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Family : Lentibulariaceae
Genus : Pinguicula
Name : Pinguicula rectifolia
Sub-classification (Casper) : link
Publication : Dr Franz Speta and Franz Fuchs in :
Phyton (Austria), Vol. 29, Fasc. 1, pages 93 -103, 1989.
"Drei neue Pinguicula-arten der sektion Orcheosanthus DC. aus Mexico"
DESCRIPTION : (by Dr Franz Speta and Franz Fuchs)
Plantae perennes. Rhizoma simplex brevis,j radicibus adventitiis numerosis filiformibus. Folia rosulae laxae hiemalis 30 - 45, lanceolata erecta, 3 – 4 cm longa, 1 -1.4 cm lata. Folia rosulae laxae aestivalis 15 – 20 late lanceolata, erecta, 6 – 7 cm longa, 2.7 – 3.7 cm lata, apice margo convolute. Hibernacula nulla. Florescentia IV – XI. Pedicelli 6 – 7, teretes, erecti, 14 – 16 cm longi, glanduloso-pilosi. Calyx dense glanduloso-pilosus, sepala 4 mm longa, 2 mm lata, inferiora 1.3 mm concrescentia. Corolla bilabiata, intus malvacea nervis maculisque purpureis, centrum viridi-album, extus subviolacea. Labium superius et labium inferius angulum 120° - 150° formans. Lobi truncati 15 -18 mm longi, 7 mm lati. Pili fauce simplices. Calcar ca. 3 cm longum, paucicurvatum, pilosum. Ovarium globosum, dense glandulosopilosum, stigma carnea ciliata incumbente. Ovula numerosa. Filamenta alba, thecae et pollen lutescentes. Capsula globosa, semina fusca, 0.9 mm longa, 0.24 mm lata.
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ORIGIN AND HISTORY :
Localisation / Map:
From Mexico, state of Oaxaca, district of Juxtlahuaca, Sierra Madre del Sur, Presa Morelos / Rio Balsas (ca. 98°10' / 17°20', NW Putla de Guerrero).
(click on the map for better location and relief map)
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.
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 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 :
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)