( 822 ) 
protected by foliaceous spathes. Upper part 
of spadix ¢ ; perigonium 0; anthers basifixed, 
irregularly mixed with scales. Lower portion 
of spadix 2 ; ovaries surrounded at their bases 
by o-bristles, sometimes by 3 scales; stigma 
1, lateral. Fruit a utricle;endosperm copious. 
Leaves linear, straight-nerved. Aquatic.—2f. 
1, Sparganium Tourn. Bur-Reep. | - 
Flowers in crowded glomerulate heads, con- 
stituting a simple or a branched spadix. Fila- 
ments slender. Ovaries sessile, surrounded by 
some linear scales. 
1. §. EURYcARPUM Engelm.—West Oakland 
(extinct); rediscovered at Niles. Summer. 
2. Typha Tourn. QAT-TAIL, Fac. 
Flowers in a club-shaped, continuous spadix. 
é: filaments connate, very short. 9: ovaries 
stipitate, surrounded by © bristles. 
1. T. watrron1a L.—Common, Summer. 
Series 3. HELOBIA. Aquatics: Type 
generally ternate. Seed nearly without endos-.. 
perm. Embryo with very pronounced radicle. 
Orpen 1. POLYCARPICA. Ovaries 3-0. 
Endosperm entirely wanting. 
Family 1. ALISMACEZ. 
Calyx 3-sepalous. Corolla 3-petalous. Stam- 
ens 6-0. Ovaries 3-0, with terminal styles 
