Pinguicula jaumavensis

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TAXONOMY:

Family : Lentibulariaceae

Genus : Pinguicula

Name : Pinguicula jaumavensis

Sub-classification (Casper) : link

Publication :  P. Debbert, in Mitt.Bot.Staatss.Muenchen 30:379 (1991), "Einige neue arten der gattungen Drosera (Droseraceae) und Pinguicula (Lentibulariaceea)".

DESCRIPTION : (by P. Debbert)

Plantae perennes, rosulatae. Radices 7 – 10, albae, 1.5 – 2.5 cm longae, basi 1 mm crassi, apicem versus attenuatae. Folia temporis aridi 35 – 40, cuneata, distincte succulenta, apice rotundata, plana, basin versus acuminata, ca. 8 mm longa et 2 – 3 mm lata, eglandulosa vel parce glandulosa, saepissime supra pilis minutis albis obtecta. Folia temporis pluvialis non succulenta, quam foliis temporis aridis duplo latiora apice recurva, et dense tentaculata, tentaculis albis glandula rubra provisis. Pedunculi 2 -3, 6 – 11 cm longi et basi 1 – 2mm crassi, apicem versus attenuati et ca. 1.2 mm longa et 1 mm lata, extus dense glandulosa. Petala 5, dilute coerulea, basi 3 mm lata et apicem versus ca. 5 mm lata, petala inferiores laterales ca. 6 mm longa et 3 mm lata, petalum medianum basi 3.5 mm lata et apicem versus ca. 6 mm latum, propre initium calcaris macula flava provisum; calcar 4 – 6 mm longum et 1 mm crassum, leviter curvatum. Ovarium dilute viride, 1.5 – 2 mm latum. Stigma bilobatum, intense violaceum.

 

translation :

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ORIGIN AND HISTORY :

Pinguicula jaumavensis is closely related to Pinguicula esseriana

Localisation / Map: 

From Mexico, Jaumave in Tamaulipas state.

 

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

HABITAT:  

According to the publication : in the vertical cracks of feldspath (alumino-silicate rock of sodium, potassium or calcium, that are constituent of igneous rocks and volcaniques or on small overhangs near Jaumave, Mexico. 

TEMPERATURE and PRECIPITATIONS :

Click on the graph to enlarge and see the graph of normal precipitation and normal average temperatures. Normal values are 30-year averages for the period 1961 to 1990. The weather stations are grouped by region (see map of weather stations).

Introduction in culture :

 No data. My clone comes from the carnivorous plants nursery of ‘A. Wistuba’, Germany.

 

Andreas Fleischmann (Germany), in CPUK Forum on 22 Feb 2005 wrote " I think there are actually 2 forms of P. jaumavensis that are very different relating to flower colour (especially the colour of the mark), shape and size of the lobes and lenght and shape of the spur. I got both of them from Paul Debbert directly, who is the author of this species, thus they should really be identified well.
The one are the plants he used for his type description, thus I refer to this as "P. jaumavensis type-form" (the type location is somewhere in the Jaumave region, Mexico, no further information is given in the protologue). These plants are identical (judging by your photographs) to your 'La Melara' form. The other one (your form from 'Cardonal') he collected at a different location, and he admitted that it is somewhat different from the type P. jaumavensis but should be treated as local variant."

CULTURE AND MULTIPLICATION : 

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

Life cycle : The life cycle observed in culture for this Pinguicula consists of two seasons, one wet and the other dry (see link). The plant forms different leaf rosettes according to the season. During the resting months (winter) the small succulent rosette is composed of numerous non-carnivorous leaves. The carnivorous leaves are produced in spring and during all summer. The flowering occurs twice in the year (in summer and in winter). The life cycle of the plant is probably similar in it's native habitat but I have no data.

 

Media : I use a 100 % mineral media : 2 perlite, 2 vermiculite, 1 small sand (for aquarium), 1 fine white sand, 1 pouzzolane (volcanic lava), 1 aqualit (expansed ceramic for aquarium). The aqualit can be replaced by 1 of pouzzolane. Plants in this media grow slower but have a stronger root system.

 

Pot : plastic, colour terracotta, diameter 20cm, height 12cm for forming a colony.

 

Cultivation : I think that a slightly airy situation inside the greenhouse is important to avoid air stagnation. For this reason, I use a fan 24h/24h all the year round.

Watering is very important : from May to September (summer). I let the media drying slightly between two watering. I use rain water poured on the top of the pot taking care not to wet the rosette.  From October to April, It is important to let the media drying completely (no watering) but with an atmospheric humidity of about 80%. 

The mentioned months are indicative and can change according to your own growing conditions. In fact, when this Pinguicula begins to produce its non-carnivorous leaves, you have to stop watering and let the pot drying out completely. Inversely, when the plant begins to produce in early spring its carnivorous leaves, you have to progressively start watering again the pot.

Temperatures : during growth period, day temperatures are about 25°C but may reach 35°C when the sun is shining on the greenhouse in spite of the use of shading covers. Night temperatures are around 20°C. During resting period : day/night over freezing point. Lower temperature observed : - 4°C. I use an electronic petroleum heater to provide heat.  

Flowering period : July 2001.

Multiplication : I have never succeeded in pollinating the flowers of this Pinguicula (needs two different clones ?) . So I don't know the seeds. The plants can be propagated  easily using non-carnivorous leaves separated from the rosette  at the end of winter. You only have to carefully tear out the totality of the leaf including the white base as the plantlets will sprout from this area. Summer leaves can be used too.

 PICTURES: (click to enlarge)