
86 METROPOLITAN PARK FLORA. 
LEMNACEAZE.  Ducxweep Fasmy. 
SPIRODELA, Schleid. 
S. polyrrhiza, Schleid. 
Ponds and pools, floating. MM, frequent; border of Doleful 
Pond; shore of S. Reservoir; bog, N. side of Bear Hill. 
LEMNA, L. Duckwerp. 
L. Valdiviana, Philippi. 
Ponds and nooks in slow streams. #*, this most interest- 
ing species grows in Monatiquot Stream, near Randolph Ave. 
L. minor, L. 
Ponds and pools, floating. M, common; bog, N. side of 
Bear Hill, ete. 
ALISMACEZE.  Warver-prantan Famiry. 
ALISMA, L. WatTER-PLANTAIN. 
A. Plantago, L. 
Wet boggy places in soft mud. B* and S, common: —M, 
ditch, N. E. of Bear Hill. 
SAGITTARIA, L.; ArRRowHEaD. 
S. latifolia, Willd.t S. variabdilis, Gray, Man. ed. 6, 554, in 
part. 
Wet places. B*, Cedar Swamp. 
S. latifolia, Willd., form ¢c.§ 8S. variabilis, Gray, Man. ed. 
6, 554, in part. 
Wet places. B*, Balster Brook; Monatiquot Stream. 
S. graminea, Michx. 
Shallow water. M*, common round Spot Pond. 
+S. variabilis, Engelm. is frequent in ditches and wet meadows in 
M, but it has not been studied in the light of J. G. Smith’s new 
revision. 
t See 6th Ann. Rep. Missouri Bot. Garden, 34, t. 3. 
§ See 6th Ann. Rep. Missouri Bot. Garden, 38, t. 5. 

