jeff Posted February 23, 2014 Report Share Posted February 23, 2014 do you know the story of this taxon ? ( I am interested ) may be the area where it grow thanks for the answer jeff Link to comment Share on other sites More sharing options...
Aurélien Posted February 25, 2014 Report Share Posted February 25, 2014 And the publication! It look like a nomen nudum at present... Link to comment Share on other sites More sharing options...
Frank Posted February 25, 2014 Report Share Posted February 25, 2014 This plant moved into the American ant-plant scene about 2004 as "Hydnophytum species, needle-leaf". The story that came with it is that it grows as an epiphyte on trees in swamps on Borneo. The caudex supposedly stays relatively small, and that has indeed been the case for me. Neither of my plants has made ant entry holes above ground but when repotting I found them on the underside of the caudex. The potted plant is in a 4 inch pot. Link to comment Share on other sites More sharing options...
jeff Posted March 25, 2014 Author Report Share Posted March 25, 2014 Bonjour may be the specie named H.linearifolium by VALANTON (1927) ? JEFF Link to comment Share on other sites More sharing options...
Andreas Wistuba Posted March 25, 2014 Report Share Posted March 25, 2014 Bonjour may be the specie named H.linearifolium by VALANTON (1927) ? JEFF Hi Jeff, H. linearifolium is from New Guinea while H. spec. "Needle Leaf" originates from Sabah. All the best Andreas Link to comment Share on other sites More sharing options...
jeff Posted March 26, 2014 Author Report Share Posted March 26, 2014 yes but the leaves seem very close , it is just a observation jeff Link to comment Share on other sites More sharing options...
Frank Posted March 26, 2014 Report Share Posted March 26, 2014 Jeff, I am not so sure that the "leaves are very close". I don't have a translation of the Latin description of H. linearifolium. Can you read or translate it? Does it say anything about the leaves being thickened, almost succulent, especially towards their base? Because that is the way the leaves are on the "Needle Leaf" plant. Also, looking at the type image online (Google search) of Valeton's H. linearlfolium plant there is a distinct short petiole on the leaves that I don't see on the "Needle Leaf" plants. Frank Link to comment Share on other sites More sharing options...
Hatchimotoshinzan Posted April 29, 2014 Report Share Posted April 29, 2014 How are you growing these? I have two of them and have alternated sphagnum and a peat/perlite mix with bark. I have tried a closed high humidity environment as well as an open high circulation environment. Wet and dry. In every case the plants I have lose leaves and replace them with smaller pathetic looking ones coming out from stems at the base. This is the only member of this family I am having this kind of trouble with. Link to comment Share on other sites More sharing options...
Frank Posted April 30, 2014 Report Share Posted April 30, 2014 Hatchimotoshinzan, I still struggle with growing these myself. I hope some others with more success will jump in and give us both some advice. I shudder when I think about how many young ones I have lost. I have done better with high humidity environments and I think the roots are the key. Got to have happy roots or the leaves drop off. I will say that, at least with larger plants that are in 3 inch pots or bigger, I have felt that having a lot of coconut husk chips in the mix has been helpful. You have to overnight soak and rinse the husk chips at least 3 times to make sure there is no excess salt in them. I know this plant has circulated world-wide, so I hope some other growers can share their experiences with this plant. Link to comment Share on other sites More sharing options...
Aurélien Posted April 30, 2014 Report Share Posted April 30, 2014 I find this plant not so hard to grow... I grow it, like all Hydnophytum, Myrmephytum and big specimens of Myrmecodia in an open medium of fine orchid pine bark, a little bit charcoal, some expanded clay balls and a really few part of lived Sphagnum or fibrous peat. All these plants are in half-size clay pot, smaller the dimater is, better the plant grow. The lower part is well drained with round gravel. I put a small amount of fertiliser in the subtrate and I water the plant one time a week or lesser in winter, two times in really warm summer. Following this scheme, I have a lot of fruits, which have a really high germination rate. Plantlets grow slowly but well also! Link to comment Share on other sites More sharing options...
Frank Posted May 9, 2014 Report Share Posted May 9, 2014 Thanks Aurelien, The mix you use is significantly different than mine. I just happen to have some clay pellets around and will give your mix a try on some of my plants Frank franksantplants.com Link to comment Share on other sites More sharing options...
Hatchimotoshinzan Posted June 19, 2014 Report Share Posted June 19, 2014 Thanks for the help. I was not able to salvage the mother plants but am doing quite well with the two seedlings I managed to procure from them. Right now they are in tiny net pots in moss kept quite dry but in a humid enclosure. No problems yet. Link to comment Share on other sites More sharing options...
Hatchimotoshinzan Posted June 19, 2014 Report Share Posted June 19, 2014 On a side note has anyone tried to get plants through leaflets of this species? I discovered,accidentally, that almost all the main stream Myrmecodia and Hydnophytum will quickly set roots from leaves. I cannot tell you if they will ever produce a natural looking plant with a caudex however. Regards Link to comment Share on other sites More sharing options...
jeff Posted June 20, 2014 Author Report Share Posted June 20, 2014 Bonjour for me just blond peat , watering just foliar one day by week ( with fertilizer all 2 week) in a terra jeff Link to comment Share on other sites More sharing options...
Andreas Wistuba Posted June 20, 2014 Report Share Posted June 20, 2014 On a side note has anyone tried to get plants through leaflets of this species? I discovered,accidentally, that almost all the main stream Myrmecodia and Hydnophytum will quickly set roots from leaves. I cannot tell you if they will ever produce a natural looking plant with a caudex however. Regards After roots, did they also produce a shoot? Can you post pictures of such leaf-cuttings please. This sounds very interesting! All he best Andreas Link to comment Share on other sites More sharing options...
Stone Jaguar Posted June 20, 2014 Report Share Posted June 20, 2014 Greetings: Apropos of this observation and in confirmation of the claim posted here, I have attached an image of a young Myrmecodia platytyrea var. antoinii that produced a root flush from a broken central vein late last year. Unfortunately, the leaf was knocked off some time later by a greenhouse worker before it made the next step to new leaf production, but the image certainly proves that under certain conditions leaves of this species at least can generate viable roots. I am also starting to see what appears to be an interesting related phenomenon with a fully decapitated, un-branched young M. "jobiensis" from Andreas. The main stem looks like it is generating a number of tiny bulbils with swollen bases on the upper stem as opposed to just new leaf nodes. Still too early to be sure, but it certainly looks like yet another previously unreported route for asexual reproduction in these plants. Cheers, J Link to comment Share on other sites More sharing options...
Niek Hoebe Posted June 24, 2014 Report Share Posted June 24, 2014 This H. perangustum in the picture almost died, because the leaves and stems fell off as Hatchimotoshinzan described. In the picture it seems to recover, but H. perangustum seems very sensitive to drought. I think the leaves start to curl when the humidity is getting low. The roots are most fragile, they need air and quite constant moisture in my opinion. Thereby I tried to root cuttings of H. moseleyanum and H. formicarum, which is quit easy actually, but I can't get a nice caudex again. You can also cut the caudex in halves, vertically or horizontally, everything is possible as long as the halves are big enough. Especially a vertical cut is nice for exposition by the way. Also grafting worked pretty well, although the caudexes start to make side shoots that will use all the energy. Rooting leaves however is pretty new to me! Regards, Niek Link to comment Share on other sites More sharing options...
Art vogel Posted August 17, 2014 Report Share Posted August 17, 2014 This specie I have collected this ome in a heath forest Nabawan, Sabah, Borneo dec 1995. I have this one in the meantime for many years in cultivation at the Hortus Botanicus Leiden, In the recent past I have given away seeds to different persons who has visited the garden. The name I have seen in on the internet, but I have never seen a official publication, so my question: where comes the name from Link to comment Share on other sites More sharing options...
Art vogel Posted August 17, 2014 Report Share Posted August 17, 2014 Sorry , I forgot to mentioned who I am. My name ; Art Vogel, former curator of the Leiden Botanical Garden, retired since 2010 Link to comment Share on other sites More sharing options...
jeff Posted August 18, 2014 Author Report Share Posted August 18, 2014 Bonjour it is a malesian specie then , from the Sabah area the name is always a enigma ? jeff Link to comment Share on other sites More sharing options...
Stone Jaguar Posted August 18, 2014 Report Share Posted August 18, 2014 Mr. Vogel: Thank you very much for providing valuable provenance on this species. I know that many of us who grow it welcome data on its accession, since the locality clarifies general elevation, etc. Do you, perchance, have a collection number for this plant that you can share with us? Was it common in the area you collected it? The binomial in horticultural use is rumored to be a working placemark by a Hydnophytum specialist and has not been published, so far as I know. I think many people prefer H. sp. "needle leaf" until there is clarity about the validity of the name. Kind regards, J Link to comment Share on other sites More sharing options...
jeff Posted August 19, 2014 Author Report Share Posted August 19, 2014 H.perangustum is also a good name , more utilised here in europe.the more important is knowing the two are identical, before knowing that gave the name to this specie.jeff Link to comment Share on other sites More sharing options...
Derrick Posted August 19, 2014 Report Share Posted August 19, 2014 Bonjour Jeff, H. perangustum is NOT a good name, because it is (probably) only masquerading as a scientific taxon. As far as I and others can ascertain, it has not been described and published. As Jay points out, the use of hydnophytum "needle leaf" is more appropriate. Also, when it is eventually published (if Jebb has not already done so in his secret hydnophytum revision???) it may have a completely new name, but it is almost certain that the name H. perangustum will remain in circulation for a very long time. And unprincipled sales persons will happily sell exactly the same species under different names to uniformed members of the public. Of course, Jebb's revision will only provide an infinitesimal step forward in our understandings of hydnophytum taxonomy, unless it is supported by much DNA research which is highly unlikely. This is because DNA researches are having truly dramatic impacts on biological taxonomy. For example, what was previously accepted as one lichen species, is now estimated to consist of over 200 separate species. Another example is a very common New Zealand tree Kunzea ericoides that is now considered to be a complex of 10 species, thus there are nine new ones. http://phytokeys.pensoft.net/articles.php?id=1924 Furthermore, if Jebb's revision has not been published in something available to botanists, any new names in it are NOT valid. Link to comment Share on other sites More sharing options...
jeff Posted August 20, 2014 Author Report Share Posted August 20, 2014 Bonjour for me the term 'needle leaf' is not restrictive enough, other Hydnophytum have identical leaves or close , a risk of potential error.against , the perangustum name is now known and also its morphological caractereristiques.the publication remains to be done, if it is not already . jeff Link to comment Share on other sites More sharing options...
Derrick Posted August 20, 2014 Report Share Posted August 20, 2014 Currently the use of the unpublished name Hydnophytum perangustum is either due to ignorance or if used by anyone sufficiently botanically informed then it is dishonest. If one must must be stubborn, then perhaps using Hydnophytum sp "perangustum" is a better alternative, but double quotation marks must be used. Single quotation marks could infer that it is a registered cultivar. SEE. http://myrmecodia.invisionzone.com/index.php?/topic/431-a-too-common-error/ Link to comment Share on other sites More sharing options...
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