128 THE SAND STRAND FLORA 



Asparagus officinalis L. 



Perennial, -svith creeping rootstock, and annual Ijranching stems, 

 erect, 3 — 6 dm. high; leaves short, subulate; flowers small, greenish 

 white. 



On marine sands of ^Yestern Asia, Mediterranean, and Western 

 Europe northward to English Channel; escapes to similar localities in 

 E. America,' according to Professor Dudley. 



JUNCACEAE. 



J uncus acuius L. 

 A form closely approaching /. maritimus Lam. and found on marine 

 sands on the Atlantic and Mediterranean coasts of Europe, and on the 

 Caspian Sea, but not on the Baltic or N"orth Sea, nor in the Southern 

 hemisphere. 



J . anceps Laharpe var. atricapillus Buch. 

 Eootstock creeping; stems erect, compressed, leafy. 

 Observed only between the dunes on the E. Friesian Islands off the 

 German shore of the J^orth Sea. 



J. haUicus Willd. 



Eootstock creeping; stems hard, 3 — 6 dm. high, cylindrical, leafless, 

 sheathed at base by brown scales. 



In high northern latitudes in Europe, Asia, and America, found as 

 far south in the United States as California. ISTot confined to coastal 

 sands. 



J. iufonius L. 



Small annual, pale-colored; stems numerous, tufted, 3 — 20 cm. high, 

 branching: leaves short, slender. 



Occurs almost everys^'here, and is common in moist places Ijetween 

 the dunes. 



J. capiiatus Weig. 



Annual, slender, tufted, 5 — 8 cm. high; stems numerous: leaves 

 short, slender. 



Marine sands of Southern Sweden, Northern Germany, Holland, 

 Western and S'outhern Europe. 



J. compressus Jacq. var. Gerardi Bab. 

 Perennial, with creeping rootstock; stems 30 — 45 cm. high, erect, 

 slender, compressed at base, with a few radical leaves, narrow, grooved. 



