February 15, 191 7 4' 3 



OXALIDACEAE Lindl. Wood sorrel Family. 

 OxAUS L. Wood sorrel. 



OxALlS OREGANA Nutt. 4. Orecron wood sorrel. In tnoisi 

 shady woods, Cornell road, St. Helen's road, etc April to June. 

 White with purple veins. 



OXALIS TRILI.IIFOLIA Hook. 4. Tall wood sorrel. Infre- 

 quent on moist creek banks, Balch creek, Holbrook creek, Logie 

 trail, etc. April to June. White. 



OXALIS SUKSDORFII Trelease. 4. Western yellow wood 

 sorrel. Rather handsome native "weed," not uncommon in open 

 woods, waysides, cut banks and borders of fields, Albina, East 

 Portland, Mt. Tabor, Mt. Scott, Division street, etc. April to 

 November. Yellow. 



X OXALIS STRICTA L. 4. Fragrant wood sorrel. Ballast 

 grounds and waste places. Lower Albina, etc. Advenlive from 

 the eastern states. Yellow with reddish base; fragrant. 



LINACEAE Dumort. Flax Family. 

 LiNUM [Tourn.] L. Flax, 

 LiNUM usiTATissiMUM L. 1. Common fl a X. Infrequent in 

 fields, roadsides and waste places, L- & C. fair grounds, IMt. Tabor, 

 Sandy Boulevard, etc. Introduced from Europe. Flax was first 

 introduced into Oregon from Indiana by James Johnson, a pio- 

 neer who crossed ihe plains in 1844 and planted it near Lafay- 

 ette, Yamhill county, in 1854, May to September. Blue, fuga- 

 cious. 



RUTACEAE Juss. Rue Family. 

 RuTA [Tourn.] L. Rue. 

 X RuTA GRAVEOLENS L- 4. Common rue. Occurs spar- 

 ingly ill open grassy places and vacant lots. Goldsmith's Addi- 

 tion, Lower Albina, etc. Probably a garden escape. Introduced 

 from Europe. June to August. Yellow. 



EUPHORBIACEAE J. St. Hil. Spurge Family. 

 Euphorbia L. Spurge. 

 Euphorbia serpyllifolia Pers. r. Thyme-leaved spurge. 

 Grassy glades alongWillaniette river, Bridgeton, Columbia Beach, 

 Haydeu islaud, etc. May to September. Apetalous, minute. 



