221 
Alisma triviale Pursh, [S, M: A. plantago-aquatica vat. americanum 
Schultes & Schultes f.] (Bjérkvist, 1967, 1968), p. 58 
ECHINODORUS, burhead 
Echinodorus berteroi (Sprengel) Fassett [G: E. rostratus 
(Nutt.) Engelm.] (Fassett, 1955; Rataj, 1975), p. 60 
var. berteroi [S, M: var. lanceolatus (Engelm.) Fassett] 
(Rataj, 1975) 
E. cordifolius (L.) Griseb., p. 60 
E, tenellus (Mart.) Buchenau, p. 60 
var, parvulus (Engelm.) Fassett [G: E. parvulus Engelm.] 
(Fassett, 1955) 
SAGITTARIA, arrowhead 
Sagittaria ambigua J. G. Smith, p. 64 
S. australis (J. G. Smith) Small, see excluded taxa 
S. brevirostra Mackenzie & Bush [S: S. engelmanniana J. G. 
Smith ssp. brevirostra (Mackenzie & Bush) Bogin] 
(Beal et al., 1982), p. 
S. ealycina Engelm, [S: 5. montevidensis Cham. & Schidl. ssp. 
calycina (Engelm.) Bogin] (Beal, 1960), P- 62 
var. calycina 
S. graminea Michaux, p. 63 
ea 
S. latifolia Willd., duck potato, common arrowhead, wapato, 
P- 
var. latifolia [S: incl. f. gracilis (Pursh) Robinson, f. oa 
(Pursh) Robinson, var. obtusa (Muhlenb.) Wies- 
Bogin, 1955 
S. sietyphyila p mae _ G. Smith [S, G: 5. pane var. 
platyphylla Engelm.] (Wooten, 1973), P- Fae 
S. rigida Pursh [S: incl. f. elliptica (Engelm.) Fern. *- 
(Engelm.) Fern.] (Bogin, 1955), P- 63 
AMARYLLIDACEAE (see LILIACEAE) 
: brock 
S: Steyermark G: Great Plains Flora M: Mohlen 
