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Home > Invasive Species

Collections Needed

Need help with identification?  Try:

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Plants of Washington Image Collection

Whatcom County (47 taxa)

Scientific Name
Noxious Weed Class
Phenology*
Collector**  

Abutilon theophrasti

A
7-11
   

Anchusa officinalis

B
5-10
   

Anthriscus sylvestris

B
5-8
   

Buddleja davidii

C
7-10
James Duemmel  

Cardaria pubescens

C
5-8
   

Carduus nutans

B
6-9
   

Centaurea nigra

B
5-10
   

Centaurea jacea

B
8-9
   

Centaurea stoebe

B
7-10
Peter Zika  

Centaurea macrocephala

A
6-8
   

Centaurea × moncktonii

B
8-9
   

Cirsium arvense

C
7-9
   

Cirsium vulgare

C
7-10
   

Clematis vitalba

C
7-10
   

Conium maculatum

C
4-10
   

Cytisus scoparius

B
3-10
   

Daucus carota

B
5-10
   

Echium vulgare

B
7-10
   

Galega officinalis

A
8-9
   

Heracleum mantegazzianum

A
6-7
   

Hieracium caespitosum

B
5-8
Ben Legler  

Hieracium ×floribundum

A
6-8
   

Hieracium aurantiacum

B
5-9
   

Hypericum perforatum

C
6-10
   

Hypochaeris radicata

B
4-10
David Giblin  

Impatiens glandulifera

B
7-10
Ben Legler, Peter Zika  

Iris pseudacorus

C
5-10
Cheryl Lowe  

Kochia scoparia

B
9-12
   

Linaria dalmatica

B
5-9
Ben Legler  

Lythrum salicaria

B
7-9
   

Myriophyllum spicatum 

B
8-10
Ben Legler  

Onopordum acanthium

B
6-9
   

Polygonum cuspidatum 

B
8-9
   

Polygonum ×bohemicum

B
8-9
Peter Zika  

Polygonum sachalinense

B
7-10
   

Polygonum polystachyum

B
8-10
   
Potentilla recta
B
6-8
   

Ranunculus ficaria

Monitor
Kathryn Beck, James Duemmel  

Rorippa nasturtium-aquaticum

Monitor
4-9
   

Silene latifolia subsp. alba

C
4-8
   

Silybum marianum

A
6-10
   

Solanum rostratum

A
8-9
   

Sonchus arvensis

B
7-9
James Duemmel  

Spartium junceum

A
6-11
   

Tamarix ramosissima

B
5-6
   

Tanacetum vulgare

C
7-9
James Duemmel  

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