OP MABINE COASTS. 77 



Hibbertia grossulariaefolia Salisb. 



Shrub, with weak, prostrate stem; leaves small, alternate, with a 

 prominent midrib underneath, flat, petiolate, ovate, mostly coarsely 

 toothed, 2 — 4 em. long, glabrous above, pubescent underneath; flowers 

 pale yellow. 



Occurs together with several other species of the same genus on 

 sands near the mouth of Swan Eiver, West Australia. 



CRUOIFERAE. 



Cahile americana Nutt. 



Annual herb, with deep root, decumbent stems up to 1 m. long, fleshy 

 leaves, obovate, obtuse, erenate or sinuate toothed; flowers "small, purp- 

 lish. Pod fleshy, dry and corky when ripe. 



Sandy shores of east and west coast of North America. Also along 

 the Great Lakes. 



C. maritima Scop. 



Annual herb, with often meter deep root; stem much-branching, 

 hard at base, erect-decumbent; leaves few, fleshy, with oblong lobes; 

 flowers purplish or white. 



On all seacoasts of Europe and Western Asia, North Africa, North 

 and South America, extratropical Australia. 



Crambe maritima L. 



Perennial herb, glabrous, glaucous, with branched stems, 0, 5 m. 

 high; leaves petiolate, large, thick, oblong, undulate, and coarsely 

 toothed, upper leaves small; flowers white; pod globular, indehiseent, 

 with one seed. 



Sandy and gravelly seashores of Baltic, Western Europe, and Black 

 Sea. 



Erysimum capitatum (Dougl.) Greene. 



Perennial herb, stout, erect, 15 — 45 cm. high, leafy, finely pubescent; 

 leaves narrow, entire; flowers cream-colored. 



Seashores of California. 



Malcolmia litorea E. Br. 



Suffrutescent ; leaves obovate-oblong, obtuse, coarsely toothed, cov- 

 ered with a dense grayish tomentum. 



On maritime sand dunes of Western Mediterranean. Several other 

 species of the same genus occur on the dunes of that region. 



