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1 Ehleringer, James R.Population- and family-level variation of brittlebush (Encelia farinosa, Asteraceae) pubescence: its relation to drought and implications for selection in variable environmentsBecause leaf pubescence of the desert shrub Encelia farinosa increases in response to drought and influences photosynthesis and transpiration, we hypothesized that differences in water availability across the range of this species may result in genetic differentiation for pubescence and associated p...Encelia farinose; Absorptance; Adaptation; Asteraceae; Desert; Drought acclimation; Leaf pubescence; maternal family variance; spatiotemporal heterogeneity2003
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