Lassen Volcanic National Park
Families: 83.
Genera: 343.
Species: 799.
Total Taxa: 829.
Dysphania botrys
Jerusalem-Oak
Dysphania pumilio
Clammy Wormseed
Monolepis nuttalliana
Nuttall's Poverty-Weed
Allium obtusum
Red Sierran Onion
Allium parvum
Dwarf Onion
Allium platycaule
Flat-Stem Onion
Allium validum
Tall Swamp Onion
Cicuta douglasii
Western Water-Hemlock
Heracleum maximum
American Cow-Parsnip
Ligusticum grayi
Sheep Wild Lovage
Osmorhiza berteroi
Mountain Sweet-Cicely
Osmorhiza occidentalis
Sierran Sweet-Cicely
Oxypolis occidentalis
Western Cowbane
Perideridia bolanderi
Bolander's Yampah
Perideridia howellii
Howell's Yampah
Perideridia lemmonii
Lemmon's Yampah
Perideridia parishii
Parish's Yampah
Pteryxia terebinthina var. terebinthina
Turpentine Spring-Parsley
Sanicula graveolens
Sierran Black-Snakeroot
Sanicula tuberosa
Turkey-Pea
Sium suave
Hemlock Water-Parsnip
Sphenosciadium capitellatum
Swamp Whiteheads
Asclepias cordifolia
Heart-Leaf Milkweed
Asclepias speciosa
Showy Milkweed
Cycladenia humilis
Sacramento Waxy-Dogbane
Lemna turionifera
Turion Duckweed
Spirodela punctata
Dotted Duckmeat
Dichelostemma congestum
Ookow
Hastingsia alba
White Rush-Lily
Maianthemum racemosum
Feathery False Solomon's-Seal
Maianthemum stellatum
Starry False Solomon's-Seal
Triteleia hyacinthina
Fool's-Onion
Triteleia montana
Mountain Triplet-Lily
Adenocaulon bicolor
American Trailplant
Ageratina occidentalis
Western Snakeroot
Agoseris aurantiaca
Orange-Flower Goat-Chicory
Agoseris glauca
Pale Goat-Chicory
Agoseris grandiflora
Large-Flower Goat-Chicory
Agoseris heterophylla
Annual Goat-Chicory
Agoseris retrorsa
Spear-Leaf Goat-Chicory
Anaphalis margaritacea
Pearly-Everlasting
Antennaria corymbosa
Flat-Top Pussytoes
Antennaria dimorpha
Cushion Pussytoes
Antennaria geyeri
Pinewoods Pussytoes
Antennaria media
Rocky Mountain Pussytoes
Antennaria rosea
Rosy Pussytoes
Antennaria rosea subsp. confinis
rosy pussytoes
Arnica chamissonis
Leafy Leopardbane
Arnica cordifolia
Heart-Leaf Leopardbane
Arnica dealbata
Mock Leopardbane
Arnica discoidea
Rayless Leopardbane
Arnica fulgens
Shining Leopardbane
Arnica longifolia
Spear-Leaf Leopardbane
Arnica mollis
Cordilleran Leopardbane
Arnica nevadensis
Sierran Leopardbane
Artemisia arbuscula
Dwarf Sagebrush
Artemisia douglasiana
Douglas' Wormwood
Artemisia tridentata
Big Sagebrush
Artemisia tridentata subsp. tridentata
basin big sagebrush
Aster alpigenus
Tundra Mountaincrown
Balsamorhiza sagittata
Arrow-Leaf Balsamroot
Bidens cernua
Nodding Burr-Marigold
Brickellia grandiflora
Tassel-Flower Brickellbush
Brickellia greenei
Mountain Brickellbush
Chaenactis douglasii
Dusty-Maiden
Chaenactis douglasii var. douglasii
Douglas' dustymaiden
Chaenactis nevadensis
Northern Sierran Pincushion
Cirsium andersonii
Rose Thistle
Cirsium douglasii
Douglas' Thistle
Cirsium scariosum
Meadow Thistle
Cirsium vulgare
Bull Thistle
Conyza canadensis
Canadian Horseweed
Crepis acuminata
Long-Leaf Hawk's-Beard
Crepis capillaris
Smooth Hawk's-Beard
Crepis monticola
Mountain Hawk's-Beard
Crepis occidentalis
Large-Flower Hawk's-Beard
Dieteria canescens
Hoar False Tansy-Aster
Ericameria bloomeri
Rabbitbush Heath-Goldenrod
Ericameria greenei
Greene's Heath-Goldenrod
Ericameria nauseosa
Rubber-Rabbitbrush
Ericameria parryi
Parry's Rubber-Rabbitbrush
Erigeron acris
Bitter Fleabane
Erigeron barbellulatus
Shining Fleabane
Erigeron breweri
Brewer's Fleabane
Erigeron compositus
Dwarf Mountain Fleabane
Erigeron coulteri
Large Mountain Fleabane
Erigeron elegantulus
Blue Dwarf Fleabane
Erigeron inornatus
Lava Rayless Fleabane
Erigeron lassenianus
Mt. Lassen Fleabane
Erigeron peregrinus
Subalpine Fleabane