82 THE SAND STRAND FLOBA 



Endemic in Australia, where it occurs on drifting sands in Victoria, 

 South Australia, and West Australia. 



RUTACBAB. 



Oorrea alba Andr. 



Much-branched compact shrub, 3 — 12 cm. high, branches covered 

 with a hoary, brown-reddish tomentum; leaves ovate-obovate, obtuse, 

 1 — 3 cm. long, coriaceous, somewhat tomentose above, in age glabrous, 

 densely tomentose beneath; flowers pink. 



Common on sandy shores of Victoria and South Australia. 



RHAMNACBAB. 

 Ceanothus thyrsiflorus Eson. 

 Shrub, 1 — 2 m. high, much-branched; leaves green, oblong-obovate, 

 serrate, 2 — 6 cm. long; flowers blue. 



Coastal sands of California, but not confined to these situations. 



Discaria Toumatou Eaoul. 



Varying from a small thorny shrub to a 6 m. high tree ; leaves small, 

 usually glabrous, absent in old plants; branchlets reduced to opposite 

 woody spines, nearly 5 cm. long. 



Eestricted to New Zealand. 



ANACARDIACEAE. 

 Corynocarpus laevigatus Forst. 

 Evergreen, glabrous tree, with alternate, oblong leaves narrowed 

 into short, stout petioles. 



Very abundant on the coasts of New Zealand, but also found inland. 



LBGUMINOSAE. 

 Acacia retinoides Schleeht, and A. salicina Lindl. 

 are often among the species of this large genus, which occur on the 

 coastal sand formations of Australia, the former being common on dunes 

 in Victoria, the latter the most abundant form on the sandhills round 

 St. Vincent's Gulf in South Australia. A. pycnantha Benth. is recom- 

 mended as suitable for planting on drift sands. 



