JUNCACEAE , 57 



1. H. lenlformis E. & P. Mud Plantain. Leaves cordate or reni- 

 form: flowers 4" long. — In ponds. Abundant north of Sheffield ; also near 

 Courtney, Lake City, Buckner and Atherton. July-September. 



2. H. limosa (Sw.) Willd. Smallbe MUD PLANTAiif. Leaves ovate 

 or oval : flowers h" long. — Abundant in a pond north of Sheffield with 

 the last; also near Atherton. July-September. 



3. H. dubia (Jacq. ) MacM. Water Star Grass. Leaves linear and 

 grass-like : spathe l-flowered. — Abundant In HifEner's Lake near Ather- 

 ton. July-September. 



Family 19. JUNCACEAE Vent. 

 Rush-like herbs with regular, greenish flowers. Perianth 6-parted. 

 Stamens 3 or 6. Style solitary. Stigmas 3. Ovary superior, 3-celled, 

 or 1-celled with 3 parietal placentae. Capsule many-seeded. 



1. JUNCUS L. Rush. 

 Perennial or annual herbs with flowers very variously arranged. 



1. J. efiusus L. Densely tufted, 2°-4° high: stems leafless: flowers 

 1 J" long, in a diffuse panicle : sepals about the length of the retuse point- 

 less capsule. — Along the outlet to the railroad pond at Grain Valley. 

 Probably adventized. June-August. 



2. J. Balticus Willd. 8''-3° high : stems leafless : flowers 2" long in 

 a panicle, l'-2J' long : outer sepals acute, the inner obtualsh, about the 

 length of the strongly muoronate capsule. — Of rare occurrence on sand- 

 bars along the Missouri River. June. 



3. J. bufonius L. 3'-9' high, spreading : leaves narrow : panicle 

 dichotomous, the flowers distant : sepals Z'^-SY^ long, acuminate, the 

 outer much exceeding the three inner and the oblong obtuse capsule. 

 — Sand-bars along the Missouri River. Rare. May-November. 



4. J. tenuis Willd. l''-40' high, erect, wiry: leaves narrow : leaf- 

 aarioles scarious, much prolonged beyond point of insertion : panicle 1- 



