The numbers of vascular plant taxa collected on the reservation include about:

Families . . . . . . . . . . . . . . . . . 76
Genera . . . . . . . . . . . . . . . . . . 325
Native species . . . . . . . . . . . . . 428
Introduced species . . . . . . . . . . . 139
Inter-generic hybrids . . . . . . . . . . . 4
Inter-specific hybrids . . . . . . . . . . 8

Important and diverse families include:

Asteraceae 50 genera 84 species
Poaceae 30 genera 74 species

Important and diverse genera include:

Trifolium 14 species Cryptantha 8 species
Mimulus 12 species Plagiobothrys 8 species
Bromus 10 species Gnaphalium 8 species
Lupinus 10 species

Over the landscape as a whole the six Quercus oak tree species are the most conspicuous plants. Adenostoma fasciculatum shrubs dominate chaparral habitats. Avena and Bromus grasses dominate the grassland, although often with a rich mixture of dominant forbs. One plant that has a great influence on how people use the reservation is the shrubby / viny Toxicodendron diversilobum, poison-oak!

List of Plants Known at Hastings

*Bold Highlight Indicates Revisions in Jepson Manual, Hickman (1993).
   Hickman, J. (ed). 1993. The Jepson Manual: Higher Plants of California. UC Press, Berkeley, CA 1400 pp.
  You can copy the scientific name of the plant from the plant list here into the NatureServe search page and obtain other information on state, federal status, images, distribution, ecology, and literature for each species.

Abutilon theophrasti

Acer macrophyllum

Achillea borealis (see Achillea millefolium)

Achillea millefolium

Achnatherum*(see below) coronatum

Achyrachaena mollis

Adenostoma fasciculatum

Adiantum jordanii

Aesculus californica

Agoseris grandiflora

Agoseris heterophylla

Agoseris retrosa

Agropyron desertorum

Agropyron parishii

(see Elymus stebbinsii)

Agrostis exarata

Agrostis semiverticillata

(see Agrostis viridis)

Agrostis viridis

Aira caryophyllea

Alchemilla occidentalis

(see Aphanes occidentalis)

Allium crispum

Allium peninsulare (see Allium crispum)

Allocarya bracteatus (see Plagiobothrys)

Allophyllum gilioides

Alnus rhombifolia

Amaranthus albus

Amaranthus blitoides

Amaranthus retroflexus

Amsinckia intermedia (see Amsinckia menziesii)

Amsinckia menziesii var. intermedia

Amsinckia menziesii var. menziesii

Amsinckia retrorsa (see A. menziesii)

Anagallis arvensis

Anagallis linifolia

Androsace elongata

Anthemis cotula

Antirrhinum hookerianum (see Antirrhinum

kelloggii )

Antirrhinum kelloggii

Antirrhinum multiflorum

Anthriscus caucalis

Anthriscus scandicina

(see Anthriscus caucalis)

Aphanes occidentalis

Apiastrum angustifolium

Aquilegia formosa

Arabis glabra

Aralia californica

Arbutus menziesii

Arctostaphylos glandulosa

forma glandulosa

forma cushingiana

Arctostaphylos glandulosa

forma glandulosa

Arctostaphylos glauca var puberula

Arctostaphylos tomentosa

Arenaria californica

(see Minuartia californica)

Arenaria douglasii

(see Minuartia douglasii)

Arenaria pusilla

(see Minuartia pusilla)

Artemisia californica

Artemisia douglasiana

Artemisia dracunculus

Asclepias eriocarpa

Asclepias fascicularis

Asparagus officinalis

Aspidotis californica

Aster chilensis

Aster radulinus

Astragalus douglasii

Astragalus gambelianus

Athysanus pusillus

Avena barbata

Avena fatua

Avena sativa

Azolla filiculoides

Baccharis douglasii

Baccharis glutinosa

(see Baccharis salicifolia)

Baccharis pilularis

Baccharis salicifolia

Baccharis viminea (see Baccharis glutinosa)

Baeria (see Lasthenia)

Barbarea americana (see Barbarea orthoceras)

Barbarea orthoceras

Berberis pinnata

Berula erecta

Bloomeria crocea

Boisduvalia densiflora

(see Epilobium densiflorum)

Bowlesia incana

Brassica campestris

(see Brassica rapa)

Brassica geniculata

(see Hirschfeldia incana)

Brassica kaber

(see Sinapis arvensis)

Brassica nigra

Brassica rapa

Brickellia californica

Briza maxima

Briza minor

Brodiaea ixioides (see Triteleia)

Brodiaea jolonensis

Brodiaea lutea (see Triteleia ixioides)

Brodiaea pulchella

(see Dichelostemma capitatum)

Bromus arenarius

Bromus carinatus

Bromus diandrus

Bromus grandis

Bromus hordeaceus

Bromus grandis x B laevipes

Bromus laevipes

Bromus madritensis ssp. rubens

Bromus mollis

(see Bromus hordeaceus)

Bromus pseudolaevipes

Bromus rigidus (see Bromus diandrus)

Bromus rubens

(see Bromus madritensis ssp. rubens)

Bromus tectorum

Calamagrostis rubescens

Calandrinia breweri

Calandrinia ciliata

Callitriche marginata

Calochortus albus

Calochortus luteus

Calochortus splendens

Calycadenia truncata

Calyptridium monandrum

Calystegia malacophylla

Calystegia subacaulis

Camissonia campestris

Camissonia contorta

Camissonia graciliflora

Camissonia hirtella

Camissonia ignota

Camissonia intermedia

Camissonia luciae

Camissonia micrantha

Capsella bursa-pastoris

Cardamine californica

Cardamine oligosperma

Cardaria draba

Carex alma

Carex barbarae

Carex bolanderi

Carex deweyana

Carex globosa

Carex leptopoda

(see Carex deweyana ssp. leptopoda)

Carex serratodens

Castilleja affinis

Castilleja attenuata

Castilleja densiflora

Castilleja douglasii (see Castilleja affinis)

Castilleja exserta

Castilleja foliolosa

Catapodium rigidum

(see Desmazeria rigida)

Caucalis microcarpa

(see Yabea microcarpa)

Ceanothus cuneatus

Ceanothus oliganthus

Ceanothus papillosus

Ceanothus ramulosus (see cuneatus)

Ceanothus sorediatus

(see Ceanothus oliganthus ssp. sorediatus)

Centaurium davyi

Centaurea melitensis

Centaurea solstitialis

Cerastium glomeratum

Cercocarpus betuloides

Chaenactis glabriuscula

Chaetopappa (see Pentachaeta)

Chamaesyce maculata

Chamaesyce serpyllifolia

Chamomilla suaveolens

Chenopodium album

Chenopodium ambrosioides

Chenopodium berlandieri

Chenopodium californicum

Chenopodium murale

Chlorogalum pomeridianum

Chorizanthe coriacea

(see Lastarriaea coriacea)

Chorizanthe douglasii

Chorizanthe membranacea

Chorizanthe staticoides

Chrysanthemum parthenium

(see Tanacetum parthenium)

Chrysopsis villosa

(see Heterotheca sessiliflora ssp. echinoides)

Cirsium coulteri (see C. occidentale var. ven.)

Cirsium occidentale var. venustum

Cirsium proteanum (see C. occidentale var. ven.)

Cirsium quercetorum

Cirsium vulgare

Clarkia affinis

Clarkia bottae (see Clarkia lewisii)

Clarkia elegans (see Clarkia unguiculata)

Clarkia lewisii

Clarkia purpurea

Clarkia similis

Clarkia unguiculata

Claytonia exigua

Claytonia perfoliata

Clematis lasiantha

Clematis ligusticifolia

Collinsia bartsiifolia

Collinsia childii

Collinsia heterophylla

Collinsia solitaraia (see Collinsia sparsiflora)

Collinsia sparsiflora

Collomia grandiflora

Conium maculatum

Consultus nocopeilistus

Convolvulus arvensis

Convolvulus malacophylla (see Calystegia)

Convolvulus subacaulis (see Calystegia)

Conyza bonariensis

Conyza canadensis

Cordylanthus rigidus

Corethrogyne filaginifolia

(see Lessingia filaginifolia)

Cornus californicus (see C. occidentalis)

Cornus occidentalis

(see Cornus sericea ssp. occidentalis)

Cornus sericea

Crassula aquatica

Crassula connata

Crassula erecta

(see Crassula connata)

Cryptantha clevelandii

Cryptantha decipiens

Cryptantha flaccida

Cryptantha micromeres

Cryptantha microstachys

Cryptantha muricata

Cryptantha nevadensis

Cryptantha rattanii

(see Cryptantha decipiens)

Cryptantha sparsiflora

(see Cryptantha flaccida)

Cupressus macrocarpa

Cuscuta californica

Cuscuta subinclusa

Cuscuta ceanothi

(see Cuscuta subinclusa)

Cynodon dactylon

Cynoglossum grande

Cynosurus echinatus

Cyperus eragrostis

Cystopteris fragilis

Cytisus monspessulanus

(see Genista monspessulana)

Dactylis glomerata

Datisca glomerata

Datura meteloides

(see Datura wrightii)

Datura stramonium

Datura wrightii

Daucus pusillus

Delphinium californicum

Delphinium decorum (see Delphinium patens)

Delphinium parryi

Delphinium patens

Dentaria californica

(see Cardamine californica var. integrifolia)

Dentaria integrifolia

(see Cardamine californica var. integrifolia)

Deschampsia danthonioides

Deschampsia elongata

Descurainia pinnata

Descurainia sophia

Desmazeria rigida

Dichelostemma capitatum

Dichelostemma pulchella

(see Dichelostemma capitatum)

Diplacus (see Mimulus)

Distichlis spicata

Dodecatheon clevelandii

Draba sophia

Draba verna

Dudleya cymosa

(see Dudleya lanceolata)

Dudleya lanceolata

Dryopteris arguta

Echeveria (see Dudleya)

Echidiocarya ca (see Plagiobothrys)

Echinochloa crus-galli

Eleocharis macrostachya

Elymus condensatus

(see Leymus condensatus)

Elymus glaucus

Elymus glaucus x Sitanion jubatum

(see Elymus glaucus x Elymus multisetus)

Elymus multisetus

Elymus stebbinsii

Elymus triticoides

(see Leymus triticoides)

Elymus triticoides x Elymus condensatus

(see Leymus triticoides x Leymus condensatus)

Emmenanthe penduliflora

Epilobium brachycarpum

Epilobium canum

Epilobium ciliatum

Epilobium densiflorum

Epilobium paniculatum

(see Epilobium brachycarpum)

Epilobium watsonii

(see Epilobium ciliatum spp. watsonii)

Equisetum hyemale

Equisetum laevigatum

Equisetum telmateia

Ericameria arborescens

Eremocarpus setigerus

Eriastrum densifolium

Eriastrum virgatum

Erigeron ( see Conyza bonariensis) l

Erigeron canadensis (see Conyza canadensis)

Erigeron foliosus

Erigeron philadelphicus

Eriodictyon californicum

Eriodictyon tomentosum

Eriogonum angulosum

Eriogonum elegans

Eriogonum elongatum

Eriogonum fasciculatum

Eriogonum gracile

Eriogonum nortonii

Eriogonum nudum

Eriophyllum confertiflorum

Erodium botrys

Erodium brachycarpum

Erodium cicutarium

Erodium macrophyllum

Erodium moschatum

Erysimum capitatum

Eschscholzia caespitosa

Eschscholzia californica

Euphorbia crenulata

Euphorbia peplus

Euphorbia serpyllifolia

(see Chamaesyce serpyllifolia ssp. hirtula)

Euphorbia spathulata

Euphorbia supina

(see Chamaesyce maculata)

Evax sparsiflora

(see Hesperevax sparsiflora)

Festuca arundinacea

Festuca elmeri

Festuca idahoensis

Filago californica

Filago gallica

Foeniculum vulgare

Fritillaria affinis

Fritillaria lanceolata

(see Fritillaria affinis)

Galium angustifolium

Galium aparine

Galium californicum

Galium murale

Galium nuttallii (see porrigens)

Galium parisiense

Galium porrigens

Garrya flavescens

Gastridium ventricosum

Genista monspessulana

Geranium dissectum

Geranium molle

Gilia achilleifolia

Gilia clivorum

Gilia gilioides (see Allophyllum gilioides)

Gilia multicaulis (see Gilia clivorum)

Gilia tenuiflora

Githopsis diffusa

Githopsis specularioides

Gnaphalium beneolens

(see Gnaphalium canescens ssp. beneolens)

Gnaphalium californicum

Gnaphalium canescens

Gnaphalium chilense

(see Gnaphalium stramineum)

Gnaphalium luteo-album

Gnaphalium microcephalum

(Gnaphalium canescens ssp. microcephalum)

Gnaphalium palustre

Gnaphalium purpureum

Gnaphalium ramosissimum

Gnaphalium stramineum

Godetia cylindrica (see Clarkia lewisii)

Godetia epilobioides (see Clarkia similis)

Godetia quadrivulnera (see Clarkia purpurea)

Grossularia amarum

(see Ribes amarum)

Grossularia californicum

(see Ribes californicum)

Grossularia divaricatum

(see Ribes divaricatum)

Grossularia menziesii

(see Ribes menziesii)

Grossularia sericeum

(see Ribes sericeum)

Grossularia speciosum

(see Ribes speciosum)

Guillenia lasiophylla

Habenaria elegans

(see Piperia elegans)

Haplopappus arborescens

(see Ericameria arborescens)

Hazardia squarrosa

Helenium puberulum

Helianthemum scoparium var vulgare

Heliotropium curassavicum

Hemizonia corymbosa

Hemizonia lobbii

Hesperomecon linearis

(see Meconella linearis)

Heteromeles arbutifolia

Hesperevax sparsiflora.

Heterotheca sessiliflora

Hieracium argutum

Hirschfeldia incana

Hoita macrostachya

Hoita orbicularis

Holcus lanatus

Holodiscus discolor

Hordeum brachyantherum

Hordeum californicum

(see Hordeum brachyantherum ssp.californicum)

Hordeum geniculatum

(see Hordeum marinum ssp. gussoneanum)

Hordeum glaucum

(see Hordeum murinum ssp. glaucum)

Hordeum hystrix (see Hordeum geniculatum)

Hordeum leporinum

(see Hordeum murinum ssp. leporinum)

Hordeum marinum

Hordeum murinum

Hordeum stebbinsii (see H. glaucum)

Hordeum vulgare

Hypochaeris glabra

Hypochaeris radicata

Juglans californica

Juglans hindsii

(see Juglans californica var. hindsii)

Juglans regia

Juncus balticus

Juncus bufonius

Juncus effusus

Juncus