Fernando Rivadavia

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Everything posted by Fernando Rivadavia

  1. Considering how robust the inflorescences are (see pic below), I assume they produce tons of seeds. Unfortunately we were there a bit too early for seed. But when we returned 7 months later we searched extensively and couldn't find a single seedling, only plantlets budding from roots and stems. Maybe that's why they produce so much seed, because hardly any survive long after germination? Or maybe the seeds lie dormant waiting for a fire? Don't know... Fernando Rivadavia
  2. Here's the proof: me with a few plants, including one that has a stem 1.2m in length. The black stuff you see are mostly old leaves hanging on to the stems, not roots. My colleague Paulo Gonella is the one to the side, getting ready to make paratypes of these specimens. Best wishes, Fernando Rivadavia
  3. Amazingly different! And I've seen others different from the above. Awesome species!
  4. Dani: although I lost a lot of plants, I probably didn't lose any species/ hybrids. Carlos: It took 8h for the first panel and 7h for the second panel, but I've spent at least a few more hours planting all the baby Pings from those leaf cuttings - and I've still got 3 tupperwares full of leaves! Mantas: show us your wall! :) Here are two pics of the first part of the wall where I planted the leaf cuttings, they're coming in nicely: All the best, Fernando Rivadavia
  5. During the week, I began working on the left side of the wall, slowly removing all the remaining PIngs. Here's a view of when it was about 1/2 done: And here with all the Pings removed, but still with lots of Utrics (which were under the mesh): Here's a view of some of the plants removed from the wall as well as a tray with leaves (which I hope will make many new babies to repopulate the new walls): I proceeded to pick the Pings clean of their leaves, not only to use them as leaf cuttings, but also because it's easier to replant the Pings when they are reduced to jus
  6. OK, so last weekend I took down the first of the two panels. It was pretty dry, thus manageable for a single person to carry. Here's the empty wall after I removed the panel. I was happy to see there was no mold and it seemed in perfect condition - probably thanks to the hard plastic sheet we placed behind the sphagnum panel. Here you can see the empty space with just the porous hose irrigation sticking out: I covered my floor with a big plastic sheet and placed the panel flat on the ground, then removed all the remaining Pings, then with scissors started cutting the bird
  7. Hello everyone, It's been several months since my last update. A lot has happened this year. Most importantly, I accidently killed halfthe plants on the wall by using the wrong insecticide... :-P This is the last full picture I took of the wall back in October 2014: And this is what it looked like in January 2015 after the stupid accident: I was quite bummed and lost several species/ hybrids. But it was probably good timing since the wall needed a make-over sooner rather than later. The Sphangum had decomposed very quickly (due
  8. Yes, small U.reniformis. U.nephrophylla has flimsier leaves with "pustules".
  9. Yes, you have D.kaieteurensis. I love the contrast between the white hairs on the scapes and the wine red color plants acquire in the wild. See below a scan of a bad pic I took years ago on the Gran Sabana of D.kaieteurensis (left) and D.felix (right):
  10. After both G.aurea and U.gibba had their genomes sequenced, the latest advance is that we've got a new record for smallest plant genome: the recently described Genlisea tuberosa! See a summary here: http://www.en.uni-muenchen.de/news/newsarchiv/2014/heubl_botanik.html And the full paper here: http://aob.oxfordjournals.org/content/114/8/1651.abstract Enjoy!, Fernando Rivadavia
  11. LOL, yes long overdue and this one has definitely been on my list! ;)
  12. As far as I know it hasn't been seen since the collections mentioned in Taylor. So it would be awesome if someone has re-discovered it. But I'll believe it when I see it. ;) Fernando
  13. Wow, congrats on all the beautiful plants!! I especially liked the sundews and Utrics of course. :) Would love to see close-ups of those vertical panels you have in the back.
  14. D.graomogolensis does not grow at Ibitipoca (which is where type D.villosa is from). Maybe it was from Itacambira? Anyway, nice plants, congrats!! Fernando Rivadavia
  15. Wow, great pics, thanks for sharing! It's not every day we see field reports from Madagascar.
  16. Dave, That phylogeny is not based on ploidy, LOL! Ploidy was merely something that we found to coincide with certain branches of the phylogenetic tree resulting from the DNA sequences. Here's the link if you want to review: http://www.amjbot.org/content/90/1/123.full You might also enjoy this website: http://www.carnivorousplants.org/cp/EvolutionDrosera.php Enjoy the reading! ;) Fernando Rivadavia P.S. Thanks for the pics Vince!
  17. For those who can't read Portuguese, Carlos & Paulo found a possible new hybrid between D.montana and D.spirocalyx. Most importantly though, they found 2 new populations of D.quartzicola -- only 4 were previously known! All the best, Fernando Rivadavia
  18. Wow, awesome shots!!! Thanks so much for taking the time to post them all here, truly appreciated. I was going to ask if some of those were D.capesis, and if so, whether you had pulled them out... That sucks! Best wishes, Fernando Rivadavia
  19. Wow, congrats!! How difficult to cultivate are you finding this species? Do you know where your plants are from?
  20. Hey Dave, As I wrote elsewhere, compare species with similarly shaped leaves like D.aliciae and D.tomentosa, as well as D.villosa and D.capensis and you will see a very clear difference in the way the young leaves unfurl, with one clearly having the lamina folded once over the petiole, whereas the other has leaves curled like fern fronds. Leaf vernation has a very strong phylogenetic correlation in Drosera, although there are exceptions. From memory (too lazy to check right now, so may forget some details for any of the plants below), all Brazilian tetraploids are circinate, with the e
  21. Dave, compare similar shaped leaves like D.aliciae and D.tomentosa. Notice how the first has the lamina folded over the petiole, while in the latter the leaf is all rolled up. Then compare plants like D.capensis and D.villosa and you will see the same thing (with the exception of that one D.capensis form that caught our attention *because* it was the exception). Although in some cases vernation seems to correlate to leaf shape, in most it seems to follow a phylogenetic pattern. Best wishes, Fernando
  22. Hello again everyone, I just took a few pics today to show you all some of the interesting flowers I have on my wall right now. Here's an interesting hybrid which had only flowered for me once, about 2 years ago. I don't know what it is and the rosettes seem to stay in the dormant stage non-stop. My guess is that this is P.debbertiana X P.agnata. Tell me what you think it is: And here you can see this hybrid (single flower out of cluster of rosettes with narrow hairy leaves) surrounded by other Pings, including a P.moranensis (the small "Molango" form maybe?) with purple flo
  23. Wow, 4 inches is pretty big already. Do you have pics of the whole plants that you can post here? Do you know what form it is? Do all the new leaves now have circinate vernation, do they produce both, or did they maybe switch back to involute? Thanks, Fernando