OF MARINE COASTS. 127 



P. radiata Don. 

 is found only on the established dimes and immediately inland from 

 these at Pacific Grove, and within a limited area in two other similar 

 localities, one in San Luis Obispo county, one in S'anta Cruz county. 

 California. 



HYDROCHAEIDACEAE. 



Halophila ovalis Hook. f. 



Siibmerged marine plant, common on the shores of ^loreton Bay, 



Queensland, and Port Phillip, A'ictoria. Also in Tasmania. Xew South 



Wales, and South Australia, preferring muddy shores, but also on sand. 



IRIDACEAE. 



Sisyrrliincliium iellum Wats. 

 A somewhat prostrate, low form is found on the dunes at Point 

 Pines, Monterey, California, but it is not a different species, as it will 

 under cultivation in moist, rich soil exhibit exactly the same characters 

 as the inland form. This was tested by the author at Stanford Universitv 

 in the summer of 1904. 



AMARTLLIDEAE. 

 Pancratium maritimum B. 



Perennial herb, with large bulb: leaves erect, long, broadly linear, 

 glaucous. 



Sandy sea shores of Western France, Iberian Peninsula, and Mediter- 

 ranean countries. 



LILIACEAE. 

 Allium arenarium L. 

 Stem 25 — 35 cm. high, single; leaves cylindrical, hollow, furrowed 

 above, with long sheaths; flowers red. 



Sand in a few places on the Baltic coasts. 



A. schoenoprasum L. 



Stems 2 — 3 dm. high, usually many together; leaves narrow, cylin- 

 drical, hollow, one sheathing the stem at base. 



In Xorthern Europe and Asia, and in mountains in Southern 

 Europe. Britton & Brown (Flora of Xorthern United States and 

 Canada) say regarding its distribution in America : 



"Tn moist or wet soil, New Brunswick to Alaska, south to Elaine, 

 northern Xew York, ilichi2:an, Wyoming, and Washington." 



