SY 
2. Ie Braunii Durien, Submersed stout plants, the leaves usually 10-35, 
straight or recurved, often divaricate, firm, tapering from the wide base, 
mostly 8-15 (or sometimes 25) cm. long, the stomata fews ligule deltoid; 
sporangia oblong, 4-7 mm, long, spotted, more or less completely covered by 
the velum; megaspores white, spinose,or |iess often |the spines\confluent into 
short ridges; microspores light brow, usually smooth, 
Known in our region only from sandy bottoms of Upper and Lower Priest | 
Lakes, 2700 ft., Epling 7737, 7830, in the latter forming large patches of 
oy aes acres in extent, in from }$-3 fect of water. 
3. I. occidentalis Hend, Submersed aquatic herbs, the leaves 9-30, dark 
green, rigid, tapering from a wide base, 5-15 (or 20) cm. long, the stomata 
wanting; ligule short-triangular; sporangia suborbicular, 5-6 mm, long, 
about 1/3 sovered by the velum; megaspores cream-colored, with low conspicuous 
crests, these simple on the apical faces, forming a network on the basal 
face; microspores spinulose. (I. lacustris var. paupercula Engeln.). 
On sandy bottoms of Priest Lake, Piper 3689, and Lake Coeur d'Alene, 
fide Pfeiffer; at the latter station in from 1/2 to 6 feet of water, 
