This list includes plants observed in a riparian area along the South Loop Road about one mile below the East Rim Viewpoint.
Willow: Salix sp. - Serrate leaf margins, green on both leaf surfaces.
Fragile Fern: Cystopteris fragilis
Drummond's Rush: Juncus drummondii
* Merten's Rush: Juncus mertensianus
* Spiked Woodrush: Luzula spicata
* Small-winged Sedge: Carex microptera
* Western Singlespike Sedge: Carex scirpoidea ssp. pseudoscirpoidea
* Pine Needlegrass: Achnatherum (pinetorum ?) or A. nelsonii ssp. nelsonii ?
* Bottlebrush Squirreltail: Elymus elymoides (ssp. californicus ?)
* Alpine Timothy: Phleum alpinum
Sandberg's Bluegrass: Poa secunda (ssp. ?)
* Spike Trisetum: Trisetum spicatum ?
* Lloydia: Lloydia serotina
* False Hellebore: Veratrum californicum var. californicum
* American Bistort: Bistorta bistortoides
* Oval-leaf Buckwheat: Eriogonum ovalifolium var. nivale
* Sulfur-flower Buckwheat: Eriogonum umbellatum var. dicrocephalum
* Alpine Sorrel: Oxyria digynia
* Douglas' Knotweed: Polygonum douglasii
* Pussypaws: Calyptridium umbellatum
Sierran Spring Beauty: Claytonia nevadensis - Red-tinged leaves filling the small creeks.
* Pygmy Lewisia: Lewisia pygmaea
* Prickly Sandwort: Arenaria aculeata
Ballhead Sandwort: Eremogone congesta var. congesta
* Field Mouse-ear: Cerastium arvense
* Douglas' Campion: Silene douglasii
* Oregon Campion: Silene oregana
* Umbellate Chickweed: Stellaria umbellata
* Marsh Marigold: Caltha leptosepala var. leptosepala
* Dwarf Larkspur: Delphinium depauperatum - Fading out of bloom.
* Plantain-leaved Buttercup: Ranunculus alismifolius var. alismifolius
* Suksdorf's Buttercup: Ranunculus eschscholtzii var. suksdorfii
Drummond's Rockcress: Arabis drummondii - Erect fruits.
* American Wintercress: Barbarea orthoceras
* Steens Draba: Draba cusickii var. cusickii
Daggerpod: Phoenicaulis cheiranthoides - Pods well formed.
* Lance-leaved Stonecrop: Sedum lanceolatum
* Roundleaf Alumroot: Heuchera cylindrica var. alpina
* Petalless Saxifrage: Saxifraga apetala (S. integrifolia var. apetala)
Brook Saxifrage: Saxifraga odontoloma - Not in bloom yet.
* Oregon Saxifrage: Saxifraga oregana
Alpine Prickly Currant: Ribes montigenum - Past bloom.
* Shrubby Cinquefoil: Dasiphora fruticosa
Prairie Smoke: Geum triflorum var. ciliatum - Feathery fruits forming.
* Gordon's Ivesia: Ivesia gordonii
* Brewer's Cinquefoil: Potentilla breweri
Sticky Cinquefoil: Potentilla glandulosa var. pseudorupestris - Past bloom.
* Diverse-leaved Cinquefoil: Potentilla glaucophylla
* Elmer's Cinquefoil: Potentilla gracilis var. elmeri
* Varying Cinquefoil: Potentilla versicolor
* Sibbaldia: Sibbaldia procumbens
Balloon Milkvetch: Astragalus whitneyi var. confusus
* Low Mt. Lupine: Lupinus lepidus var. lobbii
* Long-stalked Clover: Trifolium longipes var hansenii (T. longipes var. nevadense)
* Common Willowherb: Epilobium ciliatum var. glandulosum
* White-flowered Willowherb: Epilobium lactiflorum
* Groundsmoke: Gayophytum sp.
* Gray's Lovage: Ligusticum grayii
Pleated Gentian: Gentiana affinis - In bud.
* Alpine Shooting Star: Dodecatheon alpinum
* Dark-throat Shooting Star: Dodecatheon pulchellum var. pulchellum
* Purple Phacelia: Phacelia hastata var. alpina
* Broadleaf Bluebells: Mertensia ciliata
* Peck's Paintbrush: Castilleja peckiana
* Lewis' Monkeyflower: Mimulus lewisii
* Subalpine Monkeyflower: Mimulus tilingii
* Little Elephant Heads: Pedicularis attolens
* Small-flowered Penstemon: Penstemon procerus var. formosus
*Rydberg's Penstemon: Penstemon rydbergii var. rydbergii - Fading bloom.
Thyme-leaved Speedwell: Veronica serpyllifolia ssp. humifusa
* American Alpine Speedwell: Veronica wormskjoldii
* Yarrow: Achillea millefolium
* Orange Agoseris: Agoseris aurantiaca
* Alpine Agoseris: Agoseris monticola
* Alpine Pussytoes: Antennaria media
* Rosy Pussytoes: Antennaria rosea
Longleaf Arnica: Arnica longifolia
* Hairy Arnica: Arnica mollis
* Steens Mt Thistle: Cirsium peckii
* Discoid Goldenweed: Ericameria discoidea var. discoidea - Beginning to bloom.
* Cut-leaved Daisy: Erigeron compositus var. glabratus
* Foreign Fleabane: Erigeron peregrinus ssp. callianthemus var. scaposus
* Orange Sneezeweed: Hymenoxys hoopesii
* Hayden's Aster: Oreostemma alpigenum var. haydenii
* Howell's Goldenweed: Pyrrocoma howellii
* Thick-leaved Groundsel: Senecio crassulus - Fading out of bloom.
* Dwarf Mountain Butterweed: Senecio fremontii
* Northern Goldenrod: Solidago multiradiata
Narrowleaf Goldenweed: Nestotus stenophyllus - Past bloom.
* Leafy Aster: Symphyotrichum foliaceum var. parryi
* Common Dandylion: Taraxacum officinale