Solidago canadenis var. altissima (tall goldenrod) -- plume; 3-veined; stem grayish-downy

Solidago canadensis var. canadensis (Canada goldenrod) 542 -- plume; 3-veined; main stem hairy above, smooth near base

Solidago elliottii (coastal swamp goldenrod) 541 -- plume; lvs not noticeably 3-veined

Solidago erecta (erect goldenrod) 534 -- wand-like; 6-9; stem smooth

Solidago fistulosa (hairy piney woods goldenrod) 541 -- plume; lvs sessile, elliptical, entire or finely toothed

Solidago flexicaulis (zig-zag goldenrod) 536 -- axillary; lvs egg-shaped, sharply toothed

Solidago gigantea (late goldenrod) 541 -- plume; 3-veined; stem smooth glaucous

Solidago gracillima (southern bog goldenrod) 535 -- wand-like; sessile at top, finetly toothed at bottom

Solidago hispida (hairy goldenrod) 534 -- wand-like; stem & lvs densely hairy; dry open woods

Solidago juncea (early goldenrod) 538 -- plume; basal lvs toothed, middle lvs entire; stem green

Solidago macrophylla (big-leaved goldenrod) 532 -- wand-like; basal lvs large, egg-shaped

Solidago nemoralis (gray goldenrod) -- plume; lvs grayish & fine hairy

Solidago odora (sweet goldenrod) 541-- plume; 1-veined; crushed entire lvs smell of anise

Solidago patula (rough-leaved goldenrod) 538 -- plume; lf tops very rough; stem 4-sided

Solidago petiolaris (goldenrod) 537 -- club-like; AE, near sessile, elliptical

Solidago ptarmicoides (goldenrod) 544 -- white; looks like an aster; lvs stiff, 3-6" long, narrowly lanceolate

Solidago puberula (dusty goldenrod) 533 -- wand-like; about 10; stem minutely hairy

Solidago radula (rough goldenrod) 543 -- plume; one-veined; AT, sessile

Solidago riddellii (goldenrod) 544 -- roundish; lvs AE, long, lanceolate, drooping

Solidago rigida (stiff goldenrod) 543 -- flattish; lvs oval or oblong, rough; sandy areas

Solidago rugosa (rough-stemmed goldenrod) -- plume; lvs not noticeably 3-veined

Solidago rupestris (riverbank goldenrod) 542 -- lvs narrowly lanceolate, toothed, long ptd

Solidago sempervirens (seaside goldenrod) 535 -- club-like/plume; lvs succulent

Solidago simplex (goldenrod) 533 -- wand-like; lvs sessile, AT, spoon-shaped

Solidago sp. (goldenrod) Aseraceae/Astereae 532 --

Solidago speciosa (showy goldenrod) 534 -- snow-cone; 5-8 rays; stem reddish

Solidago squarrosa (squarrose goldenrod) 532 -- wand-like; lvs egg-shaped; stem stout; dry open woods

Solidago stricta (wand goldenrod) 535 -- wand-like; lvs sessile & appressed to stem

Solidago tortifolia (goldenrod) 541 -- plume; lvs sessile, AE at top, AT toothed at bottom

Solidago uliginosa (northern bog goldenrod) 534 -- plume; lf tops smooth; basal lvs lanceolate

Solidago ulmifolia (elm-leaved goldenrod) 539 -- plume; 3-5; lvs sharply toothed

Sonchus arvensis (field sow thistle) Asteraceae/Lactuceae 591 -- heads rel large 3-5 cm; lvs clasping, thin, w/ large sinuses

Sonchus asper (prickly sow thistle) Asteraceae/Lactuceae 591 -- heads smaller lvs clasping & very curved at base

Sonchus oleraceus (common sow thistle) Asteraceae/Lactuceae 591 -- heads smaller; stem not as hairy; lvs w/ broad arrowhead tips

Sorbaria sorbifolia Rosaceae (5 5 N 5) 219 --

Sorbus americana (American mountain ash) Rosaceae (5 5 N 2-4) 246

Sorbus aucuparia (European mountain ash) Rosaceae (5 5 N 2-4) 246 -- lflts more or less densely white villous beneath

Sorbus decora (showy mountain ash) Rosaceae (5 5 N 2-4) 246 --

Sorghastrum elliottii Poaceae 772 --

Sorghastrum nutans (Indian nut grass) Poaceae 773 -- golden brown, shining infl; very thin stem lf

Sorghum bicolor (sorghum) Poaceae 772

Sorghum halepense (Johnson grass) Poaceae 772 -- tall grass; Xmas tree, erect; lobster claws w/ twisted awn

Sparganium americanum (American burreed) 776 -- stem erect; lvs keeled or triangular in cross-section

Sparganium androcladum (branching bur reed) 776 -- stem erect

Sparganium angustifolium (narrow leaved burreed) 777 -- stem us. floating

Sparganium chlorocarpum (green-fruited burreed) 776 -- stem erect

Sparganium emersum (burreed) 777 -- stem floating

Sparganium eurycarpum (giant burreed) 776 -- stem erect; fr broadly obpyramidal

Sparganium fluctuans (fluctuating burreed) 777 -- stem floating

Sparganium minimum (smalle burreed) 778 -- stem floating; solitary staminal head

Sparganium sp. (bur reed) Sparganiaceae (0 3-6 3-6 0/ 0 3-6 0 1) 776 --

Spartina alterniflora (salt marsh hay cordgrass) Poaceae 749 -- up to 8 feet along outer edge of salt marshes

Spartina cynosuroides (big cordgrass) Poaceae 749 -- up to 10 feet, more often in the water; no bristle on end of fl scales

Spartina patens (salt meadow cordgrass) Poaceae 750 -- short grass, flattened in salt marshes; thin stems & lvs

Spartina pectinata (prairie cord grass) Poaceae 749 -- to 7 feet at upland edge of salt marsh; a bristle on the end of the fl scales

Spergula arvensis (corn spurrey) Caryophyllaceae (5 5 10or5 5) -- white in term branching clusters; WE very narrow, 10 or more

Spergula morisonii (Morison's spurrey) Caryophyllaceae (5 5 10or5 5) 105

Spergula pentandra (spurrey) Caryophyllaceae (5 5 10or5 5) 105 -- casual

Spergularia canadensis (northern sand spurrey) (5 5 2-5 3) Caryophyllaceae 106

Spergularia marina (salt marsh sand spurrey) (5 5 2-5 3) Caryophyllaceae 105 -- pink or white; OE linear

Spergularia rubra (roadside sand spurrey) (5 5 6-10 3) Caryophyllaceae 105 -- pink; flat lvs growing in tufts

Sphenopholis nitida Poaceae 711 --

Sphenopholis obtusata Poaceae 711 --

Sphenopholis pensylvanica Poaceae 711 --

46