Siggi_Hartmeyer

Full Members
  • Posts

    240
  • Joined

  • Last visited

  • Days Won

    19

Siggi_Hartmeyer last won the day on April 5

Siggi_Hartmeyer had the most liked content!

Contact Methods

  • Website URL
    http://www.hartmeyer.de
  • ICQ
    0

Profile Information

  • Gender
    Male
  • Location
    Weil am Rhein - Germany
  • Interests
    Our CP collection and private CP-video production

Recent Profile Visitors

4,616 profile views

Siggi_Hartmeyer's Achievements

49

Reputation

  1. Greenhouse Nepenthes Part 3 (English subtitles provided) This time we show a special hybrid, Nepenthes eymae x clipeata, which we received as a small seedling from Paul Debbert in 1991. In the meantime it became a flowering female with many active pitchers on the long shoots. Adventurous is the story of our N. mirabilis "Cairns", which developed splendidly since 1995. For this we make a short excursion to its natural habitat in Queensland, Australia. Our N. ramispina forms plenty of pitchers as well as the N. rafflesiana var. alata, already presented in the 2nd part of our Nepenthes series, which developed into a real feast for the eyes with currently 22 active upper pitchers. Enjoy!
  2. Nepenthes talangensis x lowii, a beautiful hybrid made in Weil am Rhein.
  3. Cold House Carnivorous Plants Flowering Today we visit the carnivorous plants in our cold house, where magnificent sundews are currently blooming, which have been growing here for 20 years. An impenetrable tangle of glue traps, glowing in the sun, is formed by the Australian Drosera planchonii. With particularly splendid blooms inspires the South African Drosera cistiflora as well as the Tibet orchid, Pleione formosana and our Drosophyllum developed quite worth seeing over the years. The current generation had sown itself in spring 2019 here in the cold house without our assistance in a pot with the American butterwort Pinguicula planifolia. Even after two years, dewy pine and butterwort are thriving perfectly together, and in the meantime sundew and bladderwort have joined them on their own. Enjoy!
  4. You are welcome, the seeds came from our Veitchii female, pollinated and harvested at our greenhouse in 2016. So the plant in the video is about five years old. They grew slowly because I rarely gave any fertilizer. Haha, large Neps will soon need much place . Edwardsiana pollen came from a friend. This is our mother plant N. veitchii "Highland" in 2014. Meanwhile the source of even more hybrids like N. veitchii x bicalcarata (still quite small):
  5. NEPENTHES 4 CUTTINGS This time we are looking in our greenhouse for pitcher plants (Nepenthes), for which because of their attractive pitchers we often get requests for cuttings from you. First of all, there is Nepenthes rafflesiana var. alata, which is much sought after because of the striking frills on its lower pitchers, and which also forms quite large upper pitchers. Similarly often asked for is N. ventricosa "Porcelain", which as the name suggests is popular because of its porcelain look lower pitchers. Before we take a look at our most popular hybrid N. veitchii x edwardsiana, we will show you the development of the seed pods of our N. bicalcarata female, of which at least a few are starting to swell after the pollination end of December. Unfortunately, no more cuttings can be pre-ordered at the moment, the demand was simply too great. Enjoy!
  6. Trichome or tentacle? The active traps of Byblis and Drosera. Both the Australian rainbow plants (Byblis) as well as the sundews (Drosera) catch their prey with active, that means moving sticky traps. Nevertheless, there are serious differences between the two carnivorous genera, which we show in this short film with exciting microscope and time-lapse shots. It is explained in an easily understandable way, why the adhesive traps of the Byblis consist of hairs and those of the Drosera of tentacles. Good entertainment (English subtitles provided)!
  7. A successful and especially healthy 2021 to all of you! Today we are of course especially happy about the entry of "our" Diva into the Guinnes World Records 2021. The photo also shows the important players: On the top left the photo of Richard Davion, who was the first to report about the fast catapults. The right photo shows Dr. Simon Poppinga, group leader in the Plant Biomechanics Group at the University of Freiburg, who, in collaboration with the Hartmeyers, measured the fabulous 75 ms for a capture with a high-speed camera and coined the name catapult-flypaper trap. While exchanging data with a colleague, the latter was so impressed that he submitted the "Diva" and the Bladderworts to Guinness as a record-breaker ... and this was accepted. A great story.
  8. Pollinating Nepenthes bicalcarata: A couple of the large pitcher plant Nepenthes bicalcarata grows in a pot in our greenhouse and even flowers simultaneously. This film shows how we pollinate the dioecious plant. Enjoy the film (English subtitles provided)!
  9. New in Guinness World Records 2021 The catapult flypaper trap Drosera glanduligera has now been included in the Guinness World Records 2021 as the fastest terrestrial predatory plant. It is actually faster than the VFT. Together with Dr. Simon Poppinga and the team of the Plant Biomechanics Group of the University of Freiburg, Irmgard and I are very happy about this great success of our common research work on the "Diva" (catapult-flypaper trap published 2012 in Plos One). Simon and the participating authors are additionally pleased, because based on the results of their experiments, the genus Utricularia (using U. australis as an example) was recorded too as the fastest aquatic predatory plant. We would like to take this opportunity to thank particulary Richard Davion (Adelaide, AUS) who was the first who reported about it, and all those who have supported us over the years in the research of snap-tentacles! If you want to see the experimental plants examined at the University of Freiburg in action, I recommend our topic "Carnivorous Plant Speed Contest":
  10. Mantis vs. Sceliphron on Nepenthes bicalcarata. The digger wasp Sceliphron caementarium captures spiders for its brood, so it is quite fortified; however, the adult wasps feed on vegetarian food. These wasps are quite crazy about the nectar on our N. bicalcarata couple. A couple of spontaneously intruded praying mantises lurks from their branches below our greenhouse roof, which inevitably leads to an encounter of the predatory insects. Who is going to become the booty? Here the shreds fly: Exciting pictures from our CP-greenhouse with extra spooky soundtrack. Enjoy!
  11. Welcome to our carnivorous plant speed contest! Four carnivorous genera qualified for our speed contest and they all give their best. Is Aldrovanda able to keep up even against the water resistance? How well does the famous Venus flytrap? Does the sundew that is usually regarded quite sedate have a chance at all in this competition? And what's the story with the southern bladderwort? Examined in detail with the help of time lapse as well as slow motion shots. English subtitles provided, enjoy! Special thanks go to Dr. Simon Poppinga and his team of the Plant Biomechanics Group of the University Freiburg as well as to Dr. Jan Schlauer for his kind support.
  12. Sarracenia leucophylla: Attention Bee Trap (English subtitles) With its shiningly white patterned leaves Sarracenia leucophylla is certainly one of the most distinctive pitcher plants. We observed the impact of this large carnivore's attractivity to insects in the surroundings quite coincidentally in summer 2019. Suddenly, a whole ant colony had vanished that we observed for weeks in the frame of experiments with Venus flytraps. Looking for the reason, we did not only find the missing ants. Thereby, we unfortunately also found many dead honey bees. We kept an eye on this during the season, which confirmed that the white patterned leaves of Sarracenia leucophylla capture predominantly honey bees - at least with us. With several plants some hundreds of them may be captured during a season, about what no beekeepers around will be happy. Therefore, we decided to close the pitchers with cotton-wool plugs which does no harm except of the prey loss. Instead of bees they get now a little fertilizer, which also works. However, at the natural environment also Sarracenia leucophylla has its enemies like the moth Exyra, which skillfull and savely uses the pitcher traps for its own peculiar purposes ...
  13. In literature, Byblis is usually described as a passive flypaper. But new examinations (2018/19) show that the genus possess active moving capture hairs. A highlight for CP-enthusiasts! In 2018, first videos by Dr. Gregory Allan (GB) on Facebook showed an active motion of Byblis trichomes. However, the topic literature describes the carnivorous genus as immobile. To review that behavior, we made own time lapse shots with a microscope that turned out to be surprisingly even for ourselves. They confirm clearly that the unicellular trichome stalks show an active motion down to the leaf surface after being touched by prey. Therefore, we looked up again the work of some CP pioneers like Charles Darwin (1875) or C.A. Fenner (1904), and included their findings and assumptions on Byblis complemented with excerpts from Dr. Gregory Allan's first shots (with his kind permission). In addition, we examined the related Lindernia cleistandra (all Lamiales) that likewise occurs in tropical Australia and that is like Byblis densly covered with glandular trichomes. However, its state regarding carnivory is yet unclear. We complemented the time lapse shots with an enzyme test, which we used even in 2010 to detect digestive enzymes in Byblis filifolia. Well, just view this film and you will know more about these interesting plants. We would like to express our thanks to Dr. Gregory Allan, Dr. Jan Schlauer as well as Holger und Anja Hennern for their kind support during the making of this film. Enjoy: