220 
CLASS LILIOPSIDA, monocots 
AGAVACEAE, agave family, century plant family 
[S: AMARYLLIDACEAE; M: LILIACEAE] 
AGAVE (see MANFREDA) 
MANFREDA, American aloe 
[S: AGAVE] (Gentry, 1972; Verhoek, 1978) 
Manfreda virginica (L.) Rose, false aloe, rattlesnake master [S: 
Agave virginica L.] (Gentry, 1972), p. 457 
var. tigrina (Engelm.) Rose [S: Agave virginica f. tigrina 
(Engelm.) E. J. Palmer & Steyerm.] (this should 
continue to be treated as a forma, but the proper 
combination under Manfreda virginica does not 
exist yet) 
var. virginica 
YUCCA, soapweed, Spanish bayonet 
Yucca glauca Nutt., soapweed, p. 439 
var. glauca 
var. mollis Engelm. 
+Y. smalliana Fern. Spanish bayonet, Adam’s needle [M: Y. 
flaccida Haw.] (Fernald, 1944), p. 439 
ALISMATACEAE, water plantain family 
ALISMA, water plantain 
Alisma plantago-aquatica L. [S: A. plantago-aquatica var. 
plantago-aquatica}, see excluded taxa 
A. subcordatum Raf. [S, M: A, plantago-aquatica var. 
A eels (Pursh) Torrey] (Bj6rkvist, 1967, 1968), 
p. 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
