INTERSPECIFIC HYBRIDIZATION IN LOBELIA L. SECTION LOBELIA

Abstract

The results of about 1400 pollinations that involved the 21 species of Lobelia L. sect. Lobelia are reported. The bispecific combinations that gave positive or negative results are recorded. Thirty-three different species combinations are represented in the artificial interspecific hybrid populations. Two of these hybrids have been reported by previous authors.Lobelia × rogersii hybr. nov. (L. brevifolia × L. puberula) is described. Numerous natural hybrid specimens were examined and the parentage was confirmed experimentally. Some plants of L. × rogersii were pollen-sterile; other plants were partly self-fertile.