caa a22 4500 475806379 CHVBK 20180406123748.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/BF00985280 doi (NATIONALLICENCE)springer-10.1007/BF00985280 Heterostyly in the Lamiaceae: The case of Salvia brandegeei [Elektronische Daten] [S. Barrett, D. Wilken, W. Cole] Heterostyly rarely occurs in families with strongly zygomorphic flowers. For this reason Darwin (1877) doubted whether heterostyly would occur in the Lamiaceae and recent reviews have not reported the floral polymorphism in this family. Here we describe distyly in a rare species ofSalvia restricted to bluffs and seaward canyons on Santa Rosa Island (Santa Barbara Co., California) and northwestern Baja California (Mexico).Salvia brandegeei is morphologically distylous with populations composed of equal frequencies of long-and short-styled morphs differing reciprocally in stigma and anther position. Controlled hand pollinations demonstrated no significant differences in the seed set of self, intramorph or intermorph pollinations. Unlike most heterostylous species investigated,S. brandegeei does not possess diallelic incompatibility or ancillary polymorphisms of pollen and stigmas. We propose that the evolution of distyly inS. brandegeei may have been associated with an ecological shift to a new environment in which protandry failed to prevent increased levels of geitonogamy. Heterostyly was then selected because it increased the proficiency of cross-pollination. The origin of distyly in self-compatibleS. brandegeei is consistent with Lloyd and Webb's theoretical model for the evolution of distyly. Springer-Verlag, 2000 Heterostyly nationallicence distyly nationallicence zygomorphic flowers nationallicence self-compatibility nationallicence protandry nationallicence geitonogamy nationallicence Lamiaceae nationallicence rare plant species nationallicence Barrett S. Department of Botany, University of Toronto, 25 Willcocks Street, M5S 3B2, Toronto, Ontario, Canada aut Wilken D. Santa Barbara Botanic Garden, 1212 Mission Canyon Road, 93105, Santa Barbara, California, USA aut Cole W. Department of Botany, University of Toronto, 25 Willcocks Street, M5S 3B2, Toronto, Ontario, Canada aut Plant Systematics and Evolution Springer-Verlag 223/3-4(2000-09-01), 211-219 0378-2697 223:3-4<211 2000 223 606 https://doi.org/10.1007/BF00985280 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00985280 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barrett S. Department of Botany, University of Toronto, 25 Willcocks Street, M5S 3B2, Toronto, Ontario, Canada aut NATIONALLICENCE 700 1- Wilken D. Santa Barbara Botanic Garden, 1212 Mission Canyon Road, 93105, Santa Barbara, California, USA aut NATIONALLICENCE 700 1- Cole W. Department of Botany, University of Toronto, 25 Willcocks Street, M5S 3B2, Toronto, Ontario, Canada aut NATIONALLICENCE 773 0- Plant Systematics and Evolution Springer-Verlag 223/3-4(2000-09-01), 211-219 0378-2697 223:3-4<211 2000 223 606 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer