155 



21. Acer macrophyllum Pursh. Not mature. 



22. Epilobium adenocaulon Haussk. Very common. 



23. Epilobium angustifolium L. Very common. 



24. Gilia capitata Hook. Very common. 



25. Symphoricarpos albus L. Blake. Common in wooded districts. 



26. SoUdago lepida DC. Indigenous northward. 



27. Aster Douglasii Lindl. Abundant. 



28. Anaphalis margaritacea (L.) Benth. & Hook. Abundant. 



29. Gnaphalium purpureum L. Occasional in low ground. 



30. Fran^eria bipinnatifida Nutt. Common along the coast. 



31. Artemisia Tilesii Ledeb. Indigenous northward and in the mountains. 



32. Hieraciuvt canadense Michx. Very rare. 



Group 2. Introduced Species Occurring Elsewhere in Oregon 



33. Digitaria sanguinalis (L.) Scop. Beginning to appear in lawns. 



34. Phleum pralense L. A common escape. 



35. Agrostis alba L. Very commori. 



36. Polypogon monspeliensis (L.) Desf. Not infrequent. 



37. Holcus lanalus L. One of our commonest grasses. 

 3S. Avena saliva L. A common escape. 



39. Cynodon Dactylon L. Scarce; rarely flowers in other localities. 



40. Dactylis glomerata L. Very common. 



41. Poa annua L. Abundant on lawns and in waste places. 



42. Poa compressa L. Common in dry soil. 



43. Poa pratensis L. A common escape. 



44. Bromus hordeaceus L. Very common. 



45. Bromus maiginatus Nees. Perhaps the same as No. 12. 



46. Bromus rubens L. Rare in waste places. 



47. Bromus secalinus L. Very common. 



48. Bromus tectorum L. Rare in waste places. 



49. Bromus villosus Forsk. Not infrequent. 



50. Lolium mulliflorum Lam. Very common. 



51. Lolium perenne L. With the last, and equally common. 



52. Hordeum muiinum L. Very common about towns. 



53. Triticum vulgare L. A common escape. 



54. Asparagus officinalis L. Rather infrequent. 



55. Rumex Acetosella L. Very abundant — a pernicious weed. 



56. Rumex conglomeratus Murr. Infrequent. 



57. Rumex crispus L. Abundant. 



58. Rumex obtusifolius L. Common about dwellings. 



59. Polygonum aviculare L. Abundant in door-yards, etc. 



60. Polygonum Convolvulus L. Common in cultivated ground. 



61. Polygonum Hydropiper L. Common in low ground. 



62. Polygonum Persicaria L. Abundant. 



63. Chenopodium album L. A troublesome garden weed. 



64. Chenopodium ambrosioides L. Occasional on sand-bars along the Willamette. 



65. Salsola Kali L., var. tenuifolia Mey. Beginning to appear in waste ground. 



66. Spergula arvensis L. Common in cultivated ground. 



