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Seeds of invasive plants

Introduction

This key is an identification tool for seeds of invasive plants. The choice of species was based on an extensive survey of seeds and seed mixtures in trade, where the seeds of these invasive species were found as contamination.

A total of 143 species is included. All features are illustrated with botanical drawings so that no knowledge of botanical terms is needed, basic knowledge of plant morphology, however, is helpful. The keys link to complete species descriptions on the Q-bank – Plants website. All species are well illustrated by photographs showing distinguishing characteristics or invaded sites. This key is also available in French and Dutch.

Q-bank

Q-bank – Comprehensive databases on plant pests and diseases covers the following organism groups that contain quarantine organisms:

  • Fungi
  • Bacteria
  • Invasive Plants
  • Nematodes
  • Arthropods
  • Phytoplasma’s
  • Viruses and viroids

The databases are curated by internationally known specialists and contain specimen-based information including molecular data. The website offers the possibility to blast, in single- or multi-locus mode, sequences for identification.

Posted By: Site Admin Last Updated: 02/11/2017 Views: 1778
Key Author(s): Netherlands Centre for Biodiversity Naturalis (section NHN), Leiden & the Plant Protection Service, Wageningen Key Publisher: Lucidcentral.org Key Version: September 2017
Soil Microarthropods

This is a key to the major lineages (Classes and Orders) of soil-inhabiting microarthropods. For our purposes this means that arthropods < 1 cm in length as adults are included.

Posted By: Site Admin Last Updated: 01/06/2011 Views: 7529
Key Author(s): David Walter and Heather Proctor Key Publisher: The University of Queensland Key Version: v1.0
South Australian Pasture Selection key

Key for South Australia

Posted By: Mr. Stuart Brown Last Updated: 22/10/2008 Views: 1262
Key Author(s): Stuart Brown Key Publisher: CSIRO Key Version: 1.0
Staphylinidae Subfamilies of North America North of Mexico

The rove beetles (Coleoptera: Staphylinidae) are the largest beetle family with over 52,000 species worldwide. The family is divided into 32 subfamilies, 26 of which are found in the new world. The purpose of this key is to facilitate identification of adult North American staphylinids to subfamily.

The key is largely based on Moore and Legner (1979), Newton et al. (2001), and O’Keefe (2001).

Questions, comments, corrections, etc. should be emailed to Mike at  spongymeosphyll@gmail.com.

Posted By: Site Admin Last Updated: 20/03/2015 Views: 688
Key Author(s): Michael L. Ferro, Margaret K. Thayer, Alfred F. Newton, Jr., and Jong-Seok Park. Key Version: 1.0
Stink bugs of Australia

How to identify the Pentatomidae of Australia

Posted By: Site Admin Last Updated: 27/04/2016 Views: 705
Key Author(s): Gerry Cassis, Emma Betts and Michael Elliott Key Publisher: Australian Museum Key Version: 1.0
Terrestrial Mollusc Tool

The Terrestrial Mollusc Tool was specifically designed to assist in the identification of adult terrestrial slugs and snails of agricultural importance. The tool also includes species of quarantine significance as well as invasive and contaminant mollusc species commonly intercepted at U.S. ports of entry. This Lucid-based identification tool specifically targets federal, state and other agencies or organizations within the U.S. that are concerned with the detection and identification of molluscs of significance. This tool includes 33 families and 128 species. This resource also includes an interactive identification key, comparison chart, fact sheets, biological and ecological notes, a dissection tutorial, a glossary of commonly used terms, and a list of useful links and references. It should be noted that this dynamic tool is not inclusive of all mollusc pests, as new species of interest arise almost daily.

Posted By: Matthew Trice Last Updated: 14/09/2011 Views: 2691
Key Author(s): Jodi White Key Version: v1.0
The Key to Pythium species

The key is presented as a guide to identifying Pythium to the species level. It is a modification of that created by Anna van der Plaats-Niterink (Van der Plaats-Niterink, A. J. 1981. Monograph of the genus Pythium. Studies in Mycology. Baarn, Centraalbureau voor Schimmelcultures. Monograph No. 21:242). Some but not all species of Pythium are included. This key is only a guide and diagnostic tool to assist in the identification of Pythium species. To learn more about identifying Pythium species, culturing Pythium, and Pythium in general visit https://plantpath.psu.edu/Pythium and work through the Module set. 

Be flexible in your interpretation of what you observe and observe cultures over time. As you gain experience through looking at many different Pythium cultures, you will begin to be able to differentiate sporangia from oogonia, slightly inflated filamentous sporangia from hyphae, and recognize proliferating sporangia. At first, just reading descriptions is confusing, but the more cultures you observe the process will become much easier.

The key was built using the Lucid Builder program. When you open the key, the window is divided into four sections: features available, features chosen, entities remaining and entities discarded. The culture characteristics are present in the Lucid key as “features”. Pythium species are present as “entities”.

As you look at Pythium cultures, check off the characters you observe on the character checklist. Check off characters by expanding the options beneath each main heading of the “features available” section and click on the empty box next to the character you have observed in your culture. When a character is selected, a check mark will be placed next to that character in the “features available” section. These selected characters will also be copied into the “features chosen” section. In order remove a feature chosen, simply click the checked box next to the unwanted character, and it will become unchecked again.  Lastly, as you select the characters you are observing, Pythium species are discarded into the “entities discarded” section, leaving fewer and fewer “entities remaining,” or possible Pythium species.

To help you identify Pythium species, images of the characters are available in the Lucid key. To view these images, make sure that “image thumbnails” is selected under the view tab. Simply expand the contents of the “features available” section and click on the thumbnails to enlarge the images. 

Be flexible in using the key. If you are not certain of a characteristic, select one option for that characteristic and see where the key takes you. When you have eliminated most species, examine the description of the species to which you are led and see if it fits. If the descriptions do not match what you have observed, go back and select a different option for that characteristic and other questionable characters and examine the description of the species to which you come.

Authors:

Gary W. Moorman, Ph.D.
Department of Plant Pathology and Environmental Microbiology
The Pennsylvania State University
111 Buckhout Laboratory
University Park, PA 16802
Phone: 814-863-7401
Email: gmoorman@psu.edu

Sara May
Department of Plant Pathology and Environmental Microbiology
The Pennsylvania State University
220 Buckhout Laboratory
University Park, PA 16802
Phone: 814-865-2204
Email: srm183@psu.edu

Kathleen M. Ayers
Department of Plant Pathology and Environmental Microbiology
The Pennsylvania State University
220 Buckhout Laboratory
University Park, PA 16802
Email: kma5209@psu.edu

Posted By: Site Admin Last Updated: 21/05/2014 Views: 767
Key Author(s): Gary W. Moorman, Ph.D., Sara May, Kathleen M. Ayers Key Version: 1.0
The moss genus Bryum in Switzerland

Taxonomic scope: Bryophytes

Description: The genus Bryum is one of the most challenging genera of bryophytes. This key contains 47 species known from Switzerland and adjacent countries. Nearly all characters are illustrated with microscopical photographs.

Posted By: Site Admin Last Updated: 29/04/2015 Views: 6280
Key Author(s): H. Hofmann & K. Lotterman Key Version: 2.0
The moss genus Orthotrichum in Switzerland

Taxonomic scope: Bryophytes

Description: The moss genus Orthotrichum is of particular interest in monitoring air pollution. This key contains 31 species known from Switzerland and adjacent countries. Nearly all characters are illustrated with microscopical photographs.

For more information: http://www.swissbryophytes.ch/content/schluessel12

Posted By: Site Admin Last Updated: 08/03/2016 Views: 1147
Key Author(s): H. Hofmann, M. Lüth & A. Büschlen Key Version: 1.0
Thrips of Brazil

The Thysanoptera fauna of Brazil is one of the most diverse in the world. More than 530 species were described based on material collected in Brazilian territory and approximately 700 species are recorded from this country. This number represents more than 10% of the species described in the Thysanoptera. Besides the large number of species, the Brazilian fauna is also diverse in terms of ecology and life histories.

In this identification system, the user can identify the 6 Thysanoptera families that occur in Brazil.

Posted By: Site Admin Last Updated: 15/02/2018 Views: 9
Key Author(s): Adriano Cavalleri, Laurence A. Mound, Mariana F. Lindner, Marcos Botton, Milton de Souza Mendonça Jr. Key Version: Feb 2018
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