116 THE SAND STBAND FLOBA 



Marine sands of temperate Europe, Western Asia, and North Africa. 

 Introduced to Australia, where also found on roadsides in Victoria, 

 South Australia, and Tasmania. 



P. hirtella H. B. K. 

 Acaulescent perennial, with thick root, pubescent herbage; leaves 

 oblong-lanceolate, 7 — 30 cm. long, 2 — 3 cm. wide. 



Coast of California, mostly on clay-bluffs, or in moist alkaline soil 

 away from coast. 



P- lanceolata L. 

 Perennial; rootstock short, woody; leaves erect, spreading, lanceolate, 

 5 — 10 cm. long, somewhat hairy, tapering into a petiole at base. 



Common in Europe and temperate Asia, whence introduced to many 

 parts of the globe. Not confined to sea coasts, but occurs frequently 

 on marine sands. 



P. maritima L. 

 Low perennial herb, with fleshy linear leaves, pointed, entire or 

 slightly toothed. 



Marine coasts of Europe, Asia, South Africa, Patagonia, North 

 America (along the Atlantic and Pacific Oceans). Occasionally inland 

 in Europe in high mountains. 



P. psyllium L. 

 Annual herb, with erect branched stem; leaves narrow linear-lanceo- 

 late, pubescent. 



Common in the Mediterranean countries. Occurs often on the sea 

 shore sands, but is not confined to these. 



NYCTAGINAOBAE. 



Abronia latifolia Esch. 



Perennial, succulent herb with stout stems, 3 — 6 dm. long, prostrate, 

 only leaves and flowering peduncles ascending and erect; leaves broadly 

 ovate to suborbicular, broader than long, truncate at base, 1 — 4 cm. long; 

 petioles longer than leaves; calyx yellow. 



Sand dunes on coast of California from Monterey northward. 



A. maritima Nutt. 

 Stout, prostrate, pubescent, viscid; leaves thick, broadly ovate, 

 rounded at base, 3 cm. long, petioles short, flowers red. 

 Coast of California from Santa Barbara to S'an Diego. 

 Greatly resembles previous form in habit. 



