






FRIENDS OF THE DUNES
A Photographic Guide to Plants of
Humboldt Bay Dunes and Wetlands
Compiled by Gordon Leppig and Andrea Pickart
Release 2.0
April 2018
List by Genus: Letters A-H
Abies | Abronia | Acer | Achillea | Acmispon | Agrostis | Aira | Allotropa |Alnus | Ambrosia |
Ammophila | Anaphalis | Angelica | Anthoxanthum | Aphanes | Arbutus | Arctostaphylos |
Arctotheca | Armeria | Artemisia | Athyrium | Atriplex | Avena | Azolla | Baccharis | Bellardia |
Bolboschoenus | Brassica | Briza | Bromus | Cakile | Calamagrostis | Calandrinia | Callitriche |
Calypso | Calystegia | Camissoniopsis | Capsella | Cardamine | Cardionema | Carex | Carpobrotus |
Castilleja | Cerastium | Chamerion | Chimaphila | Chloropyron | Cicuta | Cirsium | Clarkia |
Claytonia | Clinopodium | Coincya | Corethrogyne | Cortaderia | Cotoneaster | Cotula | Crassula |
Crocosmia | Cryptantha​ | Cuscuta | Cynodon | Cynosurus | Cyperus | Cytisus | Dactylis | Daucus |
Deschampsia | Distichlis | Dryopteris | Eleocharis | Elymus | Epilobium | Equisetum | Erigeron |
Eriogonum | Erodium | Erysimum | Eschscholzia | Festuca | Fragaria | Frangula | Galium |
Gamochaeta | Garrya | Gaultheria | Geranium | Gilia | Glehnia | Gnaphalium | Goodyera |
Grindelia | Hedera | Hesperevax | Hesperocyparis | Hieracium | Hippuris | Hirschfeldia | Holcus |
Hordeum | Hydrocotyle | Hypericum | Hypochaeris
Status: Conservation concern (C); Exotic (E); Invasive (I); California Native (N)
​
Habitat: Dune mat (DM), Dune scrub (DS), Dune swale (SW), Coniferous dune forest (CDF), Riparian forest (RF), Freshwater marsh (FM), Freshwater swamp (FS), Freshwater marsh (FM), Open water (OW), Brackish marsh (BM), Salt marsh (SM), Mudflat (MF) Agricultural wetland (AW).
​
* This vascular plant list for Humboldt Bay dunes and wetlands is based on collections made by the authors primarily between 2001 and 2008.
Please email comments, corrections, or proposed additions to andrea_pickart@fws.gov.
Nomenclature follows the Jepson Manual, Higher Plants of California, Second edition (U.C. Press 2012).
​
Scientific Name
Abies grandis

Common Name
grand fir
Close-up

Status
N
Occurs
HBNWR, Lanphere, Ma-le'l
Habitat
CDF, RF
Other
N/A

Scientific Name
Abronia latifolia

Common Name
yellow sand verbena
Close-up

Status
N
Occurs
HBNWR, Lanphere, Ma-le'l
Habitat
DM
Other
N/A

Scientific Name
Abronia umbellata var. breviflora

Common Name
pink sand verbena
Close-up

Status
N, C
Occurs
HBNWR, Lanphere, Ma-le'l
Habitat
DM
Other
N/A

Scientific Name
Acer macrophyllum

Common Name
big leaf maple
Close-up

Status
N
Occurs
HBNWR
Habitat
FS
Other
N/A

Scientific Name
Achillea millefolium

Common Name
common yarrow
Close-up

Status
N
Habitat
DM, CDF, SW

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A
Scientific Name
Acmispon americanus var. americanus

Common Name
American bird's-foot trefoil
Close-up

Status
N
Habitat
SW, DM

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A
Scientific Name
Acmispon parviflorus

Common Name
small-flowered lotus
Close-up

Status
N
Habitat
DM, SW

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A
Scientific Name
Agrostis hallii

Common Name
Hall's bentgrass
Close-up

Status
N
Habitat
CDF

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A
Scientific Name
Agrostis hallii

Common Name
Hall's bentgrass
Close-up

Status
N
Habitat
CDF

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A
Scientific Name
Agrostis microphylla

Common Name
little-leaf bentgrass
Close-up

Status
N
Habitat
SW

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A
Scientific Name
Agrostis stolonifera

Common Name
creeping bentgrass
Close-up

Status
E, I
Habitat
BM, AW, FM

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A
Scientific Name
Aira caryophyllea

Common Name
silver hairgrass
Close-up

Status
E, I
Habitat
DM, DS, SW

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A
Scientific Name
Aira praecox

Common Name
yellow hairgrass
Close-up

Status
E, I
Habitat
DM, DS, SW

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A
Scientific Name
Allotropa virgata

Common Name
sugar-stick
Close-up

Status
N
Habitat
CDF

Occurs
HBNWR, Lanphere, Ma-le'l
Other
N/A