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High and Dry: Drought Stress, Sex‐Allocation Trade‐offs, and Selection on Flower Size in the Alpine Wildflower Polemonium viscosum (Polemoniaceae)
  • C. Galen
  • Biology, Medicine
  • The American Naturalist
  • 1 July 2000
TLDR
It is concluded that under drought the demographic cost of producing large flowers is gender dependent, such that viability selection favors either small‐flowered plants with female‐biased reproduction or larger‐flowers plants with male‐ biased reproduction. Expand
Drought stress, plant water status, and floral trait expression in fireweed, Epilobium angustifolium (Onagraceae).
TLDR
Traits influencing floral attractiveness to pollinators in E. angustifolium vary with plant water status, such that pollinator-mediated selection could indirectly target physiological or biochemical controls on ψ(l), according to the best-fit path models. Expand
The functional ecology of variation in flower size and form within natural plant populations
over their lifetimes he remarkable diversity of flowers has a profound impact on humankind. Flower diversity inspires masterpieces of art and literature, fuels highway beautification schemes, givesExpand
MEASURING POLLINATOR‐MEDIATED SELECTION ON MORPHOMETRIC FLORAL TRAITS: BUMBLEBEES AND THE ALPINE SKY PILOT, POLEMONIUM VISCOSUM
  • C. Galen
  • Biology, Medicine
  • Evolution; international journal of organic…
  • 1 July 1989
TLDR
The hypothesis that pollinator‐mediated selection can bring about changes in floral form, and can explain shifts in floral morphology of P. viscosum along natural habitat gradients, is supported. Expand
DOWN THE TUBE: POLLINATORS, PREDATORS, AND THE EVOLUTION OF FLOWER SHAPE IN THE ALPINE SKYPILOT, POLEMONIUM VISCOSUM
  • C. Galen, J. Cuba
  • Biology, Medicine
  • Evolution; international journal of organic…
  • 1 October 2001
TLDR
A fitness model incorporating data predicts that in the absence of the genetic correlation between corolla length and flare, intermittent selection for defense could allow tubular flowers to spread in the krummholz population, however, in the tundra, where bumblebees account for nearly all pollination, the model predicts that tubular Flowers should always confer a fitness disadvantage. Expand
Are flowers physiological sinks or faucets? Costs and correlates of water use by flowers of Polemonium viscosum
TLDR
Findings suggest that more water may be required to maintain turgor in large corollas in part because their tissues have lower cell wall densities, which could exacerbate the cost of reproduction under dry conditions. Expand
RESPONSES OF SNOWBED PLANT SPECIES TO CHANGES IN GROWING-SEASON LENGTH'
TLDR
The results suggest that interspecific differences in growth phenology of coexisting species will promote shifts in snowbed plant communities with climate change within generations, and differences in developmental phenology better predicted species-specific responses to snowmelt schedule than distributional affinities. Expand
It Never Rains but then it Pours: The Diverse Effects of Water on Flower Integrity and Function
TLDR
The chapter proposes that floral traits may be targets of selection through parental environmental effects if they moderate the amount of water in the floral micro-environment or optimize the use of that water for temperature control. Expand
Interspecific pollen transfer as a mechanism of competition: Consequences of foreign pollen contamination for seed set in the alpine wildflower, Polemonium viscosum
TLDR
It is suggested that pollinator infidelity in high alpine plant communities can reduce female reproductive success of P. viscosum by inhibiting the performance of conspecific pollen grains in flowers receiving foreign pollen. Expand
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