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Earthshare of Washington
Need help with identification? Try:
Plants of Washington Image Collection
| Scientific Name | Noxious Weed Class |
Phenology* |
Collector** |
Aegilops cylindrica |
C |
5-11 |
|
Amorpha fruticosa |
B |
5-8 |
|
| Artemisia absinthium | C |
7-10 |
|
| Bryonia alba | B |
5-10 |
|
Cardaria draba |
C |
5-6 |
|
| Carduus nutans | B |
6-9 |
|
| Centaurea jacea | B |
8-9 |
|
| Centaurea repens | B |
6-10 |
|
Centaurea stoebe |
B |
7-10 |
|
| Cirsium arvense | C |
7-9 |
|
Convolvulus arvensis |
C |
5-10 |
|
| Cuscuta approximata | C |
7-9 |
|
Cynoglossum officinale |
B |
5-7 |
|
| Cyperus esculentus | B |
8-10 |
|
Euphorbia esula |
B |
5-7 |
|
Euphorbia myrsinites |
B |
5-9 |
|
Gypsophila paniculata |
C |
6-9 |
|
| Hieracium pilosella | B |
5-6 |
|
| Lepidium latifolium | B |
5-9 |
|
Leucanthemum vulgare |
B |
5-9 |
|
| Linaria dalmatica | B |
5-9 |
|
| Linaria vulgaris | C |
6-8 |
|
| Myriophyllum spicatum | B |
8-10 |
|
Onopordum acanthium |
B |
6-9 |
|
| Polygonum cuspidatum | B |
8-9 |
|
| Potentilla recta | B |
6-8 |
|
| Rorippa nasturtium-aquaticum | Monitor |
4-9 |
|
Secale cereale |
C |
5-8 |
|
| Solanum rostratum | A |
8-9 |
|
| Sonchus arvensis | B |
7-9 |
|
| Sorghum halepense | A |
10 |
|
Tanacetum vulgare |
C |
7-9 |
|
Verbascum thapsus |
Monitor |
5-10 |
|
Xanthium spinosum |
C |
7-9 |
* The numbers represent months of the year when the species has been collected, extracted from herbarium labels at WTU (with a few dates based on records at MO, NY, UC, and UBC).
On-line data sources for phenology:
MO: http://mobot.mobot.org/W3T/Search/vast.html
NY: http://sciweb.nybg.org/science2/vii2.asp
UBC: http://herbarium.botany.ubc.ca/herbarium_data/vascular/search.htm
UC: http://www.mip.berkeley.edu/www_apps/smasch/
WTU: http://biology.burke.washington.edu/herbarium/collections/vascular/basicsearch.php
** email wnps@wnps.org when you've made a collection and we will put your name onto the list, this will help us minimalize duplication of efforts. Use the email subject line: Herbarium Collection