OF MABINE COASTS. 81 



Common on sea shores in many temperate and subtropical countries. 

 Europe, temperate Asia, Australia, New Zealand, North America, and 

 some parts of South America. 



PORTULACACEAE. 

 Portulaca oleracea L. 

 Fleshy, prostrate annual, seldom exceeding 15 em., with succulent, 

 alternate leaves, glabrous, cuneate or obovate, obtuse; flowers sessile, 

 yellow, open only in sunshine; seeds many, capsule. 



One of the most common sandy sea shore plants in the tropics and 

 in most subtropical countries. Does not occur on California dunes. 



Glaytonia 

 is often represented on coastal sands by different species, C. (or Montia) 

 perfoliata Donn., for instance, at San Francisco, and C. aiistralasica 

 Hook. f. on sandhills near Dunedin, New Zealand (Kirk.). 



TILIACEAE. 



Triumfetta procuinbens Forst. 



Prostrate perennial; stems 6 — 12 dm. long, rooting at joints; 

 branches ascending, tomentose; leaves petiolate, ovate, obtuse, 2 — 5 cm. 

 long, entire, or divided into 3 or 5 lobes, glabrous above, tomentose 

 underneath; flowers yellow; fruit globular, 15 mm. in diameter, cov- 

 ered with prickles. 



Occurs on sandy sea shores of Queensland, most of the Pacific 

 islands, and in the Malayan Archipelago. 



LINACEAE. 



Linum monogynum Forst. 



Perennial, glabrous 'herb, woody at the base, branched or simple, 

 erect, 15 — 50 cm. high; leaves numerous, narrow, lanceolate, 1 — 3 cm. 

 long; flowers large, white. 



Eestricted to New Zealand, where chiefly littoral. 



ZYGOPHYLLACEAE. 

 Zygophyllum Billardieri DC. 

 Prostrate herb, much-branched; leaves fleshy, opposite, with two 

 distinct leaflets; these oblong or linear, 1 — 3 cm. long; stipules small; 

 flowers white. 



