where should I start, after "MiniFAQ # 048" ??? ...
.... I've visited most of the resources mentioned in "MiniFAQ # 048" and
still don't know where to start to try and identify a plant I've never seen before, neither in the field nor in books or sites I've consulted. Is there a kind of "Finder" somewhere, where I could enter characteristics in an orderly way ? like orderly choices between 2 or 3 possibilities, so as to narrow the list at every step. When you're not a botanist, it's not easy, because every site I visited starts with names... I have here in the back lane an : 1.- herbaceous plant, that grows around a "branching" stem, not an unique stem with branches all starting on the same stem. The plant seems pretty "tender", not at all "woody" 2.- the taller individuals are about 2 foot high right now. (I live in Montreal Canada, and right now, dandelions have been in bloom for about 2 weeks, if you want to have an idea of the climate here) 3.- it bears yellow flowers arranged in rosettes (almost circles) at the very end of a particular "stem". They look a bit like those of "hypericum", with flowers that look like those of "buttercups"' but not shiny. Some of the flowers have already given way to little ~ ½ inch long "beans", one per flower. The beans stay upright. Not sure if there is or not one central "floweret" in the Rosette, or only an outside circle of "flowerets". 4.- the base of the leaves don't have their own "stem" (petiole in French") 5.- new/branching stems originate at the base of the leaves, between the leave and the mother stem 6.- the stems are round and bear hairs (~ ¼ inch)that don't prick or irritate 7.- the "veins" under the leaves also bear the same kind of hair 8.- the leaves themselves don't bear hair, either on top or underneath, but are not shiny 9.- the leaves are simple, but very "dented" even if all the "dents" are curvy. In some parts of the leaves, there is very little "leaf material" left along a main vein, until it spreads again along the vein branching. 10.- the contours of a leaf are "scalloppy" (~ ½ inch scallops), but on a plane, not in 2 dimensions 11.- the leaves don't show any little breathing "holes" underneath hope someone can help, and thanks for every tip. If it happens to be an invading species, say so, I'll try to destroy them before it's too late. Lise one who doesn't like not being able to put a name on things ;) ========================== |
Well, identifying a plant often depends on where you are.
A key to all 250 000 - 400 000 species that exist worldwide would be hopelessly cumbersome, so any inhabited area has a flora (many tropical countries excepted), dealing with the local plants. These flora's will be in the local libraries (and bookshops). Whether these flora's are on the internet will vary from country to country. FWIW, it sounds like you have one of the Cruciferae (nom. alt. Brassicaceae) PvR "Lise" schreef ... I've visited most of the resources mentioned in "MiniFAQ # 048" and still don't know where to start to try and identify a plant I've never seen before, neither in the field nor in books or sites I've consulted. |
It sounds like a species of Oenothera that I've also seen here in
Toronto. It may be O. biennis or O. parviflora, but these may not be the current names. Oenothera ("evening primroses") is a large and diverse genus of North American plants. If yours is the same as mine, it's a biennial. It makes a rosette of leaves the first year, and the second puts out a tall vertical flowering stalk and some similar long horizontal ones. The seed pods do look a little like beans. The plant dies after flowering. Comparing the description in my copy of Ontario Weeds, you've done a very good job of describing this plant in less technical terms. While some species of Oenothera have been domesticated into ornamental plants, this one is really too weedy and sprawling for a flower bed. It's pretty easy to control, if you don't want it, since the seeds generally fall close to the parent plant, so you can enjoy it in the back lane without worrying that it's going to take over your garden! The first year plants are easily killed with a hoe. Please let us know what you find out, now that you've got a better starting point. I find Ontario Weeds, a rather old publication of the Ontario Ministry of Agriculture, very useful in identifying plants in bits of wasteland in settled areas. You may be able to find something similar for agricultural areas of Quebec, although most of the plants are probably the same. Incidentally, I first saw this plant after we tore down our old garage and broke up and removed the concrete under it. The building was at least 50 and probably more like 75 years old. It was interesting to see what volunteered in that long buried gluey silt after it was exposed to light and air. Since I hadn't seen this plant anywhere near here before, it's conceivable that it came from seeds that had been buried for many decades. Many weedy plants have seeds with really surprising longevity, but I can't prove that this is an example of it. In article , Lise wrote: ... I've visited most of the resources mentioned in "MiniFAQ # 048" and still don't know where to start to try and identify a plant I've never seen before, neither in the field nor in books or sites I've consulted. Is there a kind of "Finder" somewhere, where I could enter characteristics in an orderly way ? like orderly choices between 2 or 3 possibilities, so as to narrow the list at every step. When you're not a botanist, it's not easy, because every site I visited starts with names... I have here in the back lane an : 1.- herbaceous plant, that grows around a "branching" stem, not an unique stem with branches all starting on the same stem. The plant seems pretty "tender", not at all "woody" 2.- the taller individuals are about 2 foot high right now. (I live in Montreal Canada, and right now, dandelions have been in bloom for about 2 weeks, if you want to have an idea of the climate here) 3.- it bears yellow flowers arranged in rosettes (almost circles) at the very end of a particular "stem". They look a bit like those of "hypericum", with flowers that look like those of "buttercups"' but not shiny. Some of the flowers have already given way to little ~ ½ inch long "beans", one per flower. The beans stay upright. Not sure if there is or not one central "floweret" in the Rosette, or only an outside circle of "flowerets". 4.- the base of the leaves don't have their own "stem" (petiole in French") 5.- new/branching stems originate at the base of the leaves, between the leave and the mother stem 6.- the stems are round and bear hairs (~ ¼ inch)that don't prick or irritate 7.- the "veins" under the leaves also bear the same kind of hair 8.- the leaves themselves don't bear hair, either on top or underneath, but are not shiny 9.- the leaves are simple, but very "dented" even if all the "dents" are curvy. In some parts of the leaves, there is very little "leaf material" left along a main vein, until it spreads again along the vein branching. 10.- the contours of a leaf are "scalloppy" (~ ½ inch scallops), but on a plane, not in 2 dimensions 11.- the leaves don't show any little breathing "holes" underneath hope someone can help, and thanks for every tip. If it happens to be an invading species, say so, I'll try to destroy them before it's too late. Lise one who doesn't like not being able to put a name on things ;) ========================== |
In message , Lise
writes ... I've visited most of the resources mentioned in "MiniFAQ # 048" and still don't know where to start to try and identify a plant I've never seen before, neither in the field nor in books or sites I've consulted. Is there a kind of "Finder" somewhere, where I could enter characteristics in an orderly way ? like orderly choices between 2 or 3 possibilities, so as to narrow the list at every step. When you're not a botanist, it's not easy, because every site I visited starts with names... I have here in the back lane an : 1.- herbaceous plant, that grows around a "branching" stem, not an unique stem with branches all starting on the same stem. The plant seems pretty "tender", not at all "woody" 2.- the taller individuals are about 2 foot high right now. (I live in Montreal Canada, and right now, dandelions have been in bloom for about 2 weeks, if you want to have an idea of the climate here) 3.- it bears yellow flowers arranged in rosettes (almost circles) at the very end of a particular "stem". They look a bit like those of "hypericum", with flowers that look like those of "buttercups"' but not shiny. Some of the flowers have already given way to little ~ ½ inch long "beans", one per flower. The beans stay upright. Not sure if there is or not one central "floweret" in the Rosette, or only an outside circle of "flowerets". 4.- the base of the leaves don't have their own "stem" (petiole in French") 5.- new/branching stems originate at the base of the leaves, between the leave and the mother stem 6.- the stems are round and bear hairs (~ ¼ inch)that don't prick or irritate 7.- the "veins" under the leaves also bear the same kind of hair 8.- the leaves themselves don't bear hair, either on top or underneath, but are not shiny 9.- the leaves are simple, but very "dented" even if all the "dents" are curvy. In some parts of the leaves, there is very little "leaf material" left along a main vein, until it spreads again along the vein branching. 10.- the contours of a leaf are "scalloppy" (~ ½ inch scallops), but on a plane, not in 2 dimensions 11.- the leaves don't show any little breathing "holes" underneath hope someone can help, and thanks for every tip. If it happens to be an invading species, say so, I'll try to destroy them before it's too late. PvR's suggestion of a crucifer is plausible. Crucifer flowers have 4 petals, which seeing that 5 petals is commoner among eudicots, is a useful confirming trait. (There are other yellow 4-petalled flowers, e.g. Greater Celandine, Crosswort, Welsh Poppy, Evening Primrose, but none with flowers in flattened clusters at the ends of stems come to mind.) The leaf shape suggests Barbarea or Brassica (or something not found in the UK) to me. There's a key to plant families online, which might help. See http://home.iae.nl/users/linea/start.html (Perhaps this can go in MiniFAQ # 049, assuming I wasn't mistaken in not seeing it in # 048.) Counting bracteoles (if any), sepals, petals, stamens and styles can help in identifying plants. -- Stewart Robert Hinsley |
Stewart Robert Hinsley schreef
There's a key to plant families online, which might help. See http://home.iae.nl/users/linea/start.html (Perhaps this can go in MiniFAQ # 049, assuming I wasn't mistaken in not seeing it in # 048.) *** Thanks for the support. As to this key, that is based on Thonner's key. The German original should be around here somewhere, but I failed to buy the English translation. I am not closely familiar with it as I found it to be quite intimidating, a feeling shared by everybody who I asked about it. I would not be inclined to advise its use to the layman. Something similar, but better supported, is part of the Delta package: http://delta-intkey.com/angio/www/ident.htm which is in the FAQ (although at the old address. I see they they have moved). However, even this is likely to be hard going for a casual user, who just wants to flip through a few pages of pictures to find a match. Usually the plant in question will be fairly common and easily found, provided that there is an internet source for that particular locality. That is usually not the case. A flora in bookform is much more likely to exist, even though the quality of the pictures will vary from place to place. PvR |
All times are GMT +1. The time now is 11:12 AM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
GardenBanter