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    Cayenne - French Guyana

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  1. Hello everyone, This year I'm again in the fields, and some new species have been discovered (G.oxycentron, U.alpina, U.calycifida) and identified in my small country. But there is much more to do....I have some pictures of two plants I can't identify myself, I think I'm not skilled enough, that's why I need your help. Here are two links pointing to pictures of the 2 species I need to be identified : Utricularia sp.01 : Utricularia sp.02 : Well, in my eyes, both are Utricularia subulata...but it is true that the plants look "weird" when they are next to a "true" Utricularia subulata, especially sp.01 What do you think ? Any idea ? Many thanks for help !
  2. Dear friends, I'm living since nearly 10 years now in French Guyana, a little country situated on the Atlantic coast, next to the border of Brazil, in the Amazonas area. Here we can find many Utricularia - 25 species have been discovered until today - , two Drosera, Catopsis berteroniana, and some Genlisea. It was always tought that our country is home of Genlisea pygmaea. I never found this plant during all the years down here. Wich not mean that the plant doesn't exist here. I found a plant named Genlisea filiformis 2012. The "discovery" of this plant by myself confirmed it's presence in this country : it's presence here was suspected until the plant was found : strangely, the plant was listed as being present in Fr.Guyana in official botanical listings, but without any proven localisation data, nore samples. Here is my homepage with some pictures of Genlisea filiformis : This year I received a mail, from a person who found another species of Genlisea. This person is not a specialist of carnivorous plants, but is interested in these plants, and in plants in general. Well....after a message on the german forum asking for ID confirmation, it was confirmed that we have a new species in our country, wich name is Genlisea oxycentron. Here here are the first pictures from this new plant, on the discoverer's homepage : (please notice : the link still includes the name "Genlisea pygmaea") Well....I'm still looking for Genlisea pygmaea, and hope I'll find it one day. A botanist who's working for the local herbarium (CAY) told me that there are 2 species of Genlisea in Fr.Guyana. That was before G.oxycentron was definitively identified. It's pretty interesting to notice that Genlisea pygmaea's presence is impregnated so deep in the minds, or are there 3 species of Genlisea in this country ? Well, do you know what ? There is a third species of Genlisea wich presence is suspected here, it's Genlisea pulchella ! Lets try to find it, and then my friends, I promiss, I'll find Genlisea pygmaea. Oh, btw....G.pygmaea is strictly protected from destruction in my country, and is listed on the list of plants of patrimonial interest... This is becoming the Sisyphus mythos IRL ;-)
  3. hello everyone, many thanks to all the people interested in my comments, and about a plant wich appears to be very interesting, once you know it's "secrets" @ Fernando : I found some pics of the Nourague Inselberg on the internet, it looks amazing! I'm surprised you found U.hispida there, as I would not expect this species to grow on inselbergs. It is an amazing experience to see an "island" like this after a flight over the jungle...during one hour, I flew over the jungle, wich was nothing else than a green ocean...and then, suddenly, a gigantic mountain made of pure rock appears, like if it was thrown there by a giant's hand. On my homepage (section "cp biotopes") you'll see a picture I shot from the heli(copter) : you'll see how massive this granitic rock is. Also, one must imagine that these rocky mountains were, billions of years before today, the top of the so-called "Guyana schield", wich is the rocky mother-substrate of the south-american continent. By the way : Inselberg is a german word, wich mean litteraly "island-mountain", or better, "mountain wich look like an island (in an ocean of green, in this case)" U.hispida grow (also) on places like these, and sometimes, the shape and color of the corolla can change : on an Inselberg in the south of the country, the corollas are violet, with a yellow blotch (see pictures on my site) I could not see any long shadows, so I'm guessing the video was taken around mid-day, while the pic above (taken at sunrise) represented mucilage mixed with morning dew? You are right, Fernando. The day I made the video, I woke up at 5 o'clock in the morning to be present as early as posssible on the site. In fact, I wanted to see an sunrise over a savana, and observe what happens at that time : the picture was schot at 7 o'clock exactly, at a moment during wich the humidity of the air is so intense that "smog" is build, and raises up from the ground : this is due to the intense gap of temperature between air temperature and water temperature. I observed the same phaenomon (of smog building) many times in another case, over the jungle : in this case, it is the evapo-transpiration due to the plants, wich can be directly observed with nacked eyes over the trees. On the picture you down-linked, the drops are made of _pure_ morning dew ; I insist on the word "pure", because the plant is covered with mucilage, but this mucilage dont build drops like a drosera do, for example : the viscosa mucilage build a very thin layer on the surface of the flowerstalk, and there are no visible drops. Next time I go out, I'll take my binocular to see how the surface of a fresh plant looks like. I dont expect to be able to take pictures, because I dont have a specialized fixture to mount my camera on the binocular. The video was taken around midday, that's why you dont see the "dew" on the plants : the air temperature was much more elevated than after sunrise : 32°C at midday, against 23°C at sunrise @ Andreas : [size=4] [/size][color=#666666][font=tahoma, helvetica, arial, sans-serif][size=3]Ein Video in drei Sprachen! Unfortunately I only understand German and Anglais![/size][/font][/color] Well, I did so to spread knowledge, even if my englich is not of the best : but as I always say, "communication is nothing else than the fine art of trying to be understooden" Uh, how scary - flower scapes which catch and digest grasshoppers! Well, it is not certain that the "preys" are "preys"...nore that they are digested. As Fernando and I suggested, it is certainly a way for the plant to defend itself against predators, and so not to be eaten by thoose insects. It´s a nice site by the way...but the proximity of a busy road is somehow shocking! know, I'm interested in things that I name "contact areas", like in Europe the areas covered with vegetation between two busy roads, like an "autobahn" (a highway) ; I was always wondering how a biotope could develop itself in places like these, and wich plants grow there. Also, somehow on the same way, our savanas are "contact areas" between the "human-mecanical-civilization" and "pure nature", and because of this perticuliar position, they are very little explored : what can you see (and know) about a place you go thorough at high speed ? That's why I discovered this U.viscosa station, wich is the 3rd known of Fr.Guyana, because nobody took it's time to get out (of the car) to explore the surroundings... But, one must know that the explanation of this phaenomon is easy : exploring savanas can be difficult, because you have to cross small streams before you get to it, and the sun is rather hot, and intense on the aequator. Also, day temperatures are year-round over 26°C, humidity level is between 80 and 95%, like in a greenhouse, and doing efforts under these rather harsh conditions need a certain type of "mind". And, last but not least, who is interested in "small pink flowers" ? only some botanists, and we, the CP community.... For example, on the other side of the road, houses will be built....who cares about the pink flowers ? nobody. I told about my job : I'm building (not alone, of course) a city for 15 000 people down here : what can some small pink flowers do against gigantic dozers, and billions of "dollars" ? not much....that's why I try to lift some secrets, before it is too late. Btw : go onto my site, and feel free to visit the "biotope" section : you'll see a cut thorough the soil, and you'll be able to observe how fragile the savana's biotopes are.
  4. Hi dear friends, well, I hope you understood all of my writings...I made a small video (link is below) , but here are some answers : @ Fernando: 1) By "elevated" you mean it is above the water level, right? No ! in the central area of this savana, the water level is about 2 to 5 cm, whilst the water level of the areas wich surround this central area is about 10 to 20cm in deepness. 2) So you've only seen CPs around this coastal plain of Fr.Guiana? No, again ;-) I've seen most of them in the coastal plain area, but I've been on the Nourague Inselberg, where I observed U.hispida (you can see some pictures of this plant on my homepage) . On this Inselberg is a scientific station, from the CNRS, and I was there for a maintenance of their solar system, and to repair their hydraulic turbine. Also, it's one of the places where U.choristotheca grow, also Catopsis berteroniana, wich I both didn't had time to find, unfortunately (helicopter time is costfull...) ; I hope I can return there one day, but with my new job, it will be rather difficult : we are building a brand new city for 15 000 people down here, and that take time... On my site I give an explanation about these kind of areas, and why you find CPs there 17 000 years ago, or so, a gigantic savana covered the country (like Gran Sabana/Venezuela) , and these stations are relict stations from these ancient times. 3) So was it dead already? Maybe this mucilage suffocates them ? no couldn't move, or free himself from this sticky mucilage. he wanted to flee, but he could not ! 4) So (just to be sure) you're saying that it was difficult to separate the insects from the scapes, not from the mucilage, correct? (that is, the insect wasn't just coated with mucilage, but literally adhered to the scape? Yes ! it adhered to the plant's scape : he was glued to it. Imagine you are grabbing a piece of wood, covered with glu : it was exactly the same 5) Either way, I'd guess this is defensive and not predatory yes, certainly. to prevent damages to the plant : grasshoppers (and other insects) sometimes eat plants, and this is a good way for the plant to defend itself Hi François ! 6) Very interesting. Expecially the grasshopper capture. well, here is a video of it : I just hope you understand what I'm saying. If you don't it's because it's french, or german !
  5. Hi all, @ Fernando : thanks for your comments, and corrections (yes, I meant sunrise, of frenglish is so bat, I'm sorry for the confusion) concerning the water level : the savana is covered with water, that's true. But the area in the middle of the savana is at a higher level than the margins. On the elevated part of the biotope, you'll find many carnivorous plants, like U.nana or U.hispida, plants wich you'll not find in the areas were U.subulata or U.viscosa grow. It's the same for Drosera capillaris : it did not grow under water in this savana, but I saw it growing submerged in other places. Also, I never saw any Drosera sessilifolia down here, even if I suspect more Drosera to be present in Fr.Guyana. If cultivated, "our" french Guyanese plants live as a perenial (if the substrate is kept wet all year) If the substrate dry out, the plants survive by producing great amounts of seeds, and willl spred like U.spatulata did it in our collections. It really seem that D.capilllaris has adapted it's life cyclus to the local conditions. Also, one must know that our savanas are close to the ocean : they cover a small bend of the country (20 to 40Km) and follow the margins of the country on the ocean side : alll the rest of the country is covered by deep primary forest. People live only on this small we have a density of human population of 0.46 inhabitants per sq.Km ! The savanas are influenced by the tide of the sea, and their elevation is something like 3m above ocean level in most cases ! you can feel the influence of the tide up to 30 to 40Km inside of the country, if you are on a river (well, our "rivers" are often as large as 1 to 2 Km in the conntact area to the ocean...) Concerning the grasshopper caught by the U.viscosa(s) : I'm certain that this little insect was not grabbing the scape...I give the plants a litttle push, each time I saw an insect "caught" on it, and each time, the hopper didn't move....but as I was walkint torought the grasses, many houndreds of them tried to flee from me by hopping around. Also, I tried to "free" the hoppers (two of them, at least) can I say....they lost their legs...unfortunately...sorry for them....and as the were pulled free from the plants, they immediately escaped. The hopper on the picture with my hand was the first I tried to free : I saw him doing movements, to escape, but he was really caught by the plant. I'm also very surprised about this observation, of course, as you are. But you can believe me : the insect was caught by the plants. Tomorrow I'll be in the fields, and willl make further examinations. And of course I'll tell you about it. I'm working on a Google-Earth presentation to schow all the areas were you can find CPs here, with the limits of the different biotopes I explored (please let me some time for doing it).
  6. Hi dear friends and cp-enthousiasts, I published some more pictures of this intriguing plant on my homepage this year. Fernando, you seem to be right : this plant is certainly an annual. I live in Fr.Guyana, and most of the savanas down here (wich are biotopes for our plants ) burn down every year, because of the bushfires we have. after a fire, the savana is a stumpy field, the soil is rock hard, and nothing else than grasses seem to grow there....but wait until the rainy season arrives, and then , you will see many species appear ! concerning U.viscosa, I was lucky to discover why this plant is named like that : it's because it is covered with a very sticky substance, wich help the plant to....catch it's predators ! I'm not certain that I'm right, but the fact is that many of the plants in the fields were covered with trapped insects (grasshoppers in this case) , and they are not able to free themselves from this mortal trap. I dont know if the plant are covered with trichomes to absorb the insect's nutrients, but the fact is that this plant is also able to catch preys ( on it's surface ) under water ! what do you think about it ? see the pictures on my site, at this adress :
  7. Hello dear people, I'm living in French Guyana for 4 years now, and before that I was in France for about 30 years. I 'm building my collection up again since 2 years now (I'm growing CP's since 15 years ) , and I'm trying to find out what kind of plants I'll be able to grow down's a pretty riscky belief : many of my "test" plants died away before I decide to focus mainly on Sarracenia and Dionaea (and some others of course). Also some few Nepenthes are on the party, and newly some test-growing of pygmy will, maybe, help me to extend the collection. My country is an interresting land, were it's possible to find 26 species of carnivorous plants. Here we have : Catopsis - 2sp. Genlisea - 2sp. Drosera - 21sp. Utricularia Many of these plants are documented on my internet page, wich adress I'll inform you later about, because of little details I have to fix and pages I have to complete.... Here is one of my pictures :