732 REPORT OF NEW JERSEY STATE MUSEUM. 



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, now 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 



Sclerolepis, 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. 



PL — 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. U. coelestinum, p. 738 



aa. Flowers pink. 



b. Leaves nearly smooth, inflorescence pyramadal. B. purpureum, p. 738 

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

 pink. B. maculatum, p. 733 



aaa. Flowers white, leaves usually opposite. 



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

 nearly so. 



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

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



hb. 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. B. perfoUatum, p. 737 



dd. Leaves clasping, bracts obtuse. B. resinosum, p. 737 



cc. Leaves not clasping nor perfoliate. 

 d. Leaves narrowed at the base. 

 e. Bracts of the involucre acute. 



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

 wide. B. 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. 



B. album, p. 734 



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



B. albutn subvenosum, p. 73s 



