Bloom at the summit was just beginning, as can be seen from many of the early season wildflowers listed below. A number of snow drifts were still visible on the flats atop Lookout Mountain, and these were more prominent along the north-facing slopes of the mountain.

Tolmie's Onion: Allium tolmiei

Yellow Bells: Fritillaria pudica

Mountain Sandwort: Eremogone capillaris var. americana

Upland Larkspur: Delphinium nuttallianum var. nuttallianum

Sagebrush Buttercup: Ranunculus glaberrimus (var. ellipticus ?)

Creeping Oregon Grape: Berberis repens

Little-leaf Rock Cress: Arabis microphylla

Rock Penny Cress: Noccaea fendleri ssp. glauca (Thlaspi fendleri var. glaucum)

Daggerpod: Phoenicaulis cheiranthoides

Bulblet Prairie Star: Lithophragma bulbifera (now L. glabrum)

Sticky Currant: Ribes viscossissimum

Broad-petal Strawberry: Fragaria virginiana var. platypetala

Prairie Smoke: Geum triflorum ssp. ciliatum

Sticky Cinquefoil: Potentilla glandulosa (var. ?)

Balloon Milk-vetch: Astragalus whitneyi var. sonneanus

Big-head Clover: Trifolium macrocephalum

Hooked Spur Violet: Viola adunca

Upland Yellow Violet: Viola praemorsa ssp. linguifolia

Goosefoot Violet: Viola purpurea ssp. venosa

Brown's Peony: Paeonia brownii

Salt and Pepper: Lomatium gormanii

Nine-leaved Desert Parsley: Lomatium triternatum ssp. platycarpum ?

Sierra Snake Root: Sanicula graveolens

Hesperochiron: Hesperochiron pumilus

Ball-head Waterleaf: Hydrophyllum capitatum var. capitatum

Long-flowered Bluebells: Mertensia longiflora

Wavy-leaf Paintbrush: Castilleja applegatei var. applegatei

Pale Paintbrush: Castilleja oresbia

Hairy Paintbrush: Castilleja pilosa var. pilosa

Small-flowered Blue-eyed Mary: Collinsia parviflora

Clustered Broomrape: Aphyllon franciscanum

Red Elderberry: Sambuccus mexicana

Downy-fruit Valerian: Valeriana acutiloba var. pubicarpa

Narrow-leaf Pussytoes: Antennaria stenophylla ?

Arrow-leaf Balsamroot: Balsamorhiza sagittata

Yellow Desert Daisy: Erigeron linearis

Western Groundsel: Senecio integerrimus var. exaltus