
501. Mountain Blue Penstemon
Penstemon laetus

502. Jimbrush
Ceanothus sorediatus

503. Narrowleaf Bedstraw
Galium angustifolium

504. Alaska Brome
Bromus sitchensis

505. Lindley’s Silverpuffs
Microseris lindleyi

506. Alkali Buttercup
Ranunculus cymbalaria

507. Southern Goldenrod
Solidago confinis

508. Common Knotgrass
Polygonum aviculare

509. Woolly Plantain
Plantago patagonica

510. Spurred Anoda
Anoda cristata

511. Indian Tobacco
Nicotiana quadrivalvis

512. Sapphire Woollystar
Eriastrum sapphirinum

513. Pale Persicaria
Persicaria lapathifolia

514. Winterfat
Krascheninnikovia lanata

515. Chocolate Lily
Fritillaria biflora

516. Little Barley
Hordeum pusillum

517. San Luis Blazingstar
Mentzelia micrantha

518. Crested Needlegrass
Eriocoma coronata

519. Royal Goldfields
Lasthenia coronaria

520. Whitestem Blazingstar
Mentzelia albicaulis

521. Nuttall’s Povertyweed
Blitum nuttallianum

522. Snake’s Head
Malacothrix coulteri

523. California Amaranth
Amaranthus californicus

524. American Yellowrocket
Barbarea orthoceras

525. Desert Centaury
Zeltnera exaltata

526. Chaparral Nightshade
Solanum xanti

527. White Pincushion
Chaenactis artemisiifolia

528. California Broomsage
Lepidospartum squamatum

529. Boraxweed
Nitrophila occidentalis

530. Spurge
Euphorbia ophthalmica

531. Eastwood’s Fiddleneck
Amsinckia eastwoodiae

532. Bristly Fiddleneck
Amsinckia tessellata

533. Coast Indian Paintbrush
Castilleja affinis

534. Sixweeks Threeawn
Aristida adscensionis

535. Mexican Rush
Juncus mexicanus

536. Floating Primrose-Willow
Ludwigia peploides

537. Smallflower Soap Plant
Hooveria parviflora

538. Wooly Lotus
Acmispon tomentosus var. glabriusculus

539. Smooth Desert Dandelion
Malacothrix glabrata

540. Mexican Sprangletop
Diplachne fusca subsp. uninervia

541. Bearded Sprangletop
Diplachne fusca subsp. fascicularis

542. California Prickly Phlox
Leptodactylon californicum

543. Littleseed Muhly
Muhlenbergia microsperma

544. Water Ribbons
Triglochin scilloides

545. Primrose Monkeyflower
Erythranthe primuloides

546. Indian Ricegrass
Eriocoma hymenoides

547. Shiny Chickweed
Stellaria nitens

548. Shining Pepperweed
Lepidium nitidum

549. Pinpoint Clover
Trifolium gracilentum

550. Foothill Clover
Trifolium ciliolatum

551. Pomona Milkvetch
Astragalus pomonensis

552. California Canarygrass
Phalaris californica

553. Schott’s Sedge
Carex schottii

554. San Diego Bird’s-Foot Trefoil
Acmispon micranthus

555. Evening Primrose
Camissoniopsis ignota

556. Miniature Suncup
Camissoniopsis micrantha

557. Prairie Plantain
Plantago elongata

558. Dwarf Plantain
Plantago pusilla

559. Wright Threeawn
Aristida wrightii

560. Nuttall’s Snapdragon
Sairocarpus nuttallianus

561. Coulter’s Snapdragon
Sairocarpus coulterianus

562. Wrinkled Rush
Juncus dubius

563. Hairy Horsebrush
Tetradymia comosa

564. Branched Hareleaf
Lagophylla ramosissima

565. Valley Mayweed
Matricaria occidentalis

566. Fragrant Rabbit-Tobacco
Pseudognaphalium beneolens

567. Thyme-Leaf Spurge
Euphorbia serpillifolia

568. Curvepod Yellowcress
Rorippa curvisiliqua

569. Kellogg’s Snapdragon
Neogaerrhinum strictum

570. Roundleaf Leather-Root
Hoita orbicularis

571. Dunn’s Lobelia
Palmerella debilis

572. Pointed Cryptantha
Cryptantha muricata

573. Common Fiddleneck
Amsinckia menziesii

574. Valdivia Duckweed
Lemna valdiviana

575. Tapertip Flatsedge
Cyperus acuminatus

576. Little Barley
Hordeum depressum

577. Wrinkled Rush
Juncus rugulosus

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