HALSTED'S AMERICAN WEEDS 



A Century of Weed Seeds. 



Banunculace« — Crowfoot Family. 



1. Ranunculus bulbosus,* L. Buttercup. P.f 



Cruclferjs - Mustard Family. 



2. Barbarea vulgaris, R.Br. Yellow Socket. B. 



3. Bkassica nigea, (L.) Black Mustard. A. 



4 Bkassica Sinapistkum, Buiss. Charlock. A. 



5. Buesa pastobis, (L. ) Shepherd's Purse. A. 



6. Lepidium campestee, (L. ) Field Pepper-grass. A. 



7. Lepidinm Tirginicnm, L. Pepper-grass. A. 



8. Kaphanus Eaphanisteum, L. Wild Badisli . A. 



9. Sisymbeitjm officinale, (L.) Hedge Mustard. A, 



Caryophyllaoe.31 — Pink Family. 



10. Aoeostemma Githago, L. Corn Cockle. A. 



11. Saponabia officinalis, L. Bouncing Bet. P. 



Portulacaoejs — Purslane Family. 



12. Potulaca olebacea, L. Purslane. A. 



Malvace.e — Mallow Family. 



13. Abutelon Avicenn;e, G-sertn. Velvet-leaf. A. 



14. Hibiscus Tkionum, L. Bladder Ketmia. A. 



15. Malta eotundifolia, L. Mallow. P. 



Geraniace^: — Geranium Family. 



16. Eeodium cicutaeium, L'Her. Storksbill. A. 



Leguminosjj — Pea Famity. 

 17 Cassia Chama>crista, 1,. Partridge Pea, A. 



18. Crotalaria saglttalis, L. Battle-box. A. 



19. Medicago lupulina, L. Nonesuch. B. 



20. Mtlilottjs alba, Lam. White Mililot. A- B 



21. Mililotus officinalis, Willd. Sweet Clover. A-B 



Bosaceje — Rose Family. 



22. Agrimonia Eupatoria, L. Agrimony. P. 



OsAGKACEiE —Evening Primrose Family. 



23. (Enothera biennis, L. Evening Primrose. B. 



Passiflorace2£ — Passion-flower Family. 



24. Passiflora incarnata, L. May-pops. P. 



Ficoide^; — Carpet-weed Family. 



25. Mollugo verticillata, L. Carpet-weed. A. 



Umbellifer2e — Parsnip Family. 



26. Daucus Caeota, L. Wild Carrot. B. 



27. Pastinaca sativa, L. Wild Parsnip. B. 



Ptjbiaoe^e — Madder Family. 



28. IModia teres, Walt. Buttonweed. A. 



Dipsace^ — Teasel Family. 



29. Dipsacus sylvestbis, Hud. Teasel. B. 



Composite — Sunflower Family. 



30. Achillea Millefolium, L. Yarrow. P. 



31. Ambrosia artemisiaefolia, L. Bagweed. A, 



32. Ambrosia trifida, L. Great Bagweed. A. 



33. Amhimis aevensis, L. Chamomile. A. 



34. Anthemis Gotula, L. Mayweed. A. 



35. Aeotium Lappa, L. Burdock. P. 



36. Bidens oipinnata, L. Spanish needles. A. 



37. Bidens frondosa, L. Beggars-ticks. A. 



38. Chrysanthemum Lett can themum , L. Daisy. P. 



39. Cichobium Intybus, L, Chicory. P. 



40. CtsrcrjB abveksis, (L. ) Canada Thistle. P. 



41. Erechthites hieracifolia, (L.) Fiieweed. A. 



42. Erigeron animus, Pers. Fleabane. A. 



43. Erigeron Canadensis, L. Horse-weed. B. 



44. Erigeron ramosns, Walt. Eongh Fleabaue. B. 



45. Hieeacitjm aukantiacum, L. Golden Hawkweed. I 



46. lactuca Canadensis, L. Wild Lettuce. B. 



47. Lactuca Scaeiola, L. Prickly Lettuce. B. 



48. BudbicMa hirta, L. Cone-flower. P. 



49. Solidag-0 lanceolata, L. Narrow golden-rod. P. 



50. Solidago riglda, L. Stiff golden-rod. P. 



51. Sonchus oleeaceus, L. Sow thistle. A. 



52. Taraxacum officinale, Web. Dandelion. P. 



53. Vernonia Noveboiacensis, Willd. lion-weed. P. 



54. Xanthium Canadense, Mill. Cocklebur. A. 



55. Xanthium spini'Sum, L. Spiny Clotbur. A. 



ApocYNAOEiE — Dogbane Family. 



56. Apocymim cannabinum, L. Dogbane. P. 



AscLEPiADAOEfi — Milkweed Family. 



57. Asclepias Syriaca, L. Milkweed. P. 



BorraginacejE — Borage Familj'. 



58. Cynoglossum officinale, L. Hound's-tongue. B. 



59. Echinospeemum Lappula, L. Stick-Beed. B. 



60. Echium vulgaee, L. Blue-weed. B. 



CoNvoLVTJLACEiE — Morning-glory Family. 



61. Convolvulus aevenbe, L. Bindweed. P. 



62. Ipomcea hedeeacea, Jncq. Morning-glory. A. 



Solanaces —Night-shade Family. 

 Datuea Steamonium, L. Thornapple. A. 

 Datuea Tatula, L. Purple Thornapple. A. 

 Physalis Virginiana, Mill. Ground-cherry. P. 

 Solan cm Dulcamaea, L. Bitter-sweet. P. 



Scrophtjlariacejs — Figwort Family. 

 Linabia vulgaeis, Mill. Toad-flax. P. 

 Veebascum Blattabia, L. Moth Mullein. B. 

 Veebascum Thapsus, L. Mullein. B. 



OROBANCHACEiE — Broom-rape Family. 

 Oeobanche kamosa, L. Broom-rape. A. 



Bignoniaceje — Biguonia Family. 

 Tecoma radicans, Juss. Trumpet-flower. P. 

 Verbena hastata, L. Blue Vervain. P. 

 Verbena urticsefolia, L. Vervain. P. 



Labiatjs — Mint Family. 

 Brnnella vulgaris, L. Heal-all. P. 

 Leonubus Caisdiaca, L. Motherwort. P. 

 Nepeta Catabia, L. Catnip. P. 



Plantaginaceji — Plantain Family. 

 Plantago lanceolata, L. Bib-grass. P. 

 Plantago majoe, L. Common Plantain. P. 

 Plantago Rugelii, Dec. Native Plantain. P. 



Amarantacile — Pigweed Family. 

 Amaeantus albus, L. Tumble-weed. A. 

 Amaeantus chloeostachys, Willd. Amaranth. A. 

 Amaeantus paniculatus, L. Branched Pigweed. A. 

 Amakantus eeteoflexus, L. Pigweed. A. 



Chenopodiacejs — Goosefoot Family. 

 Chenopidium album, L. Goosefoot. A. 



PnTTOLACOACEiE — Pokeweed Family. 

 Phytolacca decandra, L. Pokeroot Scoke. A. 



Polygon ACEiE —Smartweed Family. 

 Polygonum Convolvulus, L. Black Bindweed. A. 

 Polygonum Pennsylvanicum, L. Smartweed. A. 



BUMEX ACETOSELLA, L. Sorrel. P. 



Edmex ceispus, L. Curled Dock. P. 

 Rumex obtusifolius, L. Bitter Dock. P. 



91. 



92. 



93. 

 94. 

 95. 

 96. 

 97. 

 98. 

 99. 

 100. 



Eupho rbi ACEiE — Spurge Family. 

 Euphorbia maculata, L. Spotted Spurge. A. 

 Euphorbia Preslii, Ghiss. Spurge. A. 



GRAMiNEin — Grass Family. 

 Agbopyeum bepens, L. Quack-grass. P. 

 Bromus secalinus, L. Chess. A. 

 Cenehrus tribuloides, L. Bur grass. A. 

 Panicum capillare, L. Witch-grass. A. 

 Panioum Ceus-galli, L. Barnyard-grass. A. 

 Panicum sanguinale, L. Crab-grass. A. 

 Chamseaphis glauca, (L.) Fox-tail. A. 

 Chamsraphis vieidis, (L. ) Green Fox-tail. A. 



* The botanical names of introduced species are in small capitals and those of native weeds in full lace type. 

 fP indicates that the species is perennial; A, annual, and B, biennial. 

 DECEMBER, 1892. 



