OF MARINE COASTS. 119 



Chenopodium californicum Wats. 



Perennial, stout, erect or decumbent at base, 4 — 7 dm. high from 

 a large simple or branched root; herbage green, very little mealy; leaves 

 broadly triangular, truncate or cordate at base, unequally sinuate-dentate, 

 3 — i cm. long, petioles 2 — 10 cm. long. 



Sand dunes of California from Pacific Grove southwards, but is not 

 confined to the coast. 



Gh. glaucum L. 



Much-branched, diffuse annual, prostrate at base, stems ascending 

 3 — 6 dm., glabrous, striate, furrowed; leaves petiolate, the lower lance- 

 olate, coarsely sinuate-toothed, 1 — 4 cm. long, the upper gradually 

 smaller, narrower, almost entire, all green above and whitish underneath. 



On middle beach of sea coasts in Europe, temperate Asia, Australia, 

 Tasmania, New Zealand. 



Other species of this genus are often found on coastal sands, but 

 are not confined to these locations. 



Kochia hirsute, Nolte. 



Annual, with erect, ascendent or procumbent stems; leaves terete, 

 filiform. 



S'ea shores and saline places in France, Belgium, Denmark, Northern 

 Italy, and some places along the Baltic. Also in Western Asia. 



Several related species are found in Australia, both on coastal and 

 inland saline sands. At Port Adelaide, South Australia, Fremantle and 

 Albany, West Australia, the author found specimens belonging to this 

 genus, but was not able to identify them. 



Rhagodia Billardieri B. Br. 



Diffuse shrub, foliage fleshy, covered with mealy tomentum; leaves 

 alternate, linear or lanceolate, obtuse, petiolate, 1 — 3 cm. long, green 

 above and white underneath, margins recurved. 



Abundant on many places of the American coast, as in West 

 Australia, at St. Vincent's Gulf, S. A., in Victoria (Port Phillip). 

 Also found in New South Wales and Tasmania. 



Salicomia ambigua Michx. 

 Perennial succulent herb, with leafless, 12 — 30 em. long jointed 

 stems, from woody rootstocks, erect or decumbent and rooting at the 

 joints; herbage greenish; branches opposite; spikes slender, terminal, 

 not thicker than the sterile portions of the stem. 



