Abronia: I. Distribution, Ecology and Habit of Nine Species of Abronia Found in California

Wilson, Ruth C.

doi:10.5642/aliso.19720704.07

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…5–10 cm above the substrate during flowering, stalks bend downward during fruit development so that ripe infructescences are laid onto the sand. Anthocarps are then released directly onto the sand (Wilson, 1972; K. E. Samis and C. G. Eckert, pers. obs.).…”

Section: Discussionmentioning

confidence: 99%

Increased seed dispersal potential towards geographic range limits in a Pacific coast dune plant

2008

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Summary• Dispersal may be favoured at geographic range edges by unstable population and metapopulation dynamics. However, dispersal may also evolve in response to geographic variation in other life-history traits, especially the mating system. Here, increased dispersal at range margins was tested for with a range-wide analysis of seed dispersal and mating system traits in Abronia umbellata, a plant endemic to Pacific coastal dunes of North America.• Seeds disperse within winged anthocarps. Anthocarps from 34 populations varied widely in wing size (mass-corrected wing index). Wing index correlated negatively with threshold wind velocity for dispersal in wind tunnel tests, suggesting that wings facilitate tumbling over open sandy substrate. As predicted, wing index increased and threshold velocity decreased towards both range limits.• Flower size, herkogamy and self-incompatibility declined towards range limits, indicating a shift to self-fertilization, and flower size and wing index correlated negatively. However, the increase in wing index towards range limits remained after statistically controlling flower size.• These results are consistent with selection favouring dispersal at range margins. The evolutionary lability of dispersal across the range may affect the interaction between selection and gene flow in the establishment and maintenance of geographic range limits.

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Section: Discussionmentioning

confidence: 99%

Increased seed dispersal potential towards geographic range limits in a Pacific coast dune plant

2008

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“…However, at least a couple of species of Abronia and Commicarpus have weakly succulent leaves (Bittrich & Kühn, 1993), and Wilson (1972) reports succulent tuberous roots in two species of Abronia. While the tuberous roots of Mirabilis jalapa do not appear overly succulent at first sight, their tissue is described as highly parenchymatic (Carlquist, 2004).…”

Section: No Tes O N Selec Ted Familiesmentioning

confidence: 99%

An up-to-date familial and suprafamilial classification of succulent plants

Nyffeler

Eggli²

2010

Bradleya

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“…Nesom (Phrymaceae) and Eschscholzia californica Cham. (Papaveraceae) (Wilson 1972;Lowry 2008;Baldwin et al 2012;Still and Potter 2013). Intraspecific phenotypic variation related to water availability can also be found at small spatial scales, with some excellent examples along vernal pools, on different soil types, and on different slope aspects (Linhart 1974;Lambrecht 2013;Dittmar and Schemske 2018).…”

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confidence: 99%

Phenotypic Variation in Seep Monkeyflowers Along a Fine-Scale Soil Moisture Gradient

Zell,

Yost,

Ritter

et al. 2024

Madroño

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Abronia: I. Distribution, Ecology and Habit of Nine Species of Abronia Found in California

Cited by 6 publications

References 4 publications

Increased seed dispersal potential towards geographic range limits in a Pacific coast dune plant

Increased seed dispersal potential towards geographic range limits in a Pacific coast dune plant

An up-to-date familial and suprafamilial classification of succulent plants

Phenotypic Variation in Seep Monkeyflowers Along a Fine-Scale Soil Moisture Gradient

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