PLANTS OF SOUTHERN NEW JERSEY. 743 



d. Upper leaves abruptly smaller and appressed. 5. stricta, p. 746 

 dd. Upper leaves becoming gradually smaller, not appressed. 



S. speciosa 

 bbb. Heads in a terminal, usually large panicle ; secund on its spreading 

 or recurved branches. 



c. Plant maritime, leaves thick, fleshy, entire. S. sempervirens, p. 746 

 cc. Plants not maritime, leaves not fleshy. 



d. Leaves pinnately veined, not triple nerved. 



e. Leaves all entire, thin and glabrous, lanceolate. 



S. odora, p. 747 

 ee. Leaves, at least the lower ones, dentate or serrate. 

 f. Stem densely pubescent, leaves more or less so. 

 g. Leaves rugose, veiny, sharply serrate. 



S. rugosa, p. 747 

 gg. Leaves not rugose, only sparingly dentate, some 

 entire. S. Ustulosa, p. 748 



ff. Stem glabrous, puberulent, or pubescent only above. 

 g. Leaves very scabrous on the upper surface, ser- 

 rulate. S. patula, p. 748 

 gg. Leaves smooth, or minutely pubescent on the up- 

 per surface. 

 h. Racemes few, very slender, widely divergent. 



S. ulmifoUa, p. 748 

 hh. Racemes numerous, spreading, recurved or 

 ascending. 



i. Leaves all oblong or oblong lanceolate, 

 sessils. S. elliottii, p. 748 



a. Lower leaves, at least, petioled ; lanceolate 

 or ovate lanceolate. 



/. Leaves thin, lower cauline and basal 

 leaves abruptly narrowed to the pe- 

 tioled base. Heads 5-7 mm. high. 



S. arguta, p. 750 

 //. Leaves firm, lanceolate or ovate lan- 

 ceolate, tapering gradually to the base. 

 k. Panicle usually as broad as high, 

 rays 8-12. S. juncea, p. 750 



kk. Panicle usually longer than broad. 

 I. Plant more robust, leaves 

 broader, rays 3-8. 



S. neglecta, p. 749 



//. Plant slender, leaves narrower, 



rays 2-5. S. uniligulata, p. 750 



dd. Leaves triple nerved (i. e., a pair of lateral veins stronger 



than the others). 



e. Lower leaves much longer than the reduced upper ones, 



leaves firm, whole plant whitish with close puberulence. 



S. nemoralis, p. 751 

 ee. Leaves essentially uniform from base to summit, lanceo- 

 late, not whitish. 



