PIPER FLORA OF THE STATE OF WASIIIXUTON. -15 



SEASHORES. 



Iiunu'dicitc proximity to the sea furnishes conditions that support 

 a strij) of ve<j;etation consisting" t)f few but Aery characteristic s[)ecies. 

 On the A\ ashington coast there are two marked formations — the sand 

 dunes and the sah marshes. 



Tv[)ical sand dunes are conlined to the ocean coast, not occurring 

 on Puget Sound. The important sanddoving phuits are: 



Abroiiia hit i folia. Latlujnis lift oralis. 



Abronia niiiheUata. Litplmm litioralis. 



Carex inacrocephula Foa mucruiitlia. 



GlcJinia littoralla. Tanacctiuii huroimt.sc. 



Less abunthmt. but not less characteristic, are: 



Agoscri.s iiutritiiiia. I'oifdcaciia ntiiiosissiiiKt. 



Carex pansa. I'ou coiifinis. 



Gaertncria chattii-sxonis. Polijiioniuii iiaroiu/cliia. 



Jiniciis Icsoiirii. tSaiiiciiJd lioircllii. 



In the lee of the dunes or on shores where the sand does not drift 

 there is often a strip of black pine {P'tiiiis contorta) ,.fov\\\n\<y dense 

 thickets, the trees seldom o\er 80 feet high. Where not timbered 

 various species adapted to campestrine conditions abound, but few of 

 them are confined to the seashore. Such are: 



AnjrntUia (iiisoiini. I'rai/arid cliUocuxis. 



Carduus ccltilis. Tri folium worm.'ikioldii. 



Cerastium arvense. Viola adunca. 

 Fetttuca rubra. 



Intermediate in character between these meadowy beaches and sand 

 dunes are sand spits and high, sandy beaches. These maintain, in 

 consequence, a rather mixed flora. 



Salt or brackish marshes are most commonly found on low shores, 

 especially near the mouths of streams, where they are at least occa- 

 sionally covered l)y high tides. They often occur also behind high 

 sea beaches. Most of the plants are those which love a saline soil. 

 The most characteristic are saltgrass {DisticliliH sp/cata) and glass- 

 wort {Sallcornia amhUjaa), the latter often infested with a dodder 

 {Cusciita sqitamiget'o) . 



A portion of the plants found in these seashore marshes are con- 

 fined to the immediate i)roximity of the sea. Such are : 



Ammodenia licploidcu. Jauinca carnosa. 



Atriplex Uttoralis. Latlu/rus niaritiiiiu.'i. 



Carex cryptocarpa. Ortliocarpus castiUrioidr.-i. 



Coelopleurum maritiiiium. Sidalcca hoidersoni. 



Conioselinum fisclicri. Tissa marina. 



Others occur also in alkaline marshes in the interior, such as Juncus 

 halticus^ Glaux niar'd'tiiia.^ and T rUjlochln inarlt'ununi. 



