2. Se Simplex Huds. ——> Stems 20-60 cm. tall, the leaves 5-10 ma. broad 
or more,at least the lower ones keeled and V-shaped in cross-section, flat, 
firm, often sustaining their own weight, usually not limp @iiewebeeste 
aeemigg., 20-60 cm. long; pistillate heads 1-6, borne in the axils of the 
uppermost leaves, the lowermost on peduncles 5-4 cm. long, 15-20 mme in 
diameter at maturity; achsnes shining, 3-4 mae long, uarrowed at the base to 
a stalk 1-2 ma. long, attenuate at the apex to a slender beak about as long 
as_ the achene proper. 
Upper Priest Lakes; Lake Coeur d'Alene; Santas Granite Staes Priest Re3 
Rethdrune . mt 
Se Se ansustifolium liichx. —__-»5tems slender, 50-90 cme long, the leaves 
Slender, limp and floating, not keeled, 3-5 mm. wide; pistillate heads 
2-5, borne in the axils of the uppermost leaves, the lowermost on peduncles 
5-4 cme long, 15-20 um. in diameter at maturity; achenes shining, 3 mae long, 
narrowed below to a short stalk about 1 mm. lons, rather abruptly attenuate 
into a slender beak 1.5-2 mn. long. 
Upper Priest Lake; Lake Coeur d'Alene; Lovilleg °t. Joe R,. 
4. S. minimum Fries. ———y Stems slender, 10-50 cm. tall, the leaves thin, 
20-50 cme longs, 5-4 mn. broad, flat; pistillate haads usually <, 5-12 m. in 
diameter at maturity, the lower borne on peduncles 1-2 cm. long; acnenes dull, 
scarcely 5 mm. lons, nearly sessile, abruptly narrowed to a short beak 
05-125 mm. longs. 
Priest Lake, Eiper 5729. 
smite 
