732 REPORT OF NEW JERSEY STATE :vIUSEUM. 



the swamps were with difficulty penetrated. There was an 

 abundance, however, to occupy our attention, for all the choice 

 species seemed to have established themselves in the open. We 

 waded through thick, knee-high vegetation, now splashing 

 through water, nov/ sinking deep into oozing muck. There were 

 beds of white-fringed Orchids and the smaller orange species 

 (cristata), Orange and Pink Polygalas, Rhexias from pale pink 

 to deepest magenta, and hosts of sedges, grasses and rushes of 

 perhaps more interest than their more brilliant associates. And 

 in the shallow pools among the shorter sedges grew the 

 Sderolepis, rank upon rank of pink button-like heads, standing 

 clear of the water and supported upon stems whorled with slender 

 leaves, recalling the sterile stem of some Equisetum. 

 Fl. — Mid-July to early September. 



Pine Barrens. — Quaker Bridge, Batsto, Hammonton, Egg Harbor City, 

 Woodbine. 



Cape May. — Bennett, Cold Spring, Green Creek. 



EUPATORIUM L. 



Key to the Species. 

 a. Flowers blue. B. coelestinum, p. 738 



aa. Flowers pink. 



b. Leaves nearly smooth, inflorescence pyramidal. E. purpureum, p. 738 

 bb. Leaves very rugose, inflorescence depressed, flowers usually deeper 

 pink. E. maculatum, p. 732 



aaa. Flowers white, leaves usually opposite. 



b. Bracts of the involucre in i or 2 series, all of equal length or 

 nearly so. 



c. Leaves 50-120 mm. long, sharply dentate. E. ageratoides, p. 738 

 cc. Leaves 20-50 mm. long, blunt toothed. E. aromaticum, p. 738 



bb. Bracts imbricated in two or more series, the outer ones shorter. 

 c. Leaves clasping or connate-perfoliate at the base. 



d. Leaves perfoliate, bracts acute. E. perfoliatuni, p. 72>7 



dd. Leaves clasping, bracts obtuse. E. resinosum, p. 727 



cc. Leaves not clasping nor perfoliate. 

 d. Leaves narrowed at the base. 

 e. Bracts of the involucre acute. 



/. Leaves linear-lanceolate, sparingly toothed, 4-12 mm. 

 wide. E. leucolepis, p. 734 



ff. Leaves oblong or lanceolate, prominently toothed, 10- 

 40 mm. wide, bracts white, cuspidate. 

 g. Leaves not markedly 3-nerved, teeth coarse. 



E. album, P- 734 



gg. Leaves 3-nerved, teeth smaller and more regular. 



E. album subvenosutn, p. 735 



