PONTEDERIACEAE 13 
2. Smilax glauca Walt. 
Republican River near Franklin. 
3. Smilax hispida Muhl. Green Brier. 
Common in woods all over the state. Crete; Grand Island; Lincoln; 
Omaha; St, James; Tecumseh; Weeping Water. 
2. PONTEDERIACEAE, 
Heteranthera. 243. 
Leaves rounded, petioled. 
Spathe several flowered. 1. H. reniformis. 
Spathe 1 flowered. 2. H. limosa. 
Leaves linear, sessile. 3. H. dubia. 
1. Heteranthera reniformis R. & P. 
Nebraska, according to Britton’s Manual. 
2. Heteranthera limosa (Sw.) Willd. 
Common in mud or shallow water, Fairmont; Lincoln; Minden; 
Plainview; Sheridan County. 
3. Heteranthera dubia (Jacq.) Mac. M. 
Submerged aquatic of still water. Elm Creek; Glen Rock; Kearney; 
Neligh. 
3. COMMELINACEAE, 
Petals unequal, perfect stamens 3 or 2. 1. Commelina. 
Petals equal, perfect stamens 6 or 5. 2. Tradescantia. 
1. Commelina. 239, 
Sheaths glabrous or nearly so. 1. C. crispa. 
Sheaths hirsute. 2. C, virginica. 
1. Commelina crispa Wooton. 
Nebraska, according to Britton’s Manual. 
2. Commelina virginica L. 
In the sand-hill regions. Knox County; Long Pine; Sheridan; Thed- 
ford. 
2. Tradescantia. 240, 
nha esca ney 
Flowers 1 to 1.5 cm. broad, 1. T. scopulorum. 
Flowers 2 to 3 cm. broad. 
Bracts lanceolate, broader than the leaves. 2. T. bracteata. 
Bracts linear, narrower than the leaves. 3. T. occidentalis. 
1. Tradescantia scopulorum Rose. 
Thedford. 
2. Tradescantia bracteata Small, 
Ainsworth; Callaway; Ewing; Inman; Lincoln; Red Cloud. 
3. Tradescantia occidentalis Britton, 
Common all over the state. Anselmo; Central City; Box Butte County; 
Kearney; Lincoln; Newcastle; Pine Ridge; Thedford. 
4. JUNCACEAE., 
Juncus. 244, 
Inflorescence apparently lateral. 
Perianth green or straw-colored, seeds 0.5 mm. long. 1. J. filiformis. 
