114: THE SAND STKAND FLORA 



S. nodosa L. 

 Coarse, erect perennial found on moist plages in Europe, temperate 

 Asia, and parts of North America, often on the coast. 



Veronica macroura Hook. f. 

 On coast of New Zealand, but not confined to sand formations. 



v. longifolia L. var. maritima L. 

 is a perennial common on coasts of the Baltic, but occurs rarely on sand. 



VERBENACEAE. 



Avicennia officinalis L. 



Erect shrub of considerable height; branches, lower side of leaf and 



inflorescence white with a close tomentum; upper surface of leayes 



usually glabrous in age, black and shining when dry; leaves opposite, 



coriaceous, entire, ovate-lanceolate, 5 — 7 cm. long, acute, petiolate. 



Common in tropical Asia, Africa, Australia, and America, growing 

 in marshes and inundated sandy places. 



Vitex trifolia L. 



Low shrub, the branches, lower surface of leaves and inflorescence 

 white, undivided or of 3 — 5 leaflets, often white on both surfaces, usually 

 glabrous on upper side in age; flowers bluish. 



Common on tropical coasts of Asia, and Australia southward to 

 Moreton Bay. 



The variety obovata has a peculiar habit of growth on the beaches 

 along Gulf of Carpentaria. The black rope-like stems run over the 

 surface of the sands to a length of 10 m. or more, sending up shoots 3 

 dm. high at short intervals. (J. F. Bailey in letter.) 



MYOPORINEAB. 

 Myoporum viscosum E. Br. 

 Shrub, erect, 1 — 2 m. high, glabrous; leaves alternate, lanceolate or 

 ovate, tuberculate-giandular, obtuse, entire; flowers white. 



On coastal dunes of South Australia (St. Vincent's Gulf) together 

 with M. serratum K. Br. from wMch it does not differ much. The latter 

 is found in Tasmania, Victoria, South and West Australia. M. laetum 

 Forst. is common on some New Zealand coasts, and can easily be grown 

 on the middle beach. 



