions were identified and classified into 12 species and two variants. The analytic hierarchy process (AHP) was used to perform a comprehensive assessment on the ornamental value of 11 Iris species. The results showed that Iris tigridia Bunge and Iris ensata Thunb. had better ornamental value than the other species. Some suggestions for revision and classification were discussed on several Iris species.
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