| RATING |
COMMON NAME |
SCIENTIFIC NAME |
| A |
alligatorweed |
Alternanthera philoxeroides |
| Q |
ambulia |
Limnophila indica |
| B |
baby's
breath |
Gypsophila paniculata |
| A |
beancaper,
Syrian |
Zygophyllum fabago |
| A |
bearded creeper |
Crupina vulgaris |
| C |
bermudagrass |
Cynodon spp. and hybrids |
| A |
biddy biddy |
Acaena novae-zelandiae |
| A |
biddy biddy, pale |
Acaena pallida |
| C |
bindweed, field |
Convolvulus arvensis |
| B |
bladderflower |
Araujia sericifera |
| A |
blueweed |
Helianthus ciliaris |
| C |
broom, French |
Genista monspessulana |
| C |
broom, Scotch |
Cytisus scoparius |
| A |
broomrape, branched |
Orobanche ramosa |
| A |
broomrape, Cooper's |
Orobanche cooperi |
| A |
broomrape, desert |
Orobanche cooperi |
| A |
camelthorn |
Alhagi maurorum |
| A |
capeweed |
Arctotheca calendula |
| B |
comfrey, rough |
Symphytum asperum |
| A |
crupina, common |
Crupina vulgaris |
| B |
distaff thistle, smooth |
Carthamus baeticus |
| A |
distaff thistle, whitestem |
Carthamus leucocaulos |
| B |
distaff thistle, woolly |
Carthamus lanatus |
| C |
dodder, all species
except giant dodder |
Cuscuta spp. |
| A |
dodder, giant |
Cuscuta reflexa |
| B |
dyer's woad |
Isatis tinctoria |
| Q |
fanwort, Carolina |
Cabomba caroliniana |
| B |
field cress, Austrian |
Rorippa austriaca |
| Q |
field cress, creeping yellow |
Rorippa sylvestris |
| C |
flag, western blue |
Iris missouriensis |
| B |
foxtail, giant |
Setaria faberi |
| B |
garlic, false |
Nothoscordum inodorum |
| B |
garlic, wild |
Allium vineale |
| B |
gaura, scarlet |
Gaura coccinea |
| B |
gaura, Drummond’s |
Gaura drummondii |
| B |
gaura, wavy-leaved |
Gaura sinuata |
| B |
goatgrass, barb |
Aegilops triuncialis |
| B |
goatgrass, jointed |
Aegilops cylindrica |
| B |
goatgrass, ovate |
Aegilops ovata |
| B |
gorse |
Ulex europaeus |
| B |
groundcherry, grape |
Physalis viscosa |
| A |
groundcherry, long-leaf |
Physalis longifolia |
| A |
halogeton |
Halogeton glomeratus |
| A |
harmel |
Peganum harmala |
| C |
henbane, black |
Hyoscyamus niger |
| B |
hoarycress, globe-podded |
Cardaria pubescens |
| B |
hoarycress, heart-podded |
Cardaria draba |
| B |
hoarycress, lens-podded |
Cardaria chalepensis |
| B |
horsenettle,
Carolina |
Solanum carolinense |
| B |
horsenettle,
white |
Solanum elaeagnifolium |
| A |
hydrilla |
Hydrilla verticillata |
| C |
iris, Douglas |
Iris douglasiana |
| C |
iris, western blue flag |
Iris missouriensis |
| C |
Johnsongrass |
Sorghum halepense |
| B |
jointvetch, rough |
Aeschynomene rudis |
| B |
kangaroothorn |
Acacia paradoxa |
| C |
kelp |
Polygonum amphibium var. emersum |
| C |
kikuyugrass |
Pennisetum clandestinum |
| C |
Klamathweed |
Hypericum perforatum |
| A |
knapweed, diffuse |
Centaurea diffusa |
| B |
knapweed, Russian |
Acroptilon repens |
| A |
knapweed, spotted |
Centaurea maculosa |
| A |
knapweed, squarrose |
Centaurea squarrosa |
| B |
knotweed,
giant |
Polygonum sachalinense |
| B |
knotweed,
Himalayan |
Polygonum polystachyum |
| B |
knotweed,
Japanese |
Polygonum cuspidatum |
| B |
loosestrife, purple |
Lythrum salicaria |
| Q |
lettuce, water |
Pistia stratiotes |
| C |
mallow, alkali |
Malvella leprosa |
| A |
marigold, wild |
Tagetes minuta |
| C |
medusahead |
Taeniatherum caput-medusae |
| A |
melon, dudaim |
Cucumis melo var. dudaim |
| B |
melon, paddy |
Cucumis myriocarous |
| A |
mesquite, creeping |
Prosopis strombulifera |
| B |
mistletoe, European |
Viscum album |
| B |
mustard, purple |
Chorispora tenella |
| A |
nightshade,
heartleaf |
Solanum cardiophyllum |
| B |
nightshade,
lanceleaf |
Solanum lanceolatum |
| A |
nightshade,
Torrey's |
Solanum dimidiatum |
| B |
nightshade,
white-margined |
Solanum marginatum |
| B |
nimblewill |
Muhlenbergia schreberi |
| B |
nutsedge, purple |
Cyperus rotundus |
| B |
nutsedge, yellow |
Cyperus esculentus |
| B |
onion, panicled |
Allium paniculatum |
| A |
peaweed,
Austrian |
Sphaerophysa salsula |
| B |
peppercress, perennial |
Lepidium latifolium |
| C |
povertyweed |
Iva axillaris |
| A |
punagrass |
Achnatherum brachychaetum |
| C |
puncturevine |
Tribulus terrestris |
| B |
quackgrass |
Elytrigia repens |
| B |
ragweed, giant |
Ambrosia trifida |
| B |
ragwort, Oxford |
Senecio squalidus |
| B |
ragwort, tansy |
Senecio jacobaea |
| Q |
restharrow, foxtail |
Ononis alopecuroides |
| B |
rice, red |
Oryza rufipogon |
| C |
Russianthistle, barbwire |
Salsola paulsenii |
| C |
Russianthistle, common |
Salsola tragus |
| Q |
Russianthistle, spineless |
Salsola collina |
| C |
St. Johnswort (as Hypericum perforatum) |
see Klamathweed |
| A |
sage, meadow |
Salvia virgata |
| B |
sage, Mediterranean |
Salvia aethiopis |
| A |
salsola,
wormleaf |
Salsola vermiculata |
| A |
salttree,
Russian |
Halimodendron halodendron |
| Q |
salvinia |
Salvinia auriculata complex |
| C |
sandbur, coast |
Cenchrus incertus |
| C |
sandbur, mat |
Cenchrus longispinus |
| C |
sandbur, southern |
Cenchrus echinatus |
| B |
Sicilian starthistle |
Centaurea sulphurea |
| A |
skeletonweed |
Chondrilla juncea |
| A |
sowthistle,
perennial |
Sonchus arvensis |
| Q |
spongeplant, (S. American & N. American) |
Limnobium spongia sensu lato |
| A |
spurge, leafy |
Euphorbia esula |
| B |
spurge, oblong |
Euphorbia oblongata |
| A |
spurge, serrate |
Euphorbia serrata |
| Q |
spurge, Geraldton carnation |
Euphorbia terracina |
| A |
starthistle, Iberian |
Centaurea iberica |
| B |
starthistle, purple |
Centaurea calcitrapa |
| B |
starthistle, Sicilian |
Centaurea sulphurea |
| C |
starthistle, yellow |
Centaurea solstitialis |
| B |
swinecress |
Coronopus squamatus |
| A |
tanglehead |
Heteropogon contortus |
| B |
thistle, artichoke |
Cynara cardunculus |
| B |
thistle, Canada |
Cirsium arvense |
| B |
thistle, distaff, smooth |
Carthamus baeticus |
| A |
thistle, distaff, whitestem |
Carthamus leucocaulos |
| B |
thistle, distaff, woolly |
Carthamus lanatus |
| A |
thistle, golden |
Scolymus hispanicus |
| A |
thistle, Illyrian |
Onopordum illyricum |
| C |
thistle, Italian (see
also "thistle, slenderflowered") |
Carduus pycnocephalus |
| Q |
thistle, Japanese |
Cirsium japonicum |
| A |
thistle, musk |
Carduus nutans |
| A |
thistle, plumeless |
Carduus acanthoides |
| A |
thistle, Scotch |
Onopordum acanthium |
| C |
thistle, slenderflowered |
Carduus tenuiflorus |
| A |
thistle, Taurian |
Onopordum tauricum |
| A |
thistle, wavyleaf |
Cirsium undulatum |
| A |
thistle, yellowspine |
Cirsium ochrocentrum |
| A |
toadflax, Dalmatian |
Linaria genistifolia subsp. dalmatica |
| B |
waterlily, banana |
Nymphaea mexicana |
| A |
witchweed |
Striga asiatica |
