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Earthshare of Washington

Home > Invasive Species

Collections Needed

Need help with identification? Try:

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Plants of Washington Image Collection

Klickitat County (46 taxa)

Scientific Name
Noxious Weed Class
Phenology*
Collector**

Adonis annua

Monitor
5-6
 

Aegilops cylindrica

C
5-11
 

Amorpha fruticosa

B
5-8
 

Anchusa arvensis

B
5-6
 

Artemisia absinthium

C
7-10
 

Cardaria draba

C
5-6
 

Cardaria pubescens

C
5-8
 

Carduus acanthoides

B
6-9
 
Centaurea nigrescens
A
8-9
 

Centaurea nigra

B
5-10
 
Centaurea jacea
B
8-9
 

Centaurea macrocephala

A
6-8
 

Centaurea × moncktonii

B
8-9
 

Cirsium vulgare

C
7-10
 

Conium maculatum

C
4-10
 

Cyperus esculentus

B
8-10
 

Daucus carota

B
5-10
 

Euphorbia esula

B
5-7
 

Euphorbia myrsinites

B
5-9
 

Gypsophila paniculata C

C
6-9
 

Hedera helix

C
9-5
 

Hedera hibernica

C
10-5
 

Hemizonia pungens

C
8-10
 

Heracleum mantegazzianum

A
6-7
 

Hibiscus trionum

Monitor
9-10
 

Hieracium caespitosum

B
5-8
 

Hieracium pilosella

B
5-6
 
Hieracium aurantiacum
B
5-9
 

Linaria vulgaris

C
6-8
 

Lythrum salicaria

B
7-9
 

Onopordum acanthium

B
6-9
 

Picris hieracioides

B
7-9
 

Polygonum cuspidatum 

B
8-9
 

Polygonum sachalinense

B
7-10
 

Proboscidea louisianica

Monitor
8-10
 

Salvia aethiopis

A
6
 

Salvia sclarea

A
7-10
 

Senecio jacobaea

B
7-10
 

Senecio vulgaris

C
3-12
 

Silene latifolia subsp. alba

C
4-8
 

Silybum marianum

A
6-10
 

Solanum rostratum

A
8-9
 
Sorghum halepense
A
10
 

Tanacetum vulgare

C
7-9
 

Tripleurospermum inodorum

C
5-10
 

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