Pinguicula cyclosecta

Pinguicula cyclosecta

TAXONOMY:

Family : Lentibulariaceae

Genus : Pinguicula

Name : Pinguicula cyclosecta

Sub-classification (Casper) : link

Publication :

Casper in Feddes Repertorium Specierum Novarum Regni Vegetabilis 67(1-3): 11-12. 1963.

{Feddes Repert. Spec. Nov. Regni Veg. ; BPH 369.02}

DESCRIPTION : (by Casper)

Perennis. Rhizoma simplex breve radicibus filiformibus adventitiis numerosis. Folia numerosa (-25) radicalia +/- dense rosulata biformia integerrima; inferiora (rosula hiemis ut dicitur) obovato-spathulata longe petiolata basin versus pilis longis ciliata vix involuta (3) 5 - 10 (12) mm longa 0.75 - 2.5 mm lata; superiora (rosula aestatis ut dicitur) obovato-spathulata margine basin versus pilis longis ciliata parum involuta, superne glandulis sessilibus dense et glandulis stipitatis modice dense vestita (15) 20 - 30 (35) mm longa 5 - 12 mm lata virentia. Hibernacula nulla. Pedicelli 1 - 3 erecti glandulis stipitati disperse obsiti 30 - 50 mm alti uniflori. Flores magni 25 - 35 mm longi (calcari incluso). Calyx bilabiatus extus glandulis stipitatis obsitus viridis; labium superum profunde trilobum lobis oblongo-lanceolatis 2 mm longis; labium inferum usque ad 1/2 - 2/3 longitudinis bilobum lobis lanceolatis vel oblongis acutiusculis 0.5 - 0.8 mm longis. Corolla ringens profunde bilabiata intense violacea (in sicco albida) extus glandulis stipitatis disperse obsita; labium superum bilobum lobis suborbiculatis vel obovato-rotundatis; labium inferum duplo maius trilobum lobis suborbiculatis inter se tegentibus inaequalibus intermedio lateralibus maiore. Tubus brevissimus late infundibuliformis sine palato intus pilosus pilis cylindrico subulatis. Calcar subulatum acuminatum subrectum vel incurvatum 15 - 22 mm longum tubum limbumque corollae subduplo superans. Stamina 2 mm longa; pollen (5) 6 - 7 (8) colporatum. Ovarium subglobsum glandulis stipitatis disperse obsitum. stigma bilabiatum labio infero maximo. Capsula subglobosa calycem subaequans. Semina scobiformia.

Chromosomata ignota.

translation :

- Soon -

ORIGIN AND HISTORY :

- soon -

Localisation / Map:

Mexico, Nuevo Leon

Coordinates: 24N 100W

Collector(s): F.G. Meyer & D.J. Rogers

Collection number: 2538

Collection date: 17 Jun 1948

HABITAT:

According to IPSG, Newsletter N° 6, april 1995, "Here at last : Pinguicula cyclosecta" by Johan Van Marm, the habitat "is a north facing, vertical limestone wall rising above Abies/oak woodland. The air is cool and windy. The rosettes are found growing on small carpets of moss, with selaginella and ferns, or in small crevices and ledges in the shade beneath Agave and Hechtia. Here, the rock is bare except for the covering of the dried remains of the previous summer leaves". "The wall was clothed with fierce Agaves and Hechtias which offered the only hand hold, helping us to get a closer look. Here, I saw several small blue-green rosettes, they looked so unusual; Then I suddently realised here at last was Pinguicula cyclosecta".

TEMPERATURE and PRECIPITATIONS :

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

Nuevo-leon v

Introduction in culture :

No data. I bought my plant in A. Wistuba's carnivorous plants nursery.

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 from summer rosette. 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 succeeded in pollinating the flowers of this Pinguicula once. 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.

PICTURES: (click to enlarge)

Summer rosette of Pinguicula cyclosecta with flower bulb in the center.

Photo : Eric Partrat

- October 2000 -

Winter rosette of Pinguicula cyclosecta.

Photo : Eric Partrat

- November 1998 -

Rear view of the flower of Pinguicula cyclosecta. Note the veined white corolla.

Photo : Eric Partrat

- November 2002 -

Pinguicula cyclosecta flowering, note the long spurs.

Photo : Serge Mallet

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Summer rosette of Pinguicula cyclosecta, note the nice color of the leaves.

Photo : Serge Mallet

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Close-up of the flower of Pinguicula cyclosecta and the typical form of its corolla lobes.

Photo : Serge Mallet

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Impressive cluster of flowers of Pinguicula cyclosecta.

Photo : Jan FLisek

www.bestcarnivrousplants.com

Close up of the flower of Pinguicula cyclosecta.

Photo : Jan FLisek

www.bestcarnivrousplants.com

A pale flower of Pinguicula cyclosecta, collected by the Yucca Do nursery and spread among amateurs under the name '1715'. The full code is : ABG 97-1715 Yucca Do 60-45-031395B. ABG means Atlanta Botanical
Gardens.

Photo : Travis Wyman

- 2003 -

According to the description of Johan Van Marm, this cliff, north facing in Mexico shaded at right, could be similar to the habitat of Pinguicula cyclosecta except that there is no Abies and oak woodland at the bottom.

Selaginella sp. and Mosses

This image in its original context, on the page :

selaginella_sp.html

^ Hechtia sp. and Agave sp. >

Can you imagine using Agaves and Hechtias as the only hand hold to see closer Pinguicula cyclosecta ?

Pinguicula cyclosecta in habitat.

Photo : Alfred Lau

Pinguicula cyclosecta in habitat.

Photo : Alfred Lau