CYPERACEAE 

 Cyperus esculentus L. Chufa. 



A troublesome weed in a few gardens, San Bernardino, Parish in 1882. Los An- 

 geles, Braunton m 1902. Abundant at Covina, Azusa and El Monte, Johnston in 

 1918. Native of Eurasia. 

 Cyperus rotundus L. Nut-grass. 



Santa Ana river-banks, near Colton, in sand, Parish in 1891. A troublesome 

 weed in orange orchards. Upland, Johnston, and Riverside, Reed, both in 1918. 

 Not reported from other parts of the state, but to be expected. Said to have first 

 reached the United States with plants brought from Cuba to New Orleans. Native 

 of tropical America and Europe. 

 Cyperus virens Michx. 



In central California this sedge is considered indigenous, and so appears, but 

 at San Bernardino it is certainly an introduction. A single plant appeared on the 

 banks of Warm Creek, at the Mill street bridge, in 1907. The species is now 

 abundant along ditches and by streams, throughout the valley. 



PONTEDERIACEAE 

 Eichornia crassipes Solms. Water Hyacinth. 



An occasional fugitive from cultivation. San Gabriel River, "established for a 

 few years," Mrs. Lawrence in 1907. Los Angeles River, near Hynes, Davidson in 

 1904. Reservoir near Harlem Springs, .San Bernardino Valley, and escaping down 

 the spillway into W arm Creek, Parish in 1917. Native of tropical America. 



LILIACEAE 

 Asparagus officinalis L. Asparagus. 



An occasional fugitive from cultivation, often becoming established in damp 

 soils. Birds eat the berries and disseminate the seeds. Native of Europe. 

 Asphodelus fistulosus L. 



A waif, escaped from cultivation at a Mexican settlement, Bryn Mawr, near 

 Redlands, G. Robertson in 1909. Native of the Mediterannean region. 



URTICACEAE 

 Cannabis sativa L. Hemp. 



A waif in an orange orchard at Upland, Johnson in 1918. Recently hemp has 

 been cultivated in central California, but not in the south. Native of Asia. 

 Urtica urens L. Small Nettle. 



A frequent weed in gardens and other cultivated grounds, and in waste places. 

 Long naturalized throughout the state. Ventura, Brewer in 1861. Native of Europe. 



POLYGONACEAE 



Polygonum aviculare L. Knotgrass. 



Abundantly naturalized on roadsides, about houses, in farmyards and waste 

 grounds, but not in unbroken soils; probably early introduced. In the Mojave 

 Desert, at Mojave Station, in 1915. Native of Eurasia. 

 Polygonum Convolvulus L. W^ild Bvickwheat. 



Infrequent and local. Pasadena, McClatchie in 1894. Los Angeles, Davidson in 

 1894. Apparently commoner in central California; reported as "becoining com- 

 mon" at San Francisco in 1891.'^ 

 Fagopyrum esculentum Moench. Buckwheat. 



Roadside casual at La Verne, Los Angeles Co., Johnston in 1918. Buckwheat 

 is not cultivated in southern California. Native of Europe. 

 Rumex Acetosella L. Sheep Sorrel. 



Adventive in lawns. Long Beach, Parish in 1891. Pasadena, "a few plants," 

 Davidson in 1890. "Quite common in yards and by roadsides," at Claremont and 

 Pomona, Johnston in 1918. Abundant at Santa Barbara, Parish in 1916. Riverside, 

 Reed in 1918. Apparently recently naturalized in the south, where it is increas- 

 ingly frequent in the coastal region. It is an abundant city weed in the Mon- 

 terey district and about San Francisco, where it was reported as "common," by 

 Hilgard in 1890. This widely distributed plant was found already established, if 

 early records are to be credited, when the Pilgrims landed at Massachusetts Bay." 

 Native of Europe. 

 Rumex conglomeratus Murray. Green Dock. 



Abundantly naturalized in damp soils m cultivated and waste grounds. In the 

 Mojave Desert, on the river banks at Victorville in 1916. This^ species and the 

 next are common throughout the state, and probably were early introduced. Both 

 are natives of Europe. 

 Rumex crispus L. Yellow Dock. 



Equally abundant in the cismontane region as the preceding species, and in 

 like habitats. In the mountains it is infrequent about camps. Bear Valley, 6,500 

 ft. alt.. Parish in 1917. In the Mojave Desert it is an infrequent weed. Barstow, 

 Parish in 1915. and river banks at Victorville in 1916. Surprise Canon, Hall & 

 Chandler in 1906. 

 Rumex pulcher L. Fiddle Dock. 



".Soaringly introduced" at Inglewood, Los Angeles County, Abrams, about 

 1904, the only southern report. In central California a common weed of roadsides 

 and waste places. San Jose and Berkeley, in 1919. Native of Europe. 



'^Brandegee K. Zoe 2:371. 1892. 



'■^See note to Radicula nasturtium-aquaticum. 



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