MONOCOTYLEDONOUS OR ENDOGENOUS PLANTS. 569 



commonly bearded with club-shaped hairs. The iullowing 

 species are all tctrandrous, with a 2-parted style and a 

 3-celled capsule. 



E. DECANGULARE, L. Leavcs mostly rigid, varying from 

 lanceolate to linear-subulate, concave, obtuse ; scapes com- 

 monly several from a tliick and creeping rootstock, stout, 

 smooth, 10-1 2-furro wed; head (2"-7" in diameter) com- 

 pact, hemispherical, at length globose ; scales of the invo- 

 lucre numerous, small, oblong, acutish, closely imbricated, 

 straw-colored, or light chestnut, passing into the linear- 

 spatulate acuminate bearded bracts, which are longer than 

 the flower. (E. gnaphalodes. Ell., not of Michx.) Boggy 

 places. July-September. Scapes 2°-3° high ; leaves 4-12' 

 long, 2"-6" wide. 



E. GNAPHALODES, Michx. Lcavcs lanceolate-subulate, 

 flat, very acute, rigid, or the immersed ones thin and pel- 

 lucid; scapes few or single, slender, 9-11-furrowed; head 

 hemispherical (4"-8" wide) ; scales of the involucre few, 

 oblong or roundish, very obtuse, turning lead-color; bracts 

 shorter than the flower, spatulate, their broad and bearded 

 summit obtuse or more or less mucronate-pointed, turning 

 blackish. (E. compressum, Lam.) Swamps and shallow 

 ponds. April-June. Scapes l|°-2° high; leaves 2-6' 

 long, concave at the base. 



P^PALANTHUS, Martins. 



Flotuers monoecious. — Staminate flowers: sepals 3; 

 corolla tubular, 3-toothed ; stamens 3 ; anthers 2-celled. — 

 Pistillate flowers : scjmls and j9c/a?s 3 ; style 3-parted, 

 the divisions entire; stigmas 3; capsule 3-celled. — Habit 

 of the preceding. 



P. FLAVIDULUS, Kunth. Leavcs short (l'-2' long), subu- 

 late, smooth, or sparingly pubescent; scapes numerous, 

 filiform, 5-furrowed, and like the sheaths hairy; heads 

 hemispherical, yellowish-white; scales of the involucre ob- 



