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#1
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Plant ID Taxonomy?
Is there a systematic list of plants that can be used for
identification? Given I know things like leaf shape, arrangement of veins in the leaf, bark characteristics, branching, etc, is there an interactive database that gives me suggestions of the ID plus pictures? |
#2
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Stubby wrote:
Is there a systematic list of plants that can be used for identification? Given I know things like leaf shape, arrangement of veins in the leaf, bark characteristics, branching, etc, is there an interactive database that gives me suggestions of the ID plus pictures? You might want to locate a copy of C. L. Porter's "Taxonomy of Flowering Plants" (W. H. Freeman, 1967). This covers the angiosperms, both dicots and monocots. The classification of angiosperms is primarily based on the structure of individual flowers with secondary consideration given to "fruits" (broadly defined to include grains and various pods) and the arrangement of flowers into clusters. The goal is to classify plants according to their anscestry. However, without a complete fossil record of anscestors, classification depends on assuming that plants with a similar flower structure had a more recent common anscestor than flowers with unlike structure. Thus, two plants with 4-petal flowers are more closely related than either is to a plant with 5-petal flowers (when degenerate petals are included). Only recently is plant DNA becoming involved in taxonomy. Gymnosperms (conifers, cycads, ginkgos) are a different subject. -- David E. Ross URL:http://www.rossde.com/ I use Mozilla as my Web browser because I want a browser that complies with Web standards. See URL:http://www.mozilla.org/. |
#3
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David Ross wrote:
Stubby wrote: Is there a systematic list of plants that can be used for identification? Given I know things like leaf shape, arrangement of veins in the leaf, bark characteristics, branching, etc, is there an interactive database that gives me suggestions of the ID plus pictures? You might want to locate a copy of C. L. Porter's "Taxonomy of Flowering Plants" (W. H. Freeman, 1967). This covers the angiosperms, both dicots and monocots. The classification of angiosperms is primarily based on the structure of individual flowers with secondary consideration given to "fruits" (broadly defined to include grains and various pods) and the arrangement of flowers into clusters. The goal is to classify plants according to their anscestry. However, without a complete fossil record of anscestors, classification depends on assuming that plants with a similar flower structure had a more recent common anscestor than flowers with unlike structure. Thus, two plants with 4-petal flowers are more closely related than either is to a plant with 5-petal flowers (when degenerate petals are included). Only recently is plant DNA becoming involved in taxonomy. Gymnosperms (conifers, cycads, ginkgos) are a different subject. Thanks for the info. I'll take a look at it but it doesn't sound like what I need. Frequently, I encounter a plant out in the woods and wonder what it is. All I have to work with is the leaf. I don't know what its seeds or blooms look like. Perhaps some university has the database that will help. |
#4
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Actually, you're in luck! There are several university based weed and
plant ID databases that cover hundreds of species and allow you to select plant features interactively. If you look up the EWIRM database you can find them listed by state or province. Several name or keyword search databases are also listed on EWIRM which cover many more plant species (thousands). Best of luck on your plant ID quest. _______ EWIRM: Nature makes plants, humans make weeds! |
#5
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raycruzer wrote: Actually, you're in luck! There are several university based weed and plant ID databases that cover hundreds of species and allow you to select plant features interactively. If you look up the EWIRM database you can find them listed by state or province. Several name or keyword search databases are also listed on EWIRM which cover many more plant species (thousands). Thank you. I will check out EWIRM. |
#6
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"Stubby" wrote in message ... David Ross wrote: Stubby wrote: Is there a systematic list of plants that can be used for identification? Given I know things like leaf shape, arrangement of veins in the leaf, bark characteristics, branching, etc, is there an interactive database that gives me suggestions of the ID plus pictures? You might want to locate a copy of C. L. Porter's "Taxonomy of Flowering Plants" (W. H. Freeman, 1967). This covers the angiosperms, both dicots and monocots. The classification of angiosperms is primarily based on the structure of individual flowers with secondary consideration given to "fruits" (broadly defined to include grains and various pods) and the arrangement of flowers into clusters. The goal is to classify plants according to their anscestry. However, without a complete fossil record of anscestors, classification depends on assuming that plants with a similar flower structure had a more recent common anscestor than flowers with unlike structure. Thus, two plants with 4-petal flowers are more closely related than either is to a plant with 5-petal flowers (when degenerate petals are included). Only recently is plant DNA becoming involved in taxonomy. Gymnosperms (conifers, cycads, ginkgos) are a different subject. Thanks for the info. I'll take a look at it but it doesn't sound like what I need. Frequently, I encounter a plant out in the woods and wonder what it is. All I have to work with is the leaf. I don't know what its seeds or blooms look like. Perhaps some university has the database that will help. Wouldn't a book be more useful in the woods than a computer? Or....I'm old fashioned, which is a distinct possibility. |
#7
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Of course, there are several great books on weeds with beautiful
pictures that are available and very helpful, as well. There are also several CDs with software that help you select plant features interactively. If you want to go hi tech, you can load a CD into your laptop and carry it into the the woods? Also, don't forget to bring your GPS, as well, to note the location of important species! _______ EWIRM: Ergonica Weed Identification Reference Matrix |
#8
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raycruzer wrote: Of course, there are several great books on weeds with beautiful pictures that are available and very helpful, as well. There are also several CDs with software that help you select plant features interactively. If you want to go hi tech, you can load a CD into your laptop and carry it into the the woods? Also, don't forget to bring your GPS, as well, to note the location of important species! _______ EWIRM: Ergonica Weed Identification Reference Matrix My interest is not limited to just weeds. Whenever I'm hiking, I carry a cell phone and a GPS. But, sigh, it doesn't help. We came across a campfire in a State forest that had not been put out and was smoking and spreading. I called fire departments in 3 surrounding towns before one would accept the job. I told them my lat-long and they said something like, "Fine. But WHERE are you?" |
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