
401. Palmer Amaranth
Amaranthus palmeri

402. Sticky Cinquefoil
Drymocallis glandulosa

403. Western Snakeroot
Ageratina occidentalis

404. Salt Spring Checkerbloom
Sidalcea neomexicana

405. Canyon Silktassel
Garrya veatchii

406. Southern Naiad
Najas guadalupensis

407. Common Lomatium
Lomatium utriculatum

408. Philadelphia Fleabane
Erigeron philadelphicus

409. Fringed Twinevine
Funastrum cynanchoides

410. Longstem Buckwheat
Eriogonum elongatum

411. Coastal Pricklypear
Opuntia littoralis

412. Thistle Sage
Salvia carduacea

413. Great Horsetail
Equisetum telmateia

414. Longleaf Bush Lupine
Lupinus longifolius

415. Alkali Mallow
Malvella leprosa

416. Mountain Indian Paintbrush
Castilleja parviflora

417. Water Knotweed
Persicaria amphibia

418. Spike Bentgrass
Agrostis exarata

419. Mountain Sweet Cicely
Osmorhiza berteroi

420. Fragrant Flatsedge
Cyperus odoratus

421. Brown’s Peony
Paeonia brownii

422. Southern Suncup
Camissoniopsis bistorta

423. Chinook Brome
Bromus laevipes

424. False Daisy
Eclipta prostrata

425. Spreading Alkaliweed
Cressa truxillensis

426. Tomcat Clover
Trifolium willdenovii

427. Fire Poppy
Papaver californicum

428. Bugle Hedgenettle
Stachys ajugoides

429. Hairy Yerba Santa
Eriodictyon trichocalyx

430. Whisperingbells
Emmenanthe penduliflora

431. Fowl Bluegrass
Poa palustris

432. Woollypod Milkweed
Asclepias eriocarpa

433. Pacific Blacksnakeroot
Sanicula crassicaulis

434. Hoary Tansyaster
Dieteria canescens

435. Sleepy Catchfly
Silene antirrhina

436. Sand Pygmyweed
Crassula connata

437. Interior California Buckwheat
Eriogonum fasciculatum var. polifolium

438. California Tea
Rupertia physodes

439. San Joaquin Snakeweed
Gutierrezia californica

440. Pointed Rush
Juncus oxymeris

441. Pinebush
Ericameria pinifolia

442. California Loosestrife
Lythrum californicum

443. Leafy Fleabane
Erigeron foliosus

444. Splendid Mariposa Lily
Calochortus splendens

445. Longleaf Pondweed
Potamogeton nodosus

446. Menzies’ Goldenbush
Isocoma menziesii

447. California Plantain
Plantago erecta

448. Water Parsley
Oenanthe sarmentosa

449. California Dandelion
Agoseris grandiflora

450. California Croton
Croton californicus

451. California Jointfir
Ephedra californica

452. Virginia Pepperweed
Lepidium virginicum

453. Seaside Petunia
Calibrachoa parviflora

454. Vinegarweed
Trichostema lanceolatum

455. Swamp Smartweed
Persicaria hydropiperoides

456. Cooper’s Popcornflower
Plagiobothrys collinus

457. Marsh Baccharis
Baccharis douglasii

458. Bush Seepweed
Suaeda nigra

459. Tower Rockcress
Turritis glabra

460. Redskin Onion
Allium haematochiton

461. Nested Polypody
Polypodium calirhiza

462. Swamp Sedge
Carex senta

463. Slender Woolly Buckwheat
Eriogonum gracile

464. Threadleaf Crowfoot
Ranunculus trichophyllus

465. Palmer’s Goldenbush
Ericameria palmeri

466. Santa Catalina Mariposa Lily
Calochortus catalinae

467. California Suncup
Eulobus californicus

468. Broad-Glumed Wheatgrass
Elymus violaceus

469. Nuttall’s Sunflower
Helianthus nuttallii

470. Pacific Pea
Lathyrus vestitus

471. Goosefoot Violet
Viola purpurea

472. Plummer’s Mariposa Lily
Calochortus plummerae

473. Pale Spikerush
Eleocharis macrostachya

474. Tall Flatsedge
Cyperus eragrostis

475. Santa Barbara Sedge
Carex barbarae

476. Brown-Headed Rush
Juncus phaeocephalus

477. Smooth Horsetail
Equisetum laevigatum

478. Smooth Flatsedge
Cyperus laevigatus

479. Dotted Smartweed
Persicaria punctata

480. Hairy Water-Clover
Marsilea vestita

481. Wild Cucumber
Marah macrocarpa

482. Imbricate Phacelia
Phacelia imbricata

483. Sawtooth Goldenbush
Hazardia squarrosa

484. Toad Rush
Juncus bufonius

485. Prairie Wedgescale
Sphenopholis obtusata

486. Neckweed
Veronica peregrina

487. Horseweed
Erigeron canadensis

488. Green Carpetweed
Mollugo verticillata

489. Prostrate Spurge
Euphorbia prostrata

490. American Mistletoe
Phoradendron leucarpum

491. Tar Vine
Boerhavia coccinea

492. Flatspine Bur Ragweed
Ambrosia acanthicarpa

493. American Black Nightshade
Solanum americanum

494. Blue Fiestaflower
Pholistoma auritum

495. Annual Wall-Rocket
Diplotaxis muralis

496. Small Venus’ Looking-Glass
Triodanis perfoliata subsp. biflora

497. Bigelow’s Spikemoss
Selaginella bigelovii

498. Spotted Hideseed
Eucrypta chrysanthemifolia

499. Sacapellote
Acourtia microcephala

500. Parish’s Bluecurls
Trichostema parishii

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