Some morphological characters of corolla of Veronica (Scrophulariaceae) species and their taxonomic value

摘要

Some morphological characters of corolla of 51 species of Veronica and several representatives of other genera from the tribe Veroniceae were examined. These are the ratio of the corolla tube length to the corolla length on the corolla adaxial side,the pubescence of the corolla tube inner part, the number of bundles coming into the base of the corolla tube. Possible relationships between some annual Veronica species are suggested. The corolla like that of V. grandiflora, with the short glabrous tube and the 5 bundles coming into its base, is the most primitive in Veronica.