Diplotnxis muralis DC. S.iikI Kockct. 



Will cstiiljlislud for half a block on Kiglitli slnil, S.ui lin n.ii .linn, in I'M), 

 |iirM>iinKi I'lil link' iiicicascil in 19-1). 

 Diplotaxis tcnuifolia DC. Wall Kuckct. 



l-.H-allv adviiitivc. I'a.satlcna, Grant m I'Ml, I'JO.S. Lcs .Xngck:,, Davidson 1895. 

 lnTsisting, l)Ut littk- incrcasud in 1920. Native of Europe. 

 Conringia orientalis Duniont. llare's-ear Mustaril. 



A lew pl.inl.s ill an orange orchard at L'pland, Johnston in 191«. Native of 

 KiiroiH'. riu' List three species are known from the state only as here noted. 

 Sisymbrium altissimum L. Tunible Mustard. 



A recent immigrant which has spread with great rapidity and is now thoroughly 

 naturalized, and in many pl.-iccs alnindant and pernicious, both in cultivated and 

 wil<l grounds. Hollywood, Davidson in 191(J, Laurel Canon in 1911, an<l .Sierra Madre 

 in 191J, in each case only a single plant, .San Bernardino, a single plant in 1912, 

 and <|uite abundant in a field at Redlands in 1913. In .San Antonio Mts. at 5,750 

 ft. alt., Johnston in 1917. Abundant along the roadside at Adclanto, Mojave Desert, 

 Parish in 1918. The lirst recorded appearance of this weed in North America was 

 at Castle Mountain, in the Canadian Rockies, in 1883.^" Native of Europe. 

 Sisymbrium Irio I. 



Well established in some orange orchards at Ujiland, Johnston in 1918. Not 

 otherwise known from the state. Native of Europe. 

 Sisymbrium officinale .Scop. Hedge Mustard. 



A ciimmon weed of roadsides and waste places; ascending the San Bernardino 

 and San .Antonio mountains to S,OiX) ft. alt. First appeared at San Bernardino 

 about 1885. Frequent throughout the state. Native of Europe. 

 Mathiola incana R. Br. Garden Stock. 



Escaped along the blufTs at Laguna Beach, Crawford in 1916. Carlsbad, "abun- 

 dantly escaped," L. Street. Native of Europe. 

 Radicula nasturtium-aquatica Britten & Rendle. Watercress. 



Abundantly naturalized about streams and springs; ascending the mountains 

 to at least 5,000 ft. alt. In the Moiave Desert at Victorville, Rabbit Springs, and 

 Postoffice .Springs in 1915, 1916. Native of Europe. The watercress may have 

 reached North America previous to European settlement. Its abundant seeds are 

 shed on the muddy banks whereon it grows, and may be carried to great distances 

 by migratory waterfowl, and by the same agency distributed from pool to pool, 

 as is probably the case with the seeds of other widely distributed aquatic plants. 

 It is reported in early accounts to have been growing about Massachusetts Bay 

 when the Pilgrims landed, or, at least, shortly after.-" There is more abundant 

 and satisfactory evidence of its establishment in Arizona and Southern California 

 before the earliest Spanish explorations. The contemporary account of Coronado's 

 famous expedition^" states that watercresses were "growing in many springs" at 

 Chichilticalli, an Indian village on the Gila, near which they camped in 1541, the 

 site of which has been identified with that of the modern .Solomonsville in Graham 

 County. The first Spanish entrance into California Alta was at San Diego, May 

 14, 1769, where the earliest Mission was founded. On the 14th of the ensuing July 

 an expedition was dispatched, under Don Caspar Portola, to expioie the unknown 

 wilderness to the north, which eventually, after a long and arduous journey, 

 reached and discovered the bay of San Francisco. Portola's own diary is brief 

 and bare, but the diaries of the chaplain, Fr. Pedro Crespi, and of the engineer, 

 Alferez Miguel Costanso, contain some interesting information concerning the 

 vegetation of the strange land through w-hich they passed. July 30th they were at 

 a place 39 leagues from San Diego, which they named Valle de San Miguel, satis- 

 factorily identifiable as the neighborhood of the subsequent Mission San Gabriel. 

 Here they camped by a runlet of water whose banks were covered with water- 

 cresses.'*" August 3rd, three leagues beyond the Los Angeles river, and in the 

 present San Fernando valley, camp was made in a grove of alders, by a spring 

 whose marshy borders were overgrown with watercresses and other herbs. ^'■' The 

 next day they were at two springs from which flowed a stream full of water- 

 cresses.^" They were in the same region on the return journey, and January 13th, 



3=Hill, E. S. In Torreya 9:96. 1909. 



•'""Also divers excellent pot-herbs grow abundantly, as . . . watercress, 

 Sorrel. Higginson, F. New England Plantation, 1630. Reprinted in Young's Chron- 

 icles first Planters Mass. Bay 246. Chron. Pilgrim Fathers 132, 165. Concerning 

 these records see Parish, S. B., in Rhodora 3:17, 1901, and Robinson, J. Ibd. 4:81, 

 1902. 



^Castanado, Pedro de. Narrative Exped. of Coronado, 1540-42, 1598. Eng. 

 Translation in Spanish Explorers in southern U. S. 349. 1907. 



"''"Sentamos el real junta a un zanja de agua corriente, cubiertos sus orillas de 

 berros v cominos." Costanso, M. Diario del Ciage de Tierra hecho al Norte de 

 la Cal. 1769-70. Publ. Acad. Pac. Coast Hist. 21:78. 1911. 



'""Era este un manantial dentro de un bagial . . . y estaba cubierto de 

 zacatal, olerosas herbas y berros." Costanso. Op. cit. 2:180. "L'n lunar de alisos 

 . . . y de esos sale un ojo de agua del grosor de un buey, y esta las orrillas enza- 

 catadas y vestidas de olerosas herbas y berros." Crespi, P. Viage de Tierra hecho 

 de San Diego a Monterey. In Palou, Xoticias de Neuva Cal. 2:125. .San Francisco. 

 1874. 



*''"Estan ambos poblados de berros." Crespi, Op. cit. 2:126. 



18 



