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#92
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In article , Martin
writes Salcombe Rosemarie, the sailors friend? ![]() What, clingy, down to earth and does well in a bed ![]() -- Janet Tweedy Dalmatian Telegraph http://www.lancedal.demon.co.uk |
#93
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On 3/11/07 12:13, in article , "Janet Tweedy"
wrote: In article , Martin writes Salcombe Rosemarie, the sailors friend? ![]() What, clingy, down to earth and does well in a bed ![]() Probably best not associated with the Rambling Rector, then. ;-) -- Sacha http://www.hillhousenursery.co.uk South Devon (remove weeds from address) 'We do not inherit the earth from our ancestors, we borrow it from our children.' |
#94
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On 3/11/07 12:42, in article ,
"Martin" wrote: On Sat, 03 Nov 2007 12:30:50 +0000, Sacha wrote: On 3/11/07 12:13, in article , "Janet Tweedy" wrote: In article , Martin writes Salcombe Rosemarie, the sailors friend? ![]() What, clingy, down to earth and does well in a bed ![]() Probably best not associated with the Rambling Rector, then. ;-) or Busy Lizie. The hussy! -- Sacha http://www.hillhousenursery.co.uk South Devon (remove weeds from address) 'We do not inherit the earth from our ancestors, we borrow it from our children.' |
#95
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* Sacha wrote, On 03/11/2007 12:54:
On 3/11/07 12:42, in article , "Martin" wrote: On Sat, 03 Nov 2007 12:30:50 +0000, Sacha wrote: On 3/11/07 12:13, in article , "Janet Tweedy" wrote: In article , Martin writes Salcombe Rosemarie, the sailors friend? ![]() What, clingy, down to earth and does well in a bed ![]() Probably best not associated with the Rambling Rector, then. ;-) or Busy Lizie. The hussy! It could be planted with Brazen Hussies though ![]() -- Cheers, Serena Just when I was getting used to yesterday, along came today. |
#96
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In article , Nick Maclaren
writes and had the most appalling stomach craps ![]() -- Janet Tweedy Dalmatian Telegraph http://www.lancedal.demon.co.uk |
#97
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In article , Martin
writes Calm down. He's already been exposed. Yes sorry Martin, my follow up seemed to overlap the wealth of other replies! -- Janet Tweedy Dalmatian Telegraph http://www.lancedal.demon.co.uk |
#98
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![]() "Nick Maclaren" wrote in message ... Er, not quite. It seems that the difference is more complicated than that, and it is unclear whether "Russian" versus "French" tarragon is different varieties or different growth (as normal ivy versus tree ivy). Tarragon does vary between tasteless and strongly flavoured, but the cause of the difference is, I believe, unknown. In particular, "Russian" tarragon can develop into "French" tarragon after some years of growth, and "French" tarragon can revert to "Russian" tarragon. I tried chasing this issue down some years back, and eventually gave up. I've been looking (casually) at various reference books including the Oxford Book of Food Plants and Davidson's Oxford Companion to Food (both of which are the type of book that one opens to check one thing and find that one is still reading it an hour later). There appear to be 2 species: Artemisia dracunculus (French) and A. dracunculoides (Russian). I can see why you gave up as none of the references is definitive. What is needed is a botanist/gourmet to sort out the confusion{:-) The difference between true (Grecian) bay, Californian bay and most others is that they are unrelated plants with similar appearances and tastes. The similarity of appearance is not surprising, as it is a very common one for dry-terrain shrubs. True bay is Laurus nobilis, Californian bay is Umbellularia californica, and there are others. Interestingly, U. californica is also known as the Oregon Myrtle and in that state, apparently, there are numerous roadside stalls selling knick-knacks made from the wood. The selling point is the myth that it only grows there and in the Holy Land (absolute nonsense, of course). I acquired a plank of it some years ago and it is lovely stuff to work. Fresh-cut surfaces give off a lemony smell. Graham |
#99
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In article _0oXi.174399$Da.95462@pd7urf1no, says...
"Nick Maclaren" wrote in message ... Er, not quite. It seems that the difference is more complicated than that, and it is unclear whether "Russian" versus "French" tarragon is different varieties or different growth (as normal ivy versus tree ivy). Tarragon does vary between tasteless and strongly flavoured, but the cause of the difference is, I believe, unknown. In particular, "Russian" tarragon can develop into "French" tarragon after some years of growth, and "French" tarragon can revert to "Russian" tarragon. I tried chasing this issue down some years back, and eventually gave up. I've been looking (casually) at various reference books including the Oxford Book of Food Plants and Davidson's Oxford Companion to Food (both of which are the type of book that one opens to check one thing and find that one is still reading it an hour later). There appear to be 2 species: Artemisia dracunculus (French) and A. dracunculoides (Russian). I can see why you gave up as none of the references is definitive. What is needed is a botanist/gourmet to sort out the confusion{:-) . Graham The two tarragons are completely different species they look different taste different and grow differently, so called Russian tarragon is easy to do from seed, the french is not, as to correct species names, no idea! -- Charlie Pridham, Gardening in Cornwall www.roselandhouse.co.uk Holders of national collections of Clematis viticella cultivars and Lapageria rosea |
#100
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![]() In article , Charlie Pridham writes: | | I've been looking (casually) at various reference books including the Oxford | Book of Food Plants and Davidson's Oxford Companion to Food (both of which | are the type of book that one opens to check one thing and find that one is | still reading it an hour later). There appear to be 2 species: Artemisia | dracunculus (French) and A. dracunculoides (Russian). I can see why you | gave up as none of the references is definitive. What is needed is a | botanist/gourmet to sort out the confusion{:-) | | The two tarragons are completely different species they look different | taste different and grow differently, so called Russian tarragon is easy | to do from seed, the french is not, as to correct species names, no idea! I believe that is false, and there is a single, polymorphic species. And the regression/development effect I mentioned turns mere confusion into chaos. I.e. there are plants that are clearly one or the other, a complete range of intermediates, and a clone's position on the scale can wander around a bit. Regards, Nick Maclaren. |
#101
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In message , Nick Maclaren
writes In article , Charlie Pridham writes: | | I've been looking (casually) at various reference books including | the Oxford | Book of Food Plants and Davidson's Oxford Companion to Food (both | of which | are the type of book that one opens to check one thing and find | that one is | still reading it an hour later). There appear to be 2 species: Artemisia | dracunculus (French) and A. dracunculoides (Russian). I can see why you | gave up as none of the references is definitive. What is needed is a | botanist/gourmet to sort out the confusion{:-) | | The two tarragons are completely different species they look different | taste different and grow differently, so called Russian tarragon is easy | to do from seed, the french is not, as to correct species names, no idea! I believe that is false, and there is a single, polymorphic species. And the regression/development effect I mentioned turns mere confusion into chaos. I.e. there are plants that are clearly one or the other, a complete range of intermediates, and a clone's position on the scale can wander around a bit. There's not much botanical available online, but I found a 2007 paper with assorted chromosome counts for subgenus Dracunculus. This reports 4 cytotypes of A. dracunculus (diploid, tetraploid, hexaploid and decaploid), and gives A. dracunculoides as hexaploid. Wikipedia says that French tarragon can't be propagated by seed, but elsewhere I see claims that it's just a matter of poor seed set in cool climates. Botanists don't seem to agree as to whether there is one species or two. There is a paper on Artemisia phylogeny, but it's behind a pay-wall, and I doubt that is sheds light on the dracunculus/dracuncoloides issue. Regards, Nick Maclaren. -- Stewart Robert Hinsley |
#102
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![]() In article , Stewart Robert Hinsley writes: | | There's not much botanical available online, but I found a 2007 paper | with assorted chromosome counts for subgenus Dracunculus. This reports 4 | cytotypes of A. dracunculus (diploid, tetraploid, hexaploid and | decaploid), and gives A. dracunculoides as hexaploid. Wikipedia says | that French tarragon can't be propagated by seed, but elsewhere I see | claims that it's just a matter of poor seed set in cool climates. Boggle. I didn't know about the chromosome counts. That sounds bizarre even by plant standards. | Botanists don't seem to agree as to whether there is one species or two. Or four, or .... Until and unless there is some evidence on whether the various ploidies are inter-fertile, that sounds like angels on a pinhead material. | There is a paper on Artemisia phylogeny, but it's behind a pay-wall, and | I doubt that is sheds light on the dracunculus/dracuncoloides issue. Yeah, me too :-( Regards, Nick Maclaren. |
#103
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In message , Nick Maclaren
writes In article , Stewart Robert Hinsley writes: | | There's not much botanical available online, but I found a 2007 paper | with assorted chromosome counts for subgenus Dracunculus. This reports 4 | cytotypes of A. dracunculus (diploid, tetraploid, hexaploid and | decaploid), and gives A. dracunculoides as hexaploid. Wikipedia says | that French tarragon can't be propagated by seed, but elsewhere I see | claims that it's just a matter of poor seed set in cool climates. Boggle. I didn't know about the chromosome counts. That sounds bizarre even by plant standards. There's many plant "species" with multiple cytotypes, and botanists historically have not commonly recognised cytotypes as species. (It seems to me that this attitude is beginning to change.) For example the Lesser Celandine has (at least) three cytotypes - diploids (ssp. ficaria), tetraploids (ssp. bulbifera) and triploids. Contrary to Stace, I reckon this to be a clear case of two species - he says that triploids are completely sterile. (Compared to a couple of triploid mallow hybrids [sylvestris x durieui and alcea x moschata] I grow, which have seed set at about 0.5%.) The Yellow Archangel and Rosebay Willow Herb have diploid and tetraploid cytotypes. So does Hibiscus trionum. And then there's the various tetraploid cultivars, such as Myosotis 'Azur'. Some sterile Hibiscus syriacus cultivars were created by forming tetraploids with colchicine treatment, and backcrossing to the diploids. In the Centaurea jacea complex of knapweeds (C. jacea and C. nigra) the species boundary appears to lie not between the jacea- and nigra-morphs, but between the diploid and tetraploid cytotypes. The existence of multiple cytotypes suggests the existence of multiple species, but is not conclusive. I don't know of an unambiguous case of a plant species polymorphic for ploidy, but I wouldn't be surprised if there was one. There are permanent odd polyploids which segregate m haploid genomes into the embryo sac, and n haploid genomes into the pollen - the best known case is the dog roses, but there's maybe half a dozen other cases known. One could imagine a plant in which the same segregation happened in triploids, except not specific to either sex, so diploids, triploids and tetraploids were freely interbreeding. Alternately if triploids produced unreduced gametes, and tetraploids and hexaploids had regular meiosis, you could have a mix of diploids, triploid, tetraploids and hexaploids - and possibly more depending on what pentaploids did. | Botanists don't seem to agree as to whether there is one species or two. Or four, or .... Until and unless there is some evidence on whether the various ploidies are inter-fertile, that sounds like angels on a pinhead material. | There is a paper on Artemisia phylogeny, but it's behind a pay-wall, and | I doubt that is sheds light on the dracunculus/dracuncoloides issue. Yeah, me too :-( Regards, Nick Maclaren. -- Stewart Robert Hinsley |
#104
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![]() In article , Stewart Robert Hinsley writes: | | There's many plant "species" with multiple cytotypes, and botanists | historically have not commonly recognised cytotypes as species. (It | seems to me that this attitude is beginning to change.) Yes, I knew that, but I didn't know that that any included from diploid to decaploid! | For example the Lesser Celandine has (at least) three cytotypes - | diploids (ssp. ficaria), tetraploids (ssp. bulbifera) and triploids. | Contrary to Stace, I reckon this to be a clear case of two species - he | says that triploids are completely sterile. (Compared to a couple of | triploid mallow hybrids [sylvestris x durieui and alcea x moschata] I | grow, which have seed set at about 0.5%.) Yes. The question is how distinct they are, with interfertility being the best criterion (but not the only one). | The existence of multiple cytotypes suggests the existence of multiple | species, but is not conclusive. I don't know of an unambiguous case of a | plant species polymorphic for ploidy, but I wouldn't be surprised if | there was one. ... Nor would I, but it is not reasonable to state that such a plant is definitely a single species, without confirmatory evidence of some sort. Some scientists have great difficulty in using the word "probably", let alone the word "possibly", with regard to their theories. Regards, Nick Maclaren. |
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