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Home >> Checklist: Lassen Volcanic National Park >> Previous version of Key >> Identification Key (new version): Lassen Volcanic National Park Filter/Display Options Family/Genus Filter: Sort by: Display Common Names Display images: Plant habit trees shrubs vines / lianas herbaceous ferns & allies grass-like aquatic & OBL wetland species special groups arums composites legumes milkweeds mints orchids spurges dicots monocots longevity annual or biennial perennial armature unarmed armed reproductive mode produces flowers, fruits, seeds produces spores Leaves arrangement/phyllotaxy basal alternate opposite whorled fascicled/clustered along stem blade division all simple deeply lobed or divided some or all fully compound Flower ovaries/pistils per flower 1 2-5 more than 5 Lassen Volcanic National Park Lassen Volcanic NP Resource Management Species Count: 793 Adoxaceae Sambucus canadensis Sambucus cerulea Sambucus racemosa Alismataceae Sagittaria cuneata Amaranthaceae Blitum nuttallianum Chenopodium atrovirens Dysphania botrys Dysphania pumilio Amaryllidaceae Allium campanulatum Allium obtusum Allium parvum Allium platycaule Allium validum Apiaceae Angelica breweri Cicuta douglasii Heracleum maximum Ligusticum grayi Osmorhiza berteroi Osmorhiza occidentalis Oxypolis occidentalis Perideridia bolanderi Perideridia howellii Perideridia lemmonii Perideridia parishii Pteryxia terebinthina Sanicula graveolens Sanicula tuberosa Sium suave Sphenosciadium capitellatum Apocynaceae Apocynum androsaemifolium Asclepias cordifolia Asclepias speciosa Cycladenia humilis Araceae Lemna trisulca Lemna turionifera Spirodela punctata Aristolochiaceae Asarum hartwegii Asparagaceae Camassia quamash Dichelostemma congestum Hastingsia alba Maianthemum racemosum Maianthemum stellatum Triteleia hyacinthina Triteleia montana Aspleniaceae Asplenium septentrionale Asteraceae Achillea millefolium Adenocaulon bicolor Ageratina occidentalis Agoseris aurantiaca Agoseris glauca Agoseris grandiflora Agoseris heterophylla Agoseris monticola Agoseris retrorsa Anaphalis margaritacea Antennaria corymbosa Antennaria dimorpha Antennaria geyeri Antennaria media Antennaria rosea Arnica chamissonis Arnica cordifolia Arnica dealbata Arnica discoidea Arnica fulgens Arnica longifolia Arnica mollis Arnica nevadensis Artemisia arbuscula Artemisia douglasiana Artemisia tridentata Aster alpigenus Aster breweri Aster yosemitanus Balsamorhiza sagittata Bidens cernua Brickellia grandiflora Brickellia greenei Chaenactis douglasii Chaenactis nevadensis Cirsium andersonii Cirsium douglasii Cirsium scariosum Cirsium vulgare Conyza canadensis Crepis acuminata Crepis capillaris Crepis monticola Crepis occidentalis Dieteria canescens Ericameria bloomeri Ericameria greenei Ericameria nauseosa Ericameria parryi Erigeron acris Erigeron barbellulatus Erigeron breweri Erigeron compositus Erigeron coulteri Erigeron elegantulus Erigeron inornatus Erigeron lassenianus Erigeron peregrinus Eriophyllum lanatum Eucephalus breweri Eurybia integrifolia Gnaphalium palustre Hazardia whitneyi Helenium bigelovii Helianthella californica Heterotheca breweri Hieracium albiflorum Hieracium bolanderi Hieracium gracile Hieracium horridum Hieracium scouleri Hulsea nana Lactuca serriola Leucanthemum vulgare Madia bolanderi Madia citrigracilis Madia elegans Madia glomerata Madia gracilis Madia minima Matricaria discoidea Micropus californicus Microseris nutans Packera cana Packera indecora Pseudognaphalium microcephalum Pseudognaphalium thermale Raillardella argentea Raillardella scaposa Senecio aronicoides Senecio fremontii Senecio hydrophilus Senecio pauciflorus Senecio scorzonella Senecio triangularis Solidago lepida Sonchus asper Stephanomeria lactucina Stephanomeria tenuifolia Symphyotrichum eatonii Symphyotrichum foliaceum Symphyotrichum frondosum Symphyotrichum spathulatum Taraxacum officinale Tragopogon dubius Wyethia mollis Athyriaceae Athyrium alpestre Athyrium filix-femina Betulaceae Alnus incana Betula glandulosa Boraginaceae Cryptantha affinis Cryptantha ambigua Cryptantha simulans Cryptantha torreyana Cynoglossum occidentale Hackelia californica Hackelia micrantha Hackelia nervosa Hackelia velutina Hesperochiron pumilus Hydrophyllum occidentale Mertensia ciliata Nama lobbii Nemophila pedunculata Nemophila spatulata Oreocarya sobolifera Phacelia frigida Phacelia hastata Phacelia hydrophylloides Phacelia mutabilis Phacelia procera Phacelia racemosa Plagiobothrys hispidus Plagiobothrys scouleri Brassicaceae Arabis breweri Arabis lemmonii Arabis lyallii Arabis platysperma Arabis rectissima Arabis sparsiflora Arabis suffrutescens Barbarea orthoceras Boechera retrofracta Capsella bursa-pastoris Cardamine bellidifolia Cardamine breweri Draba albertina Draba aureola Draba breweri Erysimum capitatum Lepidium heterophyllum Lesquerella occidentalis Phoenicaulis cheiranthoides Rorippa curvisiliqua Smelowskia ovalis Streptanthus tortuosus Subularia aquatica Turritis glabra Campanulaceae Campanula scabrella Downingia yina Heterocodon rariflorum Porterella carnosula Caprifoliaceae Lonicera cauriana Lonicera conjugialis Lonicera involucrata Symphoricarpos mollis Symphoricarpos rotundifolius Valeriana californica Caryophyllaceae Cerastium fontanum Eremogone congesta Eremogone kingii Sabulina nuttallii Sagina saginoides Scleranthus annuus Silene bernardina Silene douglasii Silene grayi Silene invisa Silene lemmonii Silene occidentalis Silene suksdorfii Spergularia rubra Stellaria borealis Stellaria calycantha Stellaria crispa Stellaria longipes Stellaria obtusa Celastraceae Parnassia californica Convolvulaceae Calystegia malacophylla Calystegia occidentalis Convolvulus arvensis Cuscuta californica Cornaceae Cornus sericea Cupressaceae Calocedrus decurrens Juniperus occidentalis Cyperaceae Carex abrupta Carex amplifolia Carex angustata Carex aquatilis Carex athrostachya Carex aurea Carex brainerdii Carex breweri Carex canescens Carex capitata Carex cusickii Carex deflexa Carex douglasii Carex echinata Carex feta Carex fracta Carex helleri Carex heteroneura Carex hoodii Carex illota Carex infirminervia Carex integra Carex jonesii Carex lasiocarpa Carex lemmonii Carex lenticularis Carex leporinella Carex limosa Carex luzulifolia Carex luzulina Carex mariposana Carex microptera Carex multicaulis Carex multicostata Carex nebrascensis Carex nervina Carex neurophora Carex nigricans Carex pachystachya Carex pellita Carex phaeocephala Carex praeceptorum Carex preslii Carex raynoldsii Carex rossii Carex scopulorum Carex simulata Carex specifica Carex spectabilis Carex straminiformis Carex subfusca Carex utriculata Carex vernacula Carex vesicaria Carex whitneyi Cyperus niger Cyperus squarrosus Dulichium arundinaceum Eleocharis acicularis Eleocharis bella Eleocharis macrostachya Eleocharis quinqueflora Eleocharis reverchonii Eriophorum gracile Rhynchospora alba Schoenoplectus acutus Schoenoplectus americanus Schoenoplectus subterminalis Scirpus congdonii Scirpus microcarpus Cystopteridaceae Cystopteris fragilis Dennstaedtiaceae Pteridium aquilinum Droseraceae Drosera anglica Drosera rotundifolia Dryopteridaceae Polystichum imbricans Polystichum kruckebergii Polystichum scopulinum Equisetaceae Equisetum arvense Equisetum laevigatum Ericaceae Allotropa virgata Arctostaphylos nevadensis Arctostaphylos patula Cassiope mertensiana Chimaphila menziesii Chimaphila umbellata Gaultheria humifusa Kalmia microphylla Kalmia polifolia Ledum glandulosum Orthilia secunda Phyllodoce breweri Pterospora andromedea Pyrola asarifolia Pyrola dentata Pyrola picta Sarcodes sanguinea Vaccinium caespitosum Vaccinium uliginosum Euphorbiaceae Croton setigerus Euphorbia crenulata Euphorbia maculata Euphorbia serpillifolia Fabaceae Lathyrus nevadensis Lotus crassifolius Lotus nevadensis Lotus oblongifolius Lupinus angustiflorus Lupinus arbustus Lupinus lepidus Lupinus lyallii Lupinus obtusilobus Lupinus polyphyllus Melilotus albus Melilotus indica Trifolium cyathiferum Trifolium hybridum Trifolium kingii Trifolium longipes Trifolium microcephalum Trifolium monanthum Trifolium repens Trifolium variegatum Trifolium wormskioldii Vicia americana Fagaceae Chrysolepis sempervirens Quercus kelloggii Quercus vaccinifolia Gentianaceae Gentiana newberryi Gentianella amarella Gentianopsis simplex Geraniaceae Erodium cicutarium Grossulariaceae Ribes cereum Ribes inerme Ribes montigenum Ribes nevadense Ribes roezlii Ribes viscosissimum Haloragaceae Myriophyllum sibiricum Myriophyllum spicatum Hydrocharitaceae Najas flexilis Hypericaceae Hypericum anagalloides Hypericum perforatum Hypericum scouleri Iridaceae Iris tenuissima Sisyrinchium bellum Sisyrinchium elmeri Sisyrinchium idahoense Isoetaceae Isoëtes bolanderi Isoëtes nuttallii Juncaceae Juncus acutus Juncus balticus Juncus bufonius Juncus drummondii Juncus effusus Juncus ensifolius Juncus hemiendytus Juncus howellii Juncus mertensianus Juncus nevadensis Juncus occidentalis Juncus orthophyllus Juncus parryi Luzula comosa Luzula divaricata Luzula subcongesta Lamiaceae Agastache parvifolia Lycopus uniflorus Mentha arvensis Monardella odoratissima Prunella vulgaris Scutellaria antirrhinoides Scutellaria nana Stachys ajugoides Stachys rigida Trichostema lanceolatum Trichostema oblongum Lentibulariaceae Utricularia intermedia Utricularia macrorhiza Utricularia minor Liliaceae Calochortus leichtlinii Calochortus minimus Calochortus nudus Erythronium purpurascens Fritillaria atropurpurea Lilium kelleyanum Lilium pardalinum Lilium washingtonianum Streptopus amplexifolius Limnanthaceae Floerkea proserpinacoides Linaceae Hesperolinon micranthum Linum lewisii Loasaceae Mentzelia dispersa Malvaceae Malva neglecta Sidalcea glaucescens Sidalcea oregana Melanthiaceae Veratrum californicum Xerophyllum tenax Zigadenus venenosus Menyanthaceae Menyanthes trifoliata Montiaceae Calandrinia ciliata Calyptridium monospermum Calyptridium umbellatum Claytonia lanceolata Claytonia nevadensis Claytonia palustris Claytonia rubra Lewisia nevadensis Lewisia triphylla Montia chamissoi Montia fontana Montia linearis Spraguea umbellata Nymphaeaceae Nuphar polysepala Onagraceae Chamaenerion angustifolium Circaea alpina Clarkia rhomboidea Epilobium anagallidifolium Epilobium brachycarpum Epilobium canum Epilobium ciliatum Epilobium densiflorum Epilobium glaberrimum Epilobium halleanum Epilobium hornemannii Epilobium minutum Epilobium obcordatum Epilobium oreganum Epilobium oregonense Gayophytum diffusum Gayophytum heterozygum Gayophytum humile Gayophytum racemosum Ludwigia palustris Taraxia subacaulis Taraxia tanacetifolia Ophioglossaceae Botrychium simplex Sceptridium multifidum Orchidaceae Cephalanthera austiniae Corallorhiza maculata Goodyera oblongifolia Listera convallarioides Piperia unalascensis Platanthera dilatata Platanthera sparsiflora Spiranthes porrifolia Orobanchaceae Boschniakia strobilacea Castilleja applegatei Castilleja arachnoidea Castilleja campestris Castilleja lassenensis Castilleja miniata Castilleja tenuis Cordylanthus bolanderi Orobanche fasciculata Orobanche pinorum Orobanche uniflora Orthocarpus cuspidatus Pedicularis attollens Pedicularis densiflora Pedicularis groenlandica Pedicularis semibarbata Paeoniaceae Paeonia brownii Papaveraceae Corydalis caseana Dicentra formosa Dicentra uniflora Phrymaceae Diplacus jepsonii Diplacus mephiticus Diplacus torreyi Erythranthe breweri Erythranthe guttata Erythranthe lewisii Erythranthe moniliformis Erythranthe moschata Erythranthe primuloides Erythranthe pulsiferae Erythranthe tilingii Pinaceae Abies concolor Abies magnifica Pinus albicaulis Pinus contorta Pinus jeffreyi Pinus lambertiana Pinus monticola Pinus ponderosa Pinus washoensis Pseudotsuga menziesii Tsuga mertensiana Plantaginaceae Callitriche palustris Collinsia parviflora Collinsia torreyi Gratiola ebracteata Linaria dalmatica Penstemon azureus Penstemon cinicola Penstemon davidsonii Penstemon deustus Penstemon gracilentus Penstemon heterodoxus Penstemon neotericus Penstemon newberryi Penstemon procerus Penstemon rydbergii Penstemon speciosus Plantago lanceolata Plantago major Veronica americana Veronica peregrina Veronica scutellata Veronica serpyllifolia Veronica wormskjoldii Poaceae Achnatherum lemmonii Achnatherum lettermanii Achnatherum nelsonii Achnatherum occidentale Agrostis exarata Agrostis gigantea Agrostis humilis Agrostis idahoensis Agrostis oregonensis Agrostis scabra Agrostis variabilis Alopecurus aequalis Alopecurus geniculatus Bromus carinatus Bromus ciliatus Bromus inermis Bromus marginatus Bromus orcuttianus Bromus suksdorfii Bromus tectorum Calamagrostis canadensis Cinna latifolia Dactylis glomerata Danthonia californica Danthonia unispicata Deschampsia cespitosa Deschampsia danthonioides Deschampsia elongata Dichanthelium acuminatum Elymus elymoides Elymus glaucus Elymus hansenii Elymus trachycaulus Elymus x hansenii Elymus × saundersii Festuca brachyphylla Festuca idahoensis Festuca occidentalis Festuca rubra Festuca subulata Glyceria borealis Glyceria striata Holcus lanatus Hordeum brachyantherum Hordeum jubatum Lolium perenne Lolium pratense Melica aristata Melica bulbosa Melica fugax Melica stricta Melica subulata Muhlenbergia andina Muhlenbergia filiformis Muhlenbergia jonesii Muhlenbergia richardsonis Panicum capillare Phleum alpinum Phleum pratense Poa annua Poa bolanderi Poa bulbosa Poa cusickii Poa palustris Poa pratensis Poa pringlei Poa wheeleri Taeniatherum caput-medusae Thinopyrum intermedium Torreyochloa erecta Torreyochloa pallida Trisetum canescens Trisetum spicatum Trisetum wolfii Vulpia microstachys Vulpia myuros Polemoniaceae Allophyllum integrifolium Collomia grandiflora Collomia larsenii Collomia linearis Collomia tinctoria Gilia capillaris Gilia leptalea Ipomopsis aggregata Ipomopsis congesta Leptosiphon harknessii Linanthus ciliatus Linanthus pungens Navarretia divaricata Navarretia intertexta Navarretia leucocephala Phlox diffusa Phlox gracilis Phlox muscoides Polemonium californicum Polemonium pulcherrimum Polygonaceae Bistorta bistortoides Eriogonum latens Eriogonum marifolium Eriogonum nudum Eriogonum ochrocephalum Eriogonum ovalifolium Eriogonum pyrolifolium Eriogonum rosense Eriogonum spergulinum Eriogonum umbellatum Eriogonum ursinum Oxyria digyna Persicaria amphibia Persicaria lapathifolia Polygonum arenastrum Polygonum davisiae Polygonum douglasii Polygonum minimum Polygonum phytolaccifolium Polygonum polygaloides Polygonum sawatchense Polygonum shastense Rumex acetosella Rumex californicus Rumex crispus Rumex mexicanus Rumex occidentalis Potamogetonaceae Potamogeton amplifolius Potamogeton foliosus Potamogeton gramineus Potamogeton illinoensis Potamogeton natans Potamogeton praelongus Potamogeton richardsonii Primulaceae Dodecatheon alpinum Lysimachia thyrsiflora Pteridaceae Adiantum aleuticum Aspidotis densa Cryptogramma acrostichoides Cryptogramma cascadensis Myriopteris gracillima Pellaea brachyptera Ranunculaceae Aconitum columbianum Actaea rubra Anemone drummondii Anemone multifida Anemone oregana Aquilegia formosa Caltha biflora Caltha leptosepala Delphinium depauperatum Delphinium nuttallianum Pulsatilla occidentalis Ranunculus alismifolius Ranunculus aquatilis Ranunculus flammula Ranunculus occidentalis Ranunculus orthorhynchus Ranunculus populago Ranunculus uncinatus Thalictrum fendleri Thalictrum sparsiflorum Rhamnaceae Ceanothus cordulatus Ceanothus prostratus Ceanothus velutinus Frangula rubra Rosaceae Amelanchier utahensis Cercocarpus ledifolius Chamaebatiaria millefolium Comarum palustre Drymocallis arizonica Drymocallis glandulosa Fragaria virginiana Geum macrophyllum Geum triflorum Holodiscus discolor Horkelia fusca Ivesia gordonii Potentilla ashlandica Potentilla drummondii Potentilla flabellifolia Potentilla gracilis Potentilla millefolia Potentilla procumbens Prunus emarginata Prunus virginiana Purshia tridentata Rosa woodsii Rubus leucodermis Rubus parviflorus Sanguisorba annua Sibbaldia procumbens Sorbus californica Spiraea densiflora Spiraea douglasii Rubiaceae Galium aparine Galium bifolium Galium bolanderi Galium grayanum Galium trifidum Galium triflorum Kelloggia galioides Salicaceae Populus tremuloides Populus trichocarpa Salix arctica Salix boothii Salix jepsonii Salix lasiandra Salix lemmonii Salix lucida Salix pseudomyrsinites Salix scouleriana Santalaceae Arceuthobium abietinum Arceuthobium americanum Arceuthobium californicum Arceuthobium campylopodum Phoradendron libocedri Sapindaceae Acer glabrum Saxifragaceae Lithophragma glabrum Lithophragma tenellum Micranthes odontoloma Mitella pentandra Saxifraga aprica Saxifraga bryophora Saxifraga fallax Saxifraga nidifica Saxifraga oregana Saxifraga tolmiei Scheuchzeriaceae Scheuchzeria palustris Scrophulariaceae Limosella acaulis Verbascum thapsus Solanaceae Chamaesaracha nana Nicotiana attenuata Nicotiana quadrivalvis Tofieldiaceae Tofieldia occidentalis Typhaceae Sparganium angustifolium Sparganium emersum Sparganium natans Typha latifolia Urticaceae Urtica gracilis Violaceae Viola adunca Viola bakeri Viola glabella Viola macloskeyi Viola pallens Viola purpurea Woodsiaceae Woodsia scopulina
Developments of SEINet, Symbiota, and associated specimen databases have been supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)