I 



MONOECIA TRIANDMA. 



•X 



521 



simple. Stigma acute. Seed dark brown on a pedicel surrounded at base 

 by short hairs or bristles that seem in this genus to perform the functions of 

 a perianth. • ! 



stagnant 



SPARGANIUM. Gen. Pl. 1402. 



MascuH — Amentum 



3Me 



Florets 



subrotimdum. Calyx I ment 



nearly 



vel simplex. 



Stigma bifidum, 



exsucca, 1 -sperm a 



Drupa 



rolla 0. 



3-phyllus. Corolla 0. | Calyx 3-leaved. 



Foeminei — Anient- 



F 



um subrotimdum. Ca- 

 lyx 3-pliyllus. Corol- 

 la 0. 



round 

 Co- 



4 



Female — A ment 



nearly round. 



Caly:je 



3-leaved. Corolla 0. 

 Stisma 2-cIeft> or sim 



pie. 



seeded. 



Drupe dry, one 



ZL- 



1. Americanum? 



Nutt. 



S. foliis inferioribus I Lower leaves as long 

 caulem subaequantibus, I as the stem, concave at 



culmo I base; stem branching; 



stigma simple, tapering 



basi 



concavis; 



ramoso; stjgmate sira- 



> 



plici, superne attenua- to the summit, oblique 

 to, obliquo, stylum ae- | as long as the style, 

 quante. E. 



1 



r 



Nutt. 2. p. 203. 



S. Simplex, Pursh, 1. p. 24. Sp. pi. 4. p. 199. 



Root perennial, fibrous. Stem eigliteen to twenty-four inches high, te- 

 rete, flexuous, glabrous, bearing generally two to three branches. Leaves' 

 about as long as the stem, strap-shaped, obtuse, glabrous, thick, concave at 

 the base. Heads of flowers globular, sessile. Sterile heads six to nine, fer* 

 tile two to three, on the branches not so numerous. Of the sterile floret, 

 c^lyx three-leaved, the leaves obovate, obtuse; filaments twice as long as 

 the calyx; anthers oblong, 2-celled. Of the fertile floret, calyx three-leaved, 

 leaves obovate, embracing the germ and base of the styl^. Stifle ratlier 

 longer than the calyx. Stigma tapering, rather pbtu.<e, and about as long 

 ^ the style. 





VOL. II- 



IT 3 



