• Issue
    Volume 35, Issue 2
    109-161
    April 2020

ISSUE INFORMATION

Free Access

Issue Information

  • Pages: 109-111
  • First Published: April 2020
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Cover Image

Tulipa pumila. This photo was taken by Sandro Pratesi at Doccino at the municipality of Riparbella, province of Pisa, Tuscany, Italy (DOI: 10.1111/1442-1984.12267).

ORIGINAL ARTICLES

Differences in sex expression and mating systems in three pollination morphs of Cimicifuga simplex

  • Pages: 112-119
  • First Published: 15 January 2020
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Cimicifuga simplex (Ranunculaceae) has three genetically distinct pollination morphs. Here, we report that each of the three pollination morphs of C. simplex differs from the others with regard to sex expression and mating system: morph I consists mostly of ramets with hermaphroditic flowers and ramets with only female flowers, morph II consists of ramets with hermaphroditic flowers and ramets with hermaphroditic and male flowers, and morph III consists mostly of ramets with hermaphroditic flowers.

Open Access

Safeguarding the rare woodland species Gagea spathacea: Understanding habitat requirements is not sufficient

  • Pages: 120-129
  • First Published: 29 January 2020
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Gagea spathacea is a globally rare spring geophyte, which mainly occurs in deciduous forests of northern Central Europe. Here, we provide scientific-based insight into the autecology of this species of special conservation interest. Our results emphasize the need to understand how habitat continuity and abiotic determinants of habitat integrity interactively affect the fitness of G. spathacea.

Male flowers in Tulipa pumila Moench (Liliaceae) potentially originate from gender diphasy

  • Pages: 130-137
  • First Published: 22 January 2020
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The presence of male individuals in a population of Tulipa pumila from Italy is probably due to gender diphasy.

Gender specialization and factors affecting fruit set of the wind-pollinated heterodichogamous Juglans regia

  • Pages: 138-146
  • First Published: 14 February 2020
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Gender specialization and factors affecting fruit set of the wind-pollinated heterodichogamous Juglans regia were studied. Four flowering morphs (i.e., protandrous, protogynous, male and female) were observed. The sexual function of protandrous morphs was more male biased. Fruit set depended on plant size only for protandrous morphs and increased with flowering synchrony.

Natural hybridization and introgression of Abies firma and Abies homolepis along the altitudinal gradient and genetic insights into the origin of Abies umbellata

  • Pages: 147-157
  • First Published: 02 March 2020
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We examined natural hybridization and introgression of Abies firma and A. homolepis along the altitudinal gradient in two sites using 13 nuclear microsatellites and a species-specific chloroplast DNA marker and examined morphologies of shoots and cone scales. In addition, we unveiled the origin of A. umbellata, an unknown taxon found where the vertical distributions of the two fir species overlap.

NOTES AND COMMENT

The effect of samara wing presence on predation of Acer pseudoplatanus (Sapindaceae) seeds on the ground

  • Pages: 158-161
  • First Published: 22 January 2020
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We explored whether the presence of this wing in Acer pseudoplatanus either deters or promotes predation after dispersal, either by increasing the time and energy required to predate the seed or by increasing the seed's visibility to predators. We found that wing-removed fruits were preferred, suggesting that samara presence makes seed handling more expensive for granivores. We conclude that the presence of the wing may offer an anti-predatory benefit as well as aiding primary dispersal.