Dominant Occurrence of Cleistogamous Flowers of Lamium amplexicaule in relation to the Nearby Presence of an Alien Congener L. purpureum (Lamiaceae)
Figure 2
Relations between the proportion of L. amplexicaule producing CH flowers and the frequency of L. purpureum in a patch (top) and the total number of Lamium plants (bottom) at the three sites: (a) Tsurumi, (b) Omi, and (c) Uchiko. Data collected from different years and dates are pooled for each study site, although the study dates and sites were incorporated as random effects in statistical analyses (see the text).
