I909-] STRAND PLANTS OF NEW JERSEY. 87 



chlorenchyma cells are aligned as palisade. Sphgerocrystals are 

 abundant and the guard cells are depressed considerably (Fig. 29a). 



Hibiscus moscheutos (Plate V, Figs. 30 and 30a). — The swamp 

 rose-mallow is a tall perennial with showy rose pink, pink or white 

 flowers and alternate ovate, pointed leaves, sometimes 3-lobed with 

 a downy, whitened, under surface. The upper epidermal cells are 

 comparatively thin-walled, while the lower epidermis of thin-walled 

 cells is characterized by clusters of long, straight, pointed hairs 

 densely matted together. There are two rows of palisade cells 

 beneath which is found spongy parenchyma, while the guard cells of 

 the stomata are slightly raised above the general epidermal surface 

 (Fig. 30a). The leaf is a diphotophyll. 



Pluchea camphorata (Plate V, Figs. 31 and 310). — The salt 

 marsh fleabane is an annual with oblong-ovate, or lanceolate, slightly 

 petioled leaves. The stem and leaves are somewhat glandular, 

 emitting a strong, or camphoric, odor. The epidermal cells are thin- 

 walled and multicellular hairs abound on both surfaces. The sto- 

 mata are not depressed (Fig. 31a). The chlorenchyma in the form 

 of rounded cells is not differentiated into palisade and spongy paren- 

 chyma. A spongophyll. 



Eleocharis pygmcea {=E. nana) (Plate V, Figs. 32 and 32a). — 

 This small sedge formed small floating masses on the surface of the 

 salt water sloughs at Sea Side Park (Plate III, Fig. 4). The bristle- 

 like culms are tufted at the base and in section show large air canals, 

 or lacunae, surrounded by small thin-walled parenchyma cells. The 

 bundles are reduced in size and the epidermis is composed of small 

 thin-walled cells. A typic hydrophyte adapted to an halophytic 

 existence. 



General Conclusions. 



We have listed twenty plants among those which grow on the 

 sand strand and eleven which may be considered to be typic salt 

 marsh species. Out of the twenty strand plants four are suc- 

 culent, or twenty per cent., while out of eleven salt marsh species 

 six are succulent, or over fifty per cent., so that the salt marsh 

 species are preponderantly succulent. Only three of the salt marsh 

 plants studied have epidermal hairs, while nine of the strand plants 



