RESTIACE^E. 369 



Flowers blue, smaller than in the preceding species, of which it 

 may be only a variety. I have fine specimens collected by Dr, 

 S. B. Mead in Westchester co. N. Y. 



2. HETERANTHERA. JR. # P. 



Flowers in a spathe. Perianth with a long and slender 

 tube ; border 6-prted, equal. Stamens 3. Anthers of 2 

 forms. Capsule 3-celled, many-seeded, opening at the an- 

 gles ; dissepiment contrary. Tridndria. Monogynia. 



H. reniformis R. 4* P- ' leaves orbicular-reniform ; spathe oblong r 

 acuminate, 3 5-flowered. H. acuta Pursh.Leptanthus reniformis 

 Mich. 



HAB. Overflowed banks. N. Y. to Vir. July, Aug. 21. 

 Stem partly floating. Leaves petioled. Flowers white. 



3. SCHOLLERA. Schrel. 



Spathe 1-flowered. Perianth with a very long tube; limb 

 deeply 6-parted. Anthers of 2 forms. Capsule 1-celled. 



Triandria. Monogynia. 



S. gi'aminea Vahl. Leptanihus gramineus Mich. Heteranthera grami- 

 nea Pursh. 



HAB. In flowing streams. N. S. July, Aug. 1. Stem slend- 

 er, dichotomous. Leaves sessile, narrow-linear. Floicers small, 

 yellow, solitary. Stamens 4, 1 abortive. 



ORDER CXXVI. RESTIACE^. Brown. Lind. 



Perianth 2 6-parted, sometimes wanting. Stamens defi- 

 nite, 1 6; when half as many as the segments of the peri- 

 anth, they are opposite the inner divisions ; anthers mostly 1- 

 celled. Ovary 1 or more celled. Fruit capsular or nuca- 

 mentous. Seeds pendulous ; embryo lenticular, on the outside 

 of a mealy albumen, at the extremity remote from the hilum. 



Herbs or undershrubs. Leaves simple, narrow, or none. 



1. ERIOCAULON. 'Linn. 



Flowers monoecious, collected into a compact scaly head. 

 STERILE FL. in the disk. Perianth 4-cleft ; the 2 inner seg- 

 ments united nearly to their summit. Stamens 46. FER- 

 TILE FL. in the margin. Perianth deeply 4-parted. Style 

 1. Stigmas 23. Capsule 2 3-lobed, 2 3-celled ; cells 

 1-seeded. . Monoecia. Tetrandria. 



1. E. pellucidvm Mich. : scape very slender, about 7-furrowed ; leaves 



