Fraga, Naomi .
Small flowered plants travel farther: the evolution of mating systems in Mimulus section Paradanthus (Phrymaceae).
Mimulus section Paradanthus (Phrymaceae) has a tremendous amount of floral diversity among a small number of closely related species. The section includes species that exhibit bicolored floral patterns, flower color polymorphisms, and variation in corolla size, degree of herkogamy, and nectar guide patterns. Twelve species included in the study have large showy flowers that are strongly zygomorphic, have complex nectar guide patterns, and are inferred to be primarily outcrossing. Four species included in the study are inferred to be primarily self-pollinating based on flowering time, flower size,flower duration, and dissection of buds that has revealed stigmas covered with pollen. These four putatively self-pollinating species (Mimulus androsaceus,M. sp. nov., M.rubellus, and M. suksdorfii) have relatively large range sizes when compared with the remaining taxa included in the study. In this study I expand previous sampling, and utilize sequences from nuclear ribosomal ITS and three non-coding regions from the chloroplast genome (petA-psbJ, psbD-trnT, rpl32-trnL) to examine the evolution of mating systems and its implication on range size for species inthe genus Mimulus.
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1 - Rancho Santa Ana Botanic Garden, Botany, 1500 North College Avenue, Claremont, California, 91711, USA
Presentation Type: Oral Paper:Papers for Sections
Location: Franklin A/Hyatt
Date: Tuesday, July 10th, 2012
Time: 8:30 AM