158 
SEED TRADE BUYERS GUIDE 
SCIENTIFIC NAMES OF NOXIOUS WEEDS AS USED IN STATE SEED LAWS 
INames in parentheses are those used in the various state laws but are not the approved name on the 
Seed List of the U. S. Dept, of Agriculture.) 
A 
Alkali Mallow —Sida hederacea 
Australian Burnweed —ErecMtitea prenan- 
thoides 
Austrian Field Cress —Radicula austnaca {Ko- 
ripa austriaca) 
Austrian Pea Weed —Swainconia solsula 
B 
Ball Mustard —Neslia paniculata 
Bermuda Grass —Cynodon (or Capriola) dactylon 
Bearded Darnel —Lolium temulentum 
Big Mouse-ear —Cerastium vulgatum 
Bindweed— Convolvulus spp. (Tex. & Pa.) 
(Calif. Convolvulus arvensis) 
Black Mustard —Brassioa nigra 
Bladder Campion —Silene latifolia 
Blue Lettuce —Lactuoa pulchella 
Blue Weed —Echuini vulgare (Tex. Helianthus 
ciliaris ) 
Bracted Plantain —Plantago aristata 
Buckhorn— Plantago lanceolata 
Buckhorn Plantain— Plantago lanceolata 
Bull Nettle— (III. Solanum carolinense) 
Bull Thistle— Cirsium lanceolatum 
Burdock— Arctium minus 
Burdock— (La. Xanthhim canadense) 
Burr Grass— (Ariz.rf) 
Butter and Eggs— Linaria vulgaris (lAnaria 
Unaria) 
C 
Camel’s Thorn— Alhagi pseudalhagi (or Alhagi 
camelorum) 
Canada Thistle— Cirsium arvense (or Garduus 
arvensis) 
Careless Weed— (Ariz.-f) 
Cat’s Ear— Hypochaeris radicata 
Cheat or Chess— Bromus secalinus (Kan. Bro- 
mus spp.) 
Charlock— Brassica arvensis 
Chickweed— CerasUum vulgatum 
Chicory —Cichorium intybus 
Clover Dodder —Cuscuta epithymum 
Coast Dandelion —Hypochaeris radicata 
Cocklehur —Xanthium sp. 
Cocoa Grass —Cyperus rotundus 
Common Plantain— (Ind. Plantago major & 
rugelii) 
Corn Cockle —Agrostemma (or Lychnis) githago 
Cow Cockle —Vaccaria pyramidata 
Cow Herh —(Saponaria vaccaria) 
Crab Grass —Digitaria sanguinalis 
Crab Grasses —Digitaria spp. 
Creeping Mallow —Sida hederacea 
Creeping Sow Thistle— (Calif. Sonchus arvensis) 
Curled Dock —Rumex crispus 
Curlydock —Rumex crispus 
D 
Daisy Fleabane —Erigeron ramosus 
Dandelion —Leontodon (or Taraxacum) spp. 
(La. Pyrrhopappus carolinianus) 
(Nev. Hypochaeris spp.) 
Darnel —Lolium temulentum 
Deathweed —Iva axillaris 
Devil’s Paint Brush —Hieracium aurantiacum 
Docks —Rumex spp. 
Dock, Bitter —Rumex obtusifolius 
Dock, Clustered— (Ma. Rumex conglomeratus) 
Dock, Large— (La. Rumex obtusifolius) 
Dock, Smooth —(Iowa Rumex altissimus) 
Dock, Sour— (Tenn. Rumex obtusifolius) 
(Iowa Rumex crispus) 
Dock, Yellow— (Ma. Rumex crispus) 
Dodder—Cttscwta spp. (La. Cuscuta epithymum) 
E 
English Charlock —Brassica arvensis 
European Morning Glory —Convolvulus arvensis 
r 
False Flax —Camelina spp. 
Fanweed —Thlaspi arvense 
Field Bindweed —Convolvulus arvensis 
Field Madder —Sherardia arvensis 
Field Penny Cress— Thlaspi arvense 
Field Sorrel— Rumex acetosella 
Fireweed— Erechtites prenanthoides 
Flowering Spurge —Euphorbia corollata 
Foxtail— (La. Alopecurus geniculatus) 
Frenchweed —Thlaspi arvense 
G 
Galinsoga —Oalinsoga parviflora 
Goat Grass —Aegilops Triuncialis 
Goat Weed —Hypericum perforatum 
Ground Nut Burr— (Nev. Tribulus spp.) 
Ground Cherry— Physalis lanceolata 
H 
Hare’s Ear Mustard —Conringia orientalis 
Hawkweed— Hieracium spp. 
Hoary Cress— Lepidium draba 
Horsenettle— Solanum carolinsense 
Hop Clover— TrifoUum aureum^ or dubium, or 
procumbens ^ 
Indian Mustard— Brassica juncea 
I 
Jim Hill Mustard— Sisymbrium altissimum 
Johnson Grass— Sorghum (or Holcus) halepense 
K 
Klamath Weed— Hypericum perforatum 
King Devil Weed— Hieracium pratense (Pa. 
Hieracium spp.) 
L 
Large Dock— (La. Rumex obtusifolius) 
Lamb’s Quarters— Chenopodium album 
Leafy Spurge —Euphorbia esula (Iowa Euphor- 
bia esula and lucida) 
M 
Morning Glory —Ipomoea spp. (Nev. Convolvulus 
spp.) (Calif. Convolvulus arvensis) 
Mustards —Brassica spp. 
N 
Nut Grass —Cyperus spp. (Calif.) 
O 
Orange Hawkweed —Hieracium auramtiacum 
Oxeye daisy —Chrysanthemum leucanthemum 
(La. RudbecJcia hirta) 
P 
Perennial Bull Nettle —Solanum carolinense 
Perennial Pepper Grass —Lepidium draba 
Perennial Sow Thistle —Sonchus Arvensis 
(Iowa also Sonchus uliginosus) 
Plantain —Plantago spp. 
Poison Hemlock—Cow-iMm maculatum 
Poison Milkweed —Asclepias verticillata 
Poverty Weed —Iva axillaris 
Prickly Lettuce —Lactuca scariola 
Puncture Vine —Tribulus terrestris 
Perennial Ragweed —Ambrosia psilostachya 
Q 
Quackgrass —Agropyron repens 
R 
Ragweed —Ambrosia spp. 
Red Rice —Unpolished rice 
Red Sorell —Rumex acetosella 
Ribgrass —Plantago lanceolata 
Rippleseed Plantain —Plantago major 
Russian Knapweed —Centaurea picris (Iowa, 
Calif. & Wyo. Centaurea repens) 
Russian Thistle —Salsola pestifer 
S 
Scotch Thistle— (Ariz.-f) 
Silver Leaf Nightshade —Solanum elaeagnvjolium 
Sheep Sorrel —Rumex acetosella 
(Continued on page 161) 
Directory Section Index—Pages 2-4-6-8-10 
