Flora

Plant species diversity
Simplified schematic of an island's flora - all its plant species, highlighted in boxes.

In botany, flora (plural: floras or florae) has two meanings: a flora (with a lower case 'f') refers to the plant life occurring in a particular region, generally the naturally occurring or indigenous plant life, while a Flora (with a capital 'F') refers to a book or other work describing a flora and including aids for the identification of the plants it contains such as botanical keys and line drawings that illustrate the characters that distinguish the different plants. Floristics is the study of floras, including the preparation of Floras.

The term flora comes from Latin language Flora, the goddess of flowers in Roman mythology. The corresponding term for animal life is fauna. Flora, fauna and other forms of life such as fungi are collectively referred to as biota. Some classic and modern floras are listed below.

Contents

Flora classifications

Plants are grouped into floras based on region, period, special environment, or climate. Regions can be geographically distinct habitats like mountain vs. flatland. Floras can mean plant life of an historic era as in fossil flora. Lastly, floras may be subdivided by special environments:

Bacterial organisms are sometimes included in a flora[1][2], and sometimes the terms bacterial flora and plant flora are used separately.

Flora treatises

Floristic regions in Europe according to Wolfgang Frey and Rainer Lösch
Plants
A fossil leaf from the extinct Comptonia columbiana, 48.5 million years old. Klondike Mountain Formation, Republic, Ferry County, Washington, USA. Stonerose Interpretive Center.

Traditionally floras are books, but some are now published on CD-ROM or websites. The area that a flora covers can be either geographically or politically defined. Floras usually require some specialist botanical knowledge to use with any effectiveness.

It is said that the Flora Sinensis by the Polish Jesuit Michał Boym was the first book that used the name "Flora" in this meaning, a book covering the plant world of a region.[3] However, despite its title it covered not only plants, but also some animals of the region.

A flora often contains diagnostic keys. Often these are dichotomous keys, which require the user to repeatedly examine a plant, and decide which one of two alternatives given in the flora best applies to the plant.

A compendium of world floras has been compiled by David Frodin.[4]

Classic floras

Europe
India
Indonesia
China
Americas

Modern floras

Americas

Caribbean
Central & South America
North America

Asia

Taxus chinensis, Chinese Yew tree. Morton Arboretum
China and Japan
Southeast Asia
Indian region and Sri Lanka
Middle East and western Asia

Australia

A closing venus fly trap.

Pacific Islands

Europe

British Isles

Africa and Madagascar

Flora on Wikipedia

An aloe vera plant.
Blueberry plant with berries.

Wikipedia has the following mainly flora categories:

BlankMap-World5.svg
Australasia
Africa
Antarctica
Asia
Europe
South
America
North
America

See also

  • Biome — a major regional group of distinctive plant and animal communities.
  • Vegetation — a general term for the plant life of a region.
  • Fauna
  • Flora (microbiology)
  • Fauna and Flora Preservation Society
  • Herbal
  • Horticultural flora
  • Pharmacopoeia


References

  1. http://webster.com/cgi-bin/dictionary?va=flora
  2. http://biology.usgs.gov/s+t/SNT/noframe/zy198.htm#F
  3. 3.0 3.1 Flora Sinensis (access to the facsimile of the book, its French translation, and an article about it)
  4. Frodin, David G. 2001. Guide to Standard Floras of the World. Second edition. Cambridge: Cambridge University Press. ISBN 9780521790772.

External links