278 
TYPHACEAE, cattail family 
TYPHA, cattail 
Typha angustifolia L., narrow-leaved cattail, p. 48 
T. x glauca Godron, see named hybrids 
T. latifolia L., common cattail, p. 46 
f. ambigua (Sonder) Kronfeld 
f. latifolia 
XYRIDACEAE, yellow-eyed grass family 
XYRIS, yellow-eyed grass 
Xyris torta Smith, p. 392 
ZANNICHELLIACEAE, horned pondweed family 
[S: NAJADA ACEAE] 
ZANNICHELLIA, horned pondweed 
Zannichellia palustris L5p 
var. major (Boenn.) w. B ef Koch 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
