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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 |
|
Amorpha fruticosa |
B |
5-8 |
|
Anthriscus sylvestris |
B |
5-8 |
|
| Carduus pycnocephalus | A |
5-6 |
|
| Centaurea × moncktonii | B |
8-9 |
|
| Centaurea stoebe | B |
7-10 |
|
| Centaurea jacea | B |
8-9 |
|
| Cirsium arvense | C |
7-9 |
|
Cirsium vulgare |
C |
7-10 |
|
Clematis vitalba |
C |
7-10 |
|
| Convolvulus arvensis | C |
5-10 |
|
Cytisus scoparius |
B |
3-10 |
|
Daucus carota |
B |
5-10 |
|
| Echium vulgare | B |
7-10 |
|
Egeria densa |
B |
5-10 |
|
Eichhornia crassipes |
Monitor |
8-10 |
|
| Euphorbia esula | B |
5-7 |
|
| Heracleum mantegazzianum | A |
6-7 |
|
Hypochaeris radicata |
B |
4-10 |
|
Impatiens glandulifera |
B |
7-10 |
|
| Lepidium latifolium | B |
5-9 |
|
| Leucanthemum vulgare | B |
5-9 |
|
| Linaria vulgaris | C |
6-8 |
|
| Lythrum salicaria | B |
7-9 |
|
| Myriophyllum spicatum | B |
8-10 |
|
Myriophyllum aquaticum |
B |
7-10 |
|
Nymphoides peltata |
B |
8-10 |
|
Phalaris arundinacea |
C |
5-10 |
|
Polygonum baldschuanicum |
Monitor |
5-10 |
|
Polygonum sachalinense |
B |
7-10 |
|
Potentilla recta |
B |
6-8 |
|
| Pueraria montana var. lobata | A |
7-9 |
|
| Rorippa sylvestris | Monitor |
7-8 |
|
| Rorippa nasturtium-aquaticum | Monitor |
4-9 |
|
Senecio jacobaea |
B |
7-10 |
|
Solanum rostratum |
A |
8-9 |
|
Solanum elaeagnifolium |
A |
5-10 |
|
Sonchus arvensis |
B |
7-9 |
|
Sorghum halepense |
A |
10 |
|
Tanacetum vulgare |
C |
7-9 |
|
| Verbascum thapsus | Monitor |
5-10 |
* 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