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PLANTS AND LIFE PROCESSES  
Alpine plant nutrition

Pulsatilla alpina ssp. apiifolia (Ranunculaceae)

 

The two subspecies of Pulsatilla alpina, P. a. ssp. alpina and P. a. ssp. apiifolia, are a classical example of vicarious taxa: The former occurs exclusively on calcareous, the later exclusively on siliceous rock. (2300 m, Swiss Alps)

 

Pulsatilla alpina 1 Pulsatilla alpina 2 Pulsatilla alpina 3 Pulsatilla alpina 4 Pulsatilla alpina 5 Pulsatilla alpina 6 Pulsatilla alpina 7 Pulsatilla alpina 8 Pulsatilla alpina 9 Pulsatilla alpina 10 Pulsatilla alpina 11 Pulsatilla alpina 12 Pulsatilla alpina 13
Captions: Close-ups of Pulsatilla alpina ssp. apiifolia
1.Flowering Pulsatilla alpina ssp. apiifolia in Vaccinium heath.
2.Stem pubescence.
3.Apium-like leaf (hence the scientific epithet apiifolia).
4.Leaf pubescence.
5.Lateral view of flower.
6.Top view of flower.
7.Gynoecium encircled by rings of stamina.
8.Cross section through gynoecium.
9.Lateral view of flower, tepals in front have been removed.
10.Lateral view of flower, all tepals have been removed.
11.Longitudinal section through flower.
12.Withered flower, styli start stretching.
13.Longitudinal section through withered flower.

 

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29 August 2011
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