Pinguicula grandiflora f. pallida

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TAXONOMY:

Family : Lentibulariaceae

Genus : Pinguicula

Name : Pinguicula grandiflora f. pallida

Sub-classification (Casper) : link

Publication : Casper in Repert. Spec. nov. 66 (1962) 85

DESCRIPTION :  (In Casper)

 

(See description of Pinguicula grandiflora)

 

Corolla pallide violacea; calcar cylindricum crassum obtusum.

 

Chromosomata 2n=32

 

Translation :

 

- soon - 

ORIGIN AND HISTORY :

This forma can be found growing among normal Pinguicula grandiflora populations in the Jura mountains. Jurg Steiger mentions that this pale form is likely to be a mutation (but not an albino sensu strictu) which obviously has some positive and consistent selection features as it is recorded regularly since 1828.  I have visited a site in Jura too, where you could find exclusively f. pallida specimens !

Jurg Steiger add that the pale specimens often have a somewhat thicker spur, giving evidence that the genetic alteration leading to the color mutation might be polyphenotypical. 

Localisation / Map: 

This forma can be found in the Jura mountains in France and switzerland. 

 

I have visited plants from the following sites :

- Col de la Faucille,

- Lajoux, 

- Mijoux,

- Cret de la neige (above Lelex)

 

(click on the map for better location and relief map)

HABITAT: 

Same habitat as Pinguicula grandiflora. On half shady calcareous and loamy slopes. 

Introduction in culture :

No data, my plants comes from seeds labelled from the place described below.

CULTURE AND MULTIPLICATION : 

(North hemisphere, France near Paris, in a garden  - see the map -)    

 

Life cycle :In spring, the cycle begins by the opening of the winter buds and the production of the first carnivorous leaves. The first leaves are followed by the flowers in summer. New carnivorous leaves are produced during all the season. Near autumn, or earlier, if your conditions are not optimal, the next hibernacula is revealed in the centre of the rosette. Then leaf production stops and the old leaves decay slowly. The plant (reduced now to a small hibernacula) is ready for winter and for the next cycle. 

Media: I use a 100 % mineral media : 2 perlite, 2 vermiculite, 1 small sand (for aquarium), 1 fine white sand, 1 pouzzolane (volcanic lava), 2 marly calcareous detritus. 

Pot : In small box, with direct sun for 5 hours per day.

Cultivation : The long term cultivation of temperate Pinguicula is difficult : If the summer growing conditions are not optimal, the plants will form very weak hibernacula which easily rot. 

Optimal summer growing conditions are : good air humidity, cool temperature and UV lights.

 

Multiplication : By seeds or using the gemmae produced in great number around winter hibernacula.

 PICTURES: (click to enlarge)