60 (55) Plants forming compact cushions 1.5-3 dm high on sand 

 dunes; somewhat woody at base; leaves tiny, scalelike, 

 closely imbricated (covering base of leaf above), pubes- 

 cent; flowers bright yellow, sessile; plants of secondary 



dunes and hollows between dunes Hudsonia tomentosa. 



Poverty Grass of Thoreau, Dune Heather 

 (H. ericoides on some dunes) 



Figure 64. — Stem, leaves, 

 and flowers X2. 



60 (55) Plants not forming compact hoary cushions on dunes 61 



61 (60) Plants with simple lobed leaves 



61 (60) Plants with simple leaves, not lobed, linear-lanceolate to deltoid (triangular). 



62 

 69 



62 (61) Plants with palmately lobed leaves, 

 broadly ovate, three-lobed, lower sur- 

 face covered with light pubescence; 

 stems woody with large pith (middle 

 one-half of stem) ; large pink flowers, 

 to 10 cm broad; fruit a capsule; plants 

 of brackish fringe of the tidal marsh. 



Hibiscus pcUtistris, 



Marsh Mallow 



Figure 65.— Leaf X % 



62 (61) Plants with pinnately lobed leaves, not cut to the midrib. 



63 



28 



