Overview

Comprehensive Description

Description

Annual or perennial herbs. Stipules 0. Leaves alternate, opposite or whorled. Flowers actinomorphic, rarely zygomorphic, bisexual. Calyx gamosepalous, (4-)5(-9)-partite. Corolla gamopetalous, rotate to campanulate with a 4-9-lobed limb. Stamens equalling corolla lobes, sometimes alternating with staminodes. Ovary semi-inferior (Samolus) or superior (other genera) or 1-locular; ovules 2-3 or more, usually many. Fruit a capsule.
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© Mark Hyde, Bart Wursten and Petra Ballings

Source: Flora of Zimbabwe

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Evolution and Systematics

Functional Adaptations

Functional adaptation

Flowers accommodate short growing season: alpine snowbell
 

Flowers of the alpine snowbell flourish during a short growing season by forming buds in late summer and keeping them dormant through the cold winter.

     
  "Farther south, in Europe, the severities of the Arctic are only equalled on high mountains…Close to the edge of permanent snow, this growing period may be very brief indeed. The snow may have taken so long to melt that the sun has already passed its summer peak before the rocky cliffs are exposed and there is moisture to be extracted from the gritty ground…This is where the alpine snowbell grows. Because growing time is so short, it has to be prepared to take immediate advantage of the first thaw. Accordingly, it has, ready and waiting, flower buds that were developed at the end of the previous short summer. Throughout the winter they have remained dormant, protected by the blanket of snow above. In spring, even before the snow melts, the glimmer of slightly brighter light, filtering through the white blanket above, triggers the plant into activity. The dark surface of the flower-buds absorbs the heat of such sunlight that manages to filter down to them and this speeds the melting of the snow. As moisture from the sun-warmed surface of the snow begins to trickle into the ground, the little snowbells suddenly appear in the sunshine, each sitting in the centre of its own dimple in the snow-field." (Attenborough 1995:251-252)
  Learn more about this functional adaptation.
  • Attenborough, D. 1995. The Private Life of Plants: A Natural History of Plant Behavior. London: BBC Books. 320 p.
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© The Biomimicry Institute

Source: AskNature

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
Specimen Records: 2266
Specimens with Sequences: 2950
Specimens with Barcodes: 1856
Species: 420
Species With Barcodes: 280
Public Records: 878
Public Species: 153
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Primulaceae

Primulaceae!<-- This template has to be "warmed up" before it can be used, for some reason -->

Primulaceae is a family of flowering plants with about 24 genera, including some favorite garden plants and wildflowers. It is also known as the primrose family.

Contents

Genera

Genera included in Myrsinaceae

The following genera, traditionally included in Primulaceae, should, according to Källersjö et al. (2000), belong to the family Myrsinaceae:

References

Källersjö, M., G. Bergqvist & A. A. Anderberg. 2000. Generic realignment in primuloid families of the Ericales s. l.: a phylogenetic analysis based on DNA sequences from three chloroplast genes and morphology. Amer. J. Bot. 87: 1325–1341.

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