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Need help with identification? Try:
Plants of Washington Image Collection
| Scientific Name | Noxious Weed Class |
Phenology* |
Collector** |
Abutilon theophrasti |
A |
7-11 |
|
Aegilops cylindrica |
C |
5-11 |
|
Alhagi maurorum |
B |
8-9 |
|
Amorpha fruticosa |
B |
5-8 |
|
Ambrosia tomentosa |
Monitor |
6-7 |
|
Carduus nutans |
B |
6-9 |
|
| Centaurea diffusa | B |
7-10 |
|
| Centaurea stoebe | B |
7-10 |
|
Centaurea solstitialis |
B |
7-10 |
|
Chondrilla juncea |
B |
7-10 |
|
Conium maculatum |
C |
4-10 |
|
Convolvulus arvensis |
C |
5-10 |
|
| Cuscuta approximata | C |
7-9 |
|
| Cynoglossum officinale | B |
5-7 |
|
| Cyperus esculentus | B |
8-10 |
|
Daucus carota |
B |
5-10 |
|
| Epilobium hirsutum | C |
7-10 |
|
Eruca vesicaria |
Monitor |
3-6 |
|
| Euphorbia esula | B |
5-7 |
|
Gypsophila paniculata |
C |
6-9 |
|
Hemizonia pungens |
C |
8-10 |
|
| Hibiscus trionum | Monitor |
9-10 |
|
| Hieracium aurantiacum | B |
5-9 |
|
| Hypericum perforatum | C |
6-10 |
|
| Kochia scoparia | B |
9-12 |
|
Linaria dalmatica |
B |
5-9 |
|
Lythrum salicaria |
B |
7-9 |
|
Onopordum acanthium |
B |
6-9 |
|
| Phalaris arundinacea | C |
5-10 |
|
| Polygonum cuspidatum | B |
8-9 |
|
| Sonchus arvensis | B |
7-9 |
|
| Sorghum halepense | A |
7-9 |
|
| Sphaerophysa salsula | B |
5-6 |
|
Tamarix ramosissima |
B |
5-6 |
|
Tanacetum vulgare |
C |
7-9 |
|
| Typha angustifolia | Monitor |
8-9 |
* 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