Western Sword Fern: Polystichum munitum - Trailhead.
Pacific Silver Fir: Abies amabilis
Noble Fir: Abies procera
Western White Pine: Pinus monticola
Ponderosa Pine: Pinus ponderosa var. ponderosa
Douglas Fir: Pseudotsuga menziesii var. menziesii
Western Hemlock: Tsuga heterophylla
* Vine Maple: Acer circinatum - Beginning to bloom.
* Douglas Maple: Acer glabrum var. douglasii - Beginning to bloom.
Oregon Boxwood: Paxistima myrsinites
Oregon White Oak: Quercus garryana var. garryana
* Elk Sedge: Carex geyeri
* Lemmon's Needlegrass: Achnatherum lemmonii ssp. lemmonii
* Blue Wildrye: Elymus glaucus
* Sandberg's Bluegrass: Poa secunda var. secunda
Bluebunch Wheatgrass: Pseudoroegneria spicata
Wild Ginger: Asarum caudatum
Tapertip Onion: Allium accuminatum
Sagebrush Mariposa Lily: Calochortus macrocarpus ssp. macrocarpus
Cascade Mariposa Lily: Calochortus subalpinus
Bead Lily: Clintonia uniflora
* Pale-anther Glacier Lily: Erythronium grandiflorum var. pallidum - Still blooming nicely where snow recently melted.
* Yellow Bells: Fritillaria pudica - Fading out of bloom and pods forming on balds atop Monte Cristo.
Columbia Lily: Lilium columbianum
* False Solomon Seal: Maianthemum racemosum ssp. amplexicaule - Beginning to bloom.
Star-flowered False Solomon Seal: Maianthemum stellatum - In bud.
* Hooker's Fairy Bells: Prosartes hookeri - Beginning to bloom.
* Western Wakerobin: Trillium ovatum - Nearing peak bloom.
* Fairy Slipper Orchid: Calypso bulbosa
Rattlesnake Plantain Orchid: Goodyera oblongifolia
Heart-leaf Buckwheat: Eriogonum compositum var. compositum
Tall Buckwheat: Eriogonum elatum - In bud.
Sulfur Buckwheat: Eriogonum umbellatum var. umbellatum - In bud.
Douglas' Knotweed: Polygonum douglasii
* Lanceleaf Springbeauty: Claytonia lanceolata - Still a nice bloom.
* Largeleaf Sandwort: Moehringia macrophylla
Western Columbine: Aquilegia formosa - In bud.
* Upland Larkspur: Delphinium nuttallianum
Vanilla Leaf: Achlys triphylla - In bud.
Shining Oregon Grape: Berberis aquifolium
Cascade Oregon Grape: Berberis nervosa
Inside-out-flower: Vancouveria hexandra
* Black-flowered Rockcress: Boechera atrorubens - Fading out of bloom.
* Slender Rockcress: Boechera sparsiflora
* Oak's Toothwort: Cardamine nuttallii - Fading out of bloom.
* Rough Wallflower: Erysimum capitatum - In bud.
* Daggerpods: Phoenicaulis cheiranthoides - Fading out of bloom.
Wormleaf Stonecrop: Sedum stenopetalum ssp. stenopetalum
* Bulblet Prairie Stars: Lithophragma bulbifera (now L. glabrum)
* Small-flowered Prairie Stars: Lithophragma parviflorum
* Three-toothed Mitrewort: Ozomelis trifida
Simple-leaved Foamflower: Tiarella trifoliata var. unifoliata
Prickly Currant: Ribes lacustre
* Red-flowering Currant: Ribes sanguineum - Peak bloom.
* Sticky Currant: Ribes viscosissimum - Beginning to bloom.
* Serviceberry: Amelanchier alnifolia var. alnifolia
Woods Strawberry: Fragaria vesca ssp. californica
Creambush Oceanspray: Holodiscus discolor
* Bittercherry: Prunus emarginata var. emarginata - Peak bloom.
Baldhip Rose: Rosa gymnocarpa
Dwarf Bramble: Rubus lasiococcus
Thimbleberry: Rubus nutkanus - Beginning to leaf out.
* Sitka Mountain Ash: Sorbus sitchensis var. sitchensis - Beginning to bloom.
* Leafy Peavine: Lathyrus polyphyllus - Beginning to bloom.
Spurred Lupine: Lupinus arbustus
Broadleaf Lupine: Lupinus latifolius var. latifolius
* Bighead Clover: Trifolium macrocephalum
American Vetch: Vicia americana var. americana
* Pioneer Violet: Viola glabella
* Round-leaved Violet: Viola orbiculata
* Evergreen Violet: Viola sempervirens ?
Snowbrush: Ceanothus velutinus var. velutinus
Fireweed: Chamerion angustifolium
Sharptooth Angelica: Angelica arguta
* Anomalous Desert Parsley: Lomatium anomalum ?
* Nineleaf Desert Parsley: Lomatium brevifolium (L. triternatum)
Columbia Desert Parsley: Lomatium columbianum - Fading out of bloom. Fruits maturing (but not dry yet).
* Cascade Desert Parsley: Lomatium martindalei
Fern-leaved Biscuit-root: Lomatium multifidum ? - I didn't walk downslope to be sure this isn't L. dissectum.
Common Sweet Cicely: Osmorhiza berteroi
* Western Sweet-cicely: Osmorhiza occidentalis
* Sierra Snakeroot: Sanicula graveolens
* Pinemat Manzanita: Arctostaphylos nevadensis
Little Pipsissewa: Chimaphila menziesii
Pipsissewa: Chimaphila umbellata
Sidebells Wintergreen: Orthillia secunda
White-vein Wintergreen: Pyrola picta
* Thinleaf Huckleberry: Vaccinium membranaceum
Nightblooming Morning Glory: Calystegia atriplicifolia ssp. atriplicifolia
Columbia Frasera: Frasera albicaulis var. columbiana - In bud.
* Western Starflower: Lysimachia latifolia
Large-flowered Collomia: Collomia grandiflora
Scarlet Gilia: Ipomopsis aggregata ssp. aggregata
* Midget Phlox: Microsteris gracilis
* Showy Phlox: Phlox speciosa - Beginning to bloom.
* Ballhead Waterleaf: Hydrophyllum capitatum var. thompsonii
Tall Scorpion-weed: Phacelia procera
Western Giant-hyssop: Agastache occidentalis
* Harsh Paintbrush: Castilleja hispida var. hispida
* Small-flowered Blue-eyed Mary: Collinsia parviflora
Woodland Beardtongue: Nothochelone nemorosa
Sawtooth Shrubby Penstemon: Penstemon fruticosus var. serratus
Rock Penstemon: Penstemon rupicola
Finetooth Penstemon: Penstemon subserratus
Orange Honeysuckle: Lonicera ciliosa
Purple-flower Honeysuckle: Lonicera conjugialis
Creeping Snowberry: Symhoricarpos mollis
Scouler's Harebell: Campanula scouleri
Yarrow: Achillea millefolium
Pathfinder: Adenocaulon bicolor
Pearly Everlasting: Anaphalis margaritacea
* Racemose Pussytoes: Antennaria racemosa
* Mountain Arnica: Arnica latifolia - Beginning to bloom.
* Northwest Balsamroot: Balsamorhiza deltoidea - Past its peak at the summit of Monte Cristo.
Silvercrown Luina: Cacaliopsis nardosmia - In bud.
Hall's Goldenweed: Columbiadoria hallii
* Baker's Hawksbeard: Crepis bakeri
Gray Hawksbeard: Crepis intermedia - In bud atop Monte Cristo.
* Oregon Sunshine: Eriophyllum lanatum var. lanatum
Klickitat Aster: Eucephalus glaucescens
Rocky Mountain Sunflower: Helianthella uniflora var. douglasii - Flower buds forming. Some dense, broad swathes of this along the trail
White-flowered Hawkweed: Hieracium albiflorum
Scouler's Hawkweed: Hieracium scouleri
* Nodding Microseris: Microseris nutans - Beginning to bloom.
Wall Lettuce: Mycelis muralis - Weedy species along parts of the trail.
* False Agoseris: Nothocalais troximoides
* Western Groundsel: Senecio integerrimus var. ochroleucus - Beginning to bloom.