Plant Database (by name)

simple bog sedge - Kobresia simpliciuscula (Wahlenb.) Mackenzie

simple campion - Silene scouleri Hook. ssp. scouleri var. scouleri

simplebeak ironwort - Sideritis romana L.

simpleleaf chastetree - Vitex trifolia L.

simplestem bur-reed - Sparganium erectum L. ssp. stoloniferum (Graebn.) Hara

Simpson hedgehog cactus - Pediocactus simpsonii (Engelm.) Britt. & Rose

Simpson's buckwheat - Eriogonum microthecum Nutt. var. simpsonii (Benth.) Reveal

Sinai Jerusalem sage - Phlomis aurea Decne.

Singapore graveyard flower - Plumeria obtusa L.

single delight - Moneses uniflora (L.) Gray

singlehead pussytoes - Antennaria solitaria Rydb.

singleleaf ash - Fraxinus anomala Torr. ex S. Wats.

singleleaf pinyon - Pinus monophylla Torr. & Frém.

singlewhorl burrobrush - Hymenoclea monogyra Torr. & Gray ex Gray

Siskiyou beardtongue - Penstemon anguineus Eastw.

Siskiyou bluecurls - Trichostema simulatum Jepson

Siskiyou buckwheat - Eriogonum siskiyouense Small

Siskiyou false hellebore - Veratrum insolitum Jepson

Siskiyou lewisia - Lewisia cotyledon (S. Wats.) B.L. Robins.

Siskiyou lewisia - Lewisia cotyledon (S. Wats.) B.L. Robins. var. cotyledon

Siskiyou onion - Allium siskiyouense Ownbey

Sitka alder - Alnus viridis (Vill.) Lam. & DC. ssp. sinuata (Regel) A.& D. Löve

Sitka clubmoss - Lycopodium sitchense Rupr.

Sitka spruce - Picea sitchensis (Bong.) Carr.

Sitka valerian - Valeriana sitchensis Bong.

Sitka willow - Salix sitchensis Sanson ex Bong.

sixangle spurge - Euphorbia hexagona Nutt. ex Spreng.

sixweeks fescue - Vulpia octoflora (Walt.) Rydb.

sixweeks fescue - Vulpia octoflora (Walt.) Rydb. var. octoflora

sixweeks grama - Bouteloua barbata Lag.

sixweeks lovegrass - Eragrostis lutescens Scribn.

sixweeks muhly - Muhlenbergia depauperata Scribn.

sixweeks threeawn - Aristida adscensionis L.

skeletonleaf burr ragweed - Ambrosia tomentosa Nutt.

skeletonleaf willow - Salix phlebophylla Anderss.

skeletonplant - Lygodesmia D. Don

Skinner's false foxglove - Agalinis skinneriana (Wood) Britt.

skullcap speedwell - Veronica scutellata L.

skunk cabbage - Symplocarpus foetidus (L.) Salisb. ex Nutt.

skunk cabbage - Symplocarpus Salisb. ex Nutt.

skunk currant - Ribes glandulosum Grauer

skunkbush sumac - Rhus trilobata Nutt.

skunkbush sumac - Rhus trilobata Nutt. var. trilobata

sky lupine - Lupinus nanus Dougl. ex Benth.

skyblue aster - Symphyotrichum oolentangiense (Riddell) Nesom var. oolentangiense

skyflower - Hydrolea corymbosa J. Macbr. ex Ell.

skypilot - Polemonium eximium Greene

slash pine - Pinus elliottii Engelm.

sleeping popcornflower - Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnston var. hispidulus (Greene) Dorn

sleepingplant - Chamaecrista fasciculata (Michx.) Greene