239 
SPIRODELA, big duckweed 
Spirodela polyrhiza (L.) Schleiden, duckmeat, greater 
duckweed, big duckweed, p. 388 
+S. punctata (G. Meyer) C. Thompson [S: S. oligorhiza (Kurz) 
Hegelm.] (Landolt, 1986), p. 388 
WOLFFIA, watermeal 
Wolffia borealis (Engelm. ex Hegelm.) Landolt [S, M: W. punctata 
riseb.; although W. punctata is a nomenclatural 
synonym of W. brasiliensis, it has been widely 
misapplied] (Landolt, 1986), p. 390 
W. brasiliensis Wedd. [S: W. papulifera Thompson} (Landolt, 
1986), p. 390 
W. columbiana Karsten, p. 390 
WOLFFIELLA 
Wolffiella gladiata (Hegelm.) Hegelm. [S: W. floridana (J. D. 
Smith) Thompson] (Landolt, 1986), p- 390 
LILIACEAE, lily family 
[S: incl. AMAR ID ; 
see also AGAVACEAE, SMILACACEAE] 
AGAVE (see MANFREDA-AGAVACEAE) 
ALLIUM, onion, garlic, leek 
*Allium burdickii (Hanes) A. G. Jones, wild leek, ramp (Jones, 
1979; Turner, 1984) 
z : brock 
S: Steyermark G: Great Plains Flora M: Mohlenbr 
