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Forum for Epiphytic Myrmecophytes


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About Derrick

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  1. Squamellaria wilsonii

    S.wilsonii was sunk by Jebb (1991) into S. imberbis. However, a 2016 Squamellaria revision by Chomicki et al., used morphology and molecular phylogenetics to re-seperate the two species. Therefore, S. wilsonii is now considered to be the species endemic to Taveuni island while the somewhat similar looking S.imberbis is endemic only to nearby Vanua Levu island. http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0151317
  2. Ensure that you scroll to the paper's end to see the domatia structures. Also, note that the taxonomy used raises some interesting questions.
  3. These plants were in shade and too far away for my fill in flash to help. It formed a guild with my possible H.moseleyanum and Dischidia nummularia.
  4. Mounting of ant plants

    I wonder if a small transparent container can be mounted above plants so that after suitably periodic fillings, nutrient containing water can slowly percolate down to the region between tuber bases and their mounts and/or basal root systems. The outlet from the water reservoir might merely be one or more small holes that permits a suitably slow flow down the mount surface, or a wick or even a combinations of both. Evening watering may help. From seeing hydnophytes respond positively and very rapidly to brief evening/night showers on Cape York Peninsula in the long dry season, it seems that hydnophyte roots are very efficient in regards to absorbing rainfall. Certainly root growth in the above plants is not natural.
  5. Here are the only two reports of pink fruits found in M.beccarii that I have been able to find. "Widespread both in and out of rainforest. Flowers white, fruit pink. [seed sample taken, seeds lab. 11 Oct 1976. Pollen, NSW, 28 Oct 1976." Collected by a C. H. Gittens, in the Kutini Payamu (Iron Range) National Park Region, Cape York Peninsula, Queensland, Australia. Ripe fruits quickly dry to a brown colour, so it is now impossible to check the accuracy of this claim. However, I strongly suspect it is an error. M.tuberosa also occurs in this region and its fruits have been described as pink. However, I consider them more translucent red than pink. Therefore, I suspect that M.tuberosa fruits have been inadvertently matched to a M.beccarii specimen. http://biocache.ala.org.au/occurrences/b77cae0e-e22e-4a27-9458-72bb098d2c00. Here is another claim of pink fruits in M.beccarii. http://biocache.ala.org.au/occurrences/ec05ac5c-37a3-482b-a841-f7f450edeffe "Cairns Inlet. Back mangrove, on Rhizophora. Leaves fleshy, midgreen (sic). Flowers white. Fruits pink, seeds 3. Photos with specimen at BRI. This is a collection made by Dr Camilla Huxley during her early ant-plant studies. That both dates are in 1976 may also be a revealing coincidence. I have examined numerous populations including those on Rhizophora not only along Cairns Inlet, but in numerous other sites for hundreds of kilometers along the Queensland coast. I have yet to see a single pink fruit. See xerophilia.ro for a pictorial series of M.beccarii And see M.beccarii growing on Rhizophora stilted mangroves on Trinity (Cairns) Inlet http://myrmecodia.invisionzone.com/index.php?/topic/157-myrmecodia-beccarii-northern-form-near-cairns-north-queensland-australia/ In summation, I strongly suspect there are no populations or even single plants with pink fruits, but my health allowing, I intend to check more populations.
  6. This quite unusual and large specimen was photographed on a Pandanus tree in a small area of somewhat savanna-like grasslands. Much of the 'natural' vegetation still extant along this road is regrowth rain forest. https://en.wikipedia.org/wiki/Pandanus The specimen formed a guild with a Myrmecodia species and ubiquitous Dischidia nummularia. Location was along the unsealed road along the northern edge of Milne Bay from Alotau to East Cape near the tip of the Papuan Peninsula. Note the 'bubbled' growth.
  7. Correct name Dischidia pectenoides H. Pearson published in the Journal of the Linnean Society, Botany, vol.35, p377, (1902.) http://www.biodiversitylibrary.org/page/335444#page/392/mode/1up
  8. from the Ant Gardens chapter by Bert Holldobler & Edward O. Wilson in their fascinating book "Journey of the ants". "ant gardens, which constitute the most complex and sophisticated of all symbioses between ants and flowering plants." Its a short but highly interesting read. See, http://www.primitivism.com/ant-gardens.htm Link now fixed. To say "in these structure the plants possess no adaptation" is quite wrong. Indeed, such plants have evolved very sophisticated methods of manipulating ants but as I have already explained, this is not necessarily obvious in gross plant forms. For example how do you expect to see the ant manipulative pheromones that the seeds of dedicated ant garden plants posses. Furthermore, some ant garden plant seed resembles the shape but not the colour (vision is not important to ants) of ant pupae which allied with their pheromones induce the ants to take the seed into their ant carton nests where they may germinate. Furthermore, obligate ant garden plant species may have specific adaptations to their rather specialised habitats but I am not ware of studies that inquire into this particular question. Furthermore. the quote above surely answers the question of whether dedicated ant garden plant species are myrmecophytic.
  9. http://www.amazon.com/Les-fourmis-plantes-exemple-coevolution/dp/2850040460
  10. Myrmecodia as an interest

    See the 2015 hits. http://www.writeopinions.com/myrmecodia
  11. Thanks Robert. I expect many of us will be looking forward to seeing images of Dischidia species documented by experts such as the Liddles, whom were also well supported by Dr Paul Forster who was well informed regarding these (and other) Malesian species.
  12. Myrmecodia from Wasur National Park-Merauke-Papua Province

    Frank. The tree with the whitish bark is probably a Paperbark Melaleuca species. They prefer lowland soils that are very swampy in the wet season and are extremely popular sites for hydnophytes and other ant-plants.
  13. In English. http://www.barnesandnoble.com/w/insects-and-plants-pierre-jolivet/1113114101?ean=9781877743108 http://www.alibris.com/search/books/isbn/9781877743108
  14. Hello Robert. I also think that your plant has a high probability of being from the Forster & Liddle collection. The late David Liddle had and his wife still has an enormous collection of Hoya & Dischidia in their famous Mareeba Nursery in far North Queensland and I expect he would have dearly wanted specimens of anything new. I see Forster & Liddle spelt it as littoralis but Schlechter in the original description used only one t. Ooops corrected my spelling.
  15. A myrmecophyte is defined as a plant that lives with a colony of ants, https://en.wikipedia.org/wiki/Myrmecophyte Providing housing and or food are NOT the only ways that may form mutualistic symbiotic ant and plant associations. True ant garden epiphytes are defined as those integrated into epiphytic carton nests as seed by ants. Certain ant species collect the seed of their mutualistic plant partners and deliberately plant them in their carton nests. This behaviour is induced primarily by ant-manipulative pheromones (scents) emitted by the seed. Surely, a development that is coevolutionary. (Kaufmann 2003 & Orivel & Leroy 2011). Thus such plants are myrmecophytic and because the plants help ant garden nests avoid collapse (read Kaufmann), they are in a collective sense even a little myrmecodomic. Kaufman, Eve. 2002. Southeast Asian ant gardens: diversity, ecology, ecosystematic significance, and evolution of mutualistic ant-epiphyte associations. PhD Thesis. http://publikationen.ub.uni-frankfurt.de/volltexte/2003/273/pdf/KaufmannEva.pdf this is the best link i currently have for the Orivel et Leroy article. http://www.myrmecologicalnews.org/cms/index.php?option=com_content&view=category&id=452&layout=default