OF MARINE COASTS. 101 



leaves alternate, often distant, sheathing at the base, lanceolate, nearly 

 linear, entire or pinnatifid, 25 cm. long; flowers j'ellow. 



Widely dispersed. West coast of Europe, from S'pain (Cadiz) to 

 Denmark, and Norway (Sognefjord), South Africa, Australia (New 

 South Wales to Western Australia), Tasmania, New Zealand, Chatham 

 Islands, California (supposed by Behr to be introduced), Chili and 

 Brazil. Occurs in wet places among the dunes. 



C. 'perpimlla Hook. f. and C. Traillii Kirk 

 are two other species occurring occasionally on blown sand in New 

 Zealand (Kirk). 



Dioiis maritima Cass. 

 Perennial rootstock, creeping; stems branching at base, hard, 20 — 30 

 cm. high, covered with a dense, white. tomentum; leaves alternate, oblong, 

 entire, 1 cm. long; flowers yellow. 



A plant nearly related to Achillea. Occurs on maritime sands of 

 Europe, from the Mediterranean to the British Islands. 



Ericameria ericoides (Less.) Nutt. 



Low evergreen shrub, with decumbent or ascending main stems and 

 numerous erect branchlets; foliage punctate, resinous; leaves linear- 

 terete, 2 — 5 mm. long, fascicled; flowers yellow. 



Common on sand dunes of California. 



Erigeron acris L. 

 Common on established dunes in Europe, but not confined to coast. 



E. glaucus Ker. 



Perennial herb, with mostly entire leaves, stem very leafy at base, 

 the eauline leaves much reduced, flowering stems erect, 10 — 25 cm. 

 high, commonly one-headed, arising from a radical tuft of leaves 

 crowning the fleshy eaudex and often from rosulate offsets terminating 

 prostrate woody branches; stems pilose pubescent; leaves finely pubes- 

 cent, spatulate, obovate, entire, rarely with a small tooth on either side 

 below the apex, 2 — 8 cm. long, upper eauline small and scattered. 



Coast of California. Abundant on dunes at S'an Francisco. 



Eriofhyllum staechadifolium Lag. 

 Suffruticose plant, 6 — 10 dm. high; leaves alternate, pinnately parted 

 into 5 — 7 lobes, the margins revolute, and the under surface white with 



