Plant Database (by name)

spinulose woodfern - Dryopteris carthusiana (Vill.) H.P. Fuchs

spiny amaranth - Amaranthus spinosus L.

spiny chloracantha - Chloracantha spinosa (Benth.) Nesom

spiny cockleburr - Xanthium spinosum L.

spiny fiddlewood - Citharexylum spinosum L.

spiny greasebush - Glossopetalon spinescens Gray var. meionandrum (Koehne) Trel.

spiny hedgehog cactus - Echinocereus dasyacanthus Engelm.

spiny hopsage - Grayia spinosa (Hook.) Moq.

spiny menodora - Menodora spinescens Gray

spiny milkvetch - Astragalus kentrophyta Gray var. kentrophyta

spiny milkwort - Polygala subspinosa S. Wats.

spiny naiad - Najas marina L.

spiny phlox - Phlox hoodii Richards.

spiny rush - Juncus acutus L.

spiny sowthistle - Sonchus asper (L.) Hill

spiny spiderflower - Cleome spinosa Jacq.

spiny-spore quillwort - Isoetes tenella Léman

spinyfruit buttercup - Ranunculus muricatus L.

spinyhair blazingstar - Mentzelia tricuspis Gray

spinystar - Escobaria vivipara (Nutt.) Buxbaum

spinystar - Escobaria vivipara (Nutt.) Buxbaum var. radiosa (Engelm.) D.R. Hunt

spinystar - Escobaria vivipara (Nutt.) Buxbaum var. rosea (Clokey) D.R. Hunt

spinystar - Escobaria vivipara (Nutt.) Buxbaum var. vivipara

spiral ditchgrass - Ruppia cirrhosa (Petag.) Grande

spiral pondweed - Potamogeton spirillus Tuckerman

spiral sorrel - Oxalis spiralis G. Don

spirea - Spiraea L.

splendid feather moss - Hylocomium splendens (Hedw.) Schimp. in B.S.G.

splendid mariposa lily - Calochortus splendens Dougl. ex Benth.

splitawn sedge - Carex tumulicola Mackenzie

splitbeard bluestem - Andropogon ternarius Michx.

splitbeard bluestem - Andropogon ternarius Michx. var. cabanisii (Hack.) Fern. & Grisc.

splitleaf Indian paintbrush - Castilleja rhexiifolia Rydb.

spoonleaf buckwheat - Eriogonum spathulatum Gray

spoonleaf purple everlasting - Gamochaeta purpurea (L.) Cabrera

spoonleaf sundew - Drosera intermedia Hayne

spotted beebalm - Monarda punctata L.

spotted beebalm - Monarda punctata L. ssp. punctata var. occidentalis (Epling) Palmer & Steyermark

spotted buckwheat - Eriogonum maculatum Heller

spotted evening-primrose - Oenothera canescens Torr. & Frém.

spotted fritillary - Fritillaria atropurpurea Nutt.

spotted geranium - Geranium maculatum L.

spotted henbit - Lamium maculatum L.

spotted joepyeweed - Eupatoriadelphus maculatus (L.) King & H.E. Robins. var. bruneri (Gray) King & H.E. Robins.

spotted knapweed - Centaurea stoebe L. ssp. micranthos (Gugler) Hayek

spotted ladysthumb - Polygonum persicaria L.

spotted medick - Medicago arabica (L.) Huds.

spotted phacelia - Phacelia maculata Wood

spotted pondweed - Potamogeton pulcher Tuckerman

spotted sandmat - Chamaesyce maculata (L.) Small