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Nomenclature

Nomenclature. Nomenclature is the system of orderly classifying and naming Botanical Nomenclature is the system orderly classifying and naming plants Living creatures are divided into several Kingdoms  Plant Kingdom is our interest here. Nomenclature.

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Nomenclature

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  1. Nomenclature • Nomenclature is the system of orderly classifying and naming • Botanical Nomenclature is the system orderly classifying and naming plants • Living creatures are divided into several Kingdoms  Plant Kingdom is our interest here

  2. Nomenclature • Within the Plant Kingdom plants are divided into four principle subdivisions called divisions.

  3. Nomenclature - Divisions • Thallophytes (algae & fungi) • Bryophytes (mosses and liverworts) • Pteriodophytes (ferns; reproduce by means of spores) • Spermatophytes – (seed bearing plants; have true roots, stems, leaves & vascular system)

  4. Nomenclature – Spermatophytes Classes • Gymnosperm (conifers, Ginkgo) • Angiosperm (flowering plants) • Subclass Dicot – 2 cotyledons, flower parts generally in 5’s & network veination • Subclass Monocot – 1 cotyledon, flower parts generally in 3’s & parallel veination

  5. Nomenclature – Orders • The subclasses of Angiosperms are divided into orders, the names of which often terminate in –ales, as the Asterales.

  6. Nomenclature – Purple Coneflower • Kingdom  Plantae • Division  Spermatophytes • Class  Angiosperm • Subclass  Dicotyledonae • Order  Asterales • Family  Asteraceae • Genus  Echinacea • Species  purpurea

  7. Nomenclature – The Binomial System • The Binomial System: a 2 word scientific name; developed by Carl Von Linne (1737) Genus & specific epithet (species) • Each plant has only one valid Scientific Name!!!! • Names are given based on International Code of Botanical Nomenclature

  8. Nomenclature – The Binomial System • Genus  Generic name for a plant group (Quercus) • Specific epithet  Scientific name for one plant (alba) • Quercus alba (White Oak)

  9. Nomenclature – The Binomial System • Special divisions within a plant species: • Variety  A self perpetuating mutation or off-spring that differs significantly from parent species • Cultivar  A manmade and or man maintained offspring that differs significantly from parent species

  10. Nomenclature – The Binomial System • Scientific Names are descriptive and may describe a plant’s: • Habitat • Betula nigra = water • Physical characteristics (leaf, size, form, color, ect.) • Magnolia grandiflora = big flower

  11. Nomenclature – The Binomial System • Scientific Names are descriptive and may describe a plant’s: • Place of origin (geography) • Camellia japonica Japan • Ancient classical name • Lycopersicon esculentum • Commemorative • Ilex x attenuata ‘Fosterii’

  12. Nomenclature – The Common Name • Common names can vary from locality, person to person, ect. • Tulip poplar or yellow poplar or tulip tree??? • Tulip magnolia or saucer magnolia or tulip tree???

  13. Nomenclature – Rules for Writing • Genus  First letter is always capitalized and the name is underlined or italicized • Specific epithet  First letter is generally NOT capitalized, the name is underlined or italicized • Cornusflorida or Cornus florida

  14. Nomenclature – Rules for Writing • Cultivar  A cultivar name is capitalized and placed within single quotes • Cornus florida ‘Cherokee Chief’ • Variety  A variety name is preceded by var. and is underlined or italicized • Rudbeckia fulgida var.compacta

  15. Nomenclature – Rules for Writing • Intergeneric cross: A cross between 2 genera of plants… Rare… • xFatshedera lizei • Interspecific hybrids or interspecific cross: 2 plants in the same genus with different species: • Abelia x grandiflora

  16. "No occupation is so delightful to me as the culture of the earth and no culture comparable to that of the garden"- Thomas Jefferson

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