CRUCIFERAE 



Lobularia maritima Desv. Sweet Alyssum. 



Along streets, an occasional escape from cultivation. Native of Europe. 

 Lepidium Draba L. Hoary Cress. 



Recently introduced, but locally naturalized and increasing. Los Angeles, in 

 Chinese gardens, J. W. Mjnthorn in 1910. Huntington Beach, Davidson in 1916. 

 Abundant in grain tields near Chino, Johnston in 1918. Smeltzer, Orange County, 

 Roy K. Bishop, lirst seen in 1911, now (1919) a troublesome weed in peat lands. 

 Ventura, a recent introduction, Essig in 1918. Local and infrequent in the state. 

 Native of Europe. 

 Lepidium perfoliatum L. Tumble mustard. 



Recently introduced, now widely distributed, but apparently nowhere abundant, 

 collectors usually noting single or few plants. Hollywood, Davidson in 1910, 

 Moxley in 1917. Orange, Mrs. Bradshaw. Point Loma, a single plant. Parish in 

 1913. Antelope Valley, Mojave Desert, Miss Marjory Shaw in 1917. Widely dis- 

 seminated, but not abundant throughout the state. The earliest reference seen 

 for the United States is as a ballast plant at New York in 1888.'- Native of Europe. 

 Coronymus didymus Ludwig. Wart Cress. 



Pasadena, Studebaker in 1901, the only southern station known; perhaps a waif. 

 Infrequent in the state. Native of Europe. 

 Capsella bursa-pastoris Medic. Shepherd's Purse. 



A winter and spring annual, everywhere abundant in orchards, gardens and 

 waste grounds. In the Mojave Desert, rare at Victorville and Needles in 1913. 

 Native of Europe. 

 Camelina sativa Crantz. False Flax. 



In a grain fields, Redondo, McClatchie in 1897, the only southern record. Ap- 

 parently rare in the state, but in Oregon it was early introduced in the Columbia 

 River settlements, where in 1843 it was reported to be rank in the grain fields. ^^ 

 Native of Europe. 

 Raphanus Rhaphanistrum L. Jointed Charlock. 



In the south a rare weed in waste places. Los Angeles, "two plants," Davidson 

 in 1902. San Diego, Cleveland in 1903. Colton, "a single plant," Reed in 1908. Proba. 

 bly a recent introduction into the state. San Francisco, 1894, and still rare in 

 1911,-" but now frequent in that region. Parish in 1918. An abundant street weed 

 at Pacific Grove in 1917, as is the next species. Native of Europe. 

 Raphanus sativus L. Radish. 



Naturalized in waste and cultivated grounds; often abundant and injurious in 

 grain fields. A recent introduction in the south. Infrequent at San Bernardino 

 as late as 1896. Throughout the state. According to Hilgard "one of the common 

 weeds of Berkeley" in 1910, while R. Raphanistrum was "not present." Native of 

 Europe. 

 Brassica alba Boiss. White Mustard. 



Reported as "not uncommon" at Santa Monica, by Hasse in 1890, but' not seen 

 by more recent collectors, and perhaps an erroneous determination. Native of 

 Europe. 

 Brassica adpressa Moench. 



Locally and sparingly naturalized. San Bernardino, rare in 1914, and little in- 

 creased in 1918. Streets of Los Angeles, Davidson in 1909, and "fairly common" 

 in 1913. Rather common in a few localities in Redlands in 1918. An abundant 

 street weed in the San Francisco region. Native of Europe. 

 Brassica campestris L. Rutabaga. 



Freely naturalized in fields and waste places and along roads. Native of 

 Europe. 

 Brassica Napus L. Rape. 



.■\ waif in a field at Highland, San Bernardino valley, in 1917. Not otherwise 

 reported from the state. Native of Europe. 

 Brassica nigra Koch. Wild Mustard. 



Abundantly naturalized as a ruderal weed and in grain fields. In the coastal 

 district, in the rich adobe soil of the hills and mesas, it often covers wide areas 

 with a close growth 5-10 feet high, excluding all other vegetation. It is sometimes 

 harvested for the seed. In the Colorado IDesert a few plants were seen by the 

 roadside in Imperial Valley in 1913. In the Mojave Desert, at Surprise Canon, 

 Coville & Funston in 1891. Native of Europe. 



It was certainly introduced during the Mission era, and there is a persisting 

 tradition among some Spanish-speaking Californians that the mission fathers were 

 accustomed to carry the seed with them, and to sow it by the wayside. This seems 

 improbable, but the fathers no doubt grew the plant in their gardens, as the 

 young leaves are relished by the Mexicans, and others, too, as a pot herb. - The 

 seeds would be scattered by the small birds, who freely eat them. 



-Cat. Anth. & Pterid. within 100 miles of N. Y. 78. 

 ••<-Geyer, C. A. In London Tour. Bot. 5:512. 1846. 

 •■■•Jepson, W. L. Fl. W. Mid. Cal., 2d Ed. 185. 1911. 



