14 Juncaginaceae 



2, capillary. Fruit beaked by the short persistent style, 

 cordate-sagittate. 



1. P. Torreyi Wats. Stems slender, flat, 0.5 m. long or more, 

 bearing the spathes in clusters along the upper part ; leaves 4-8 

 cm. long, 1-2 mm. wide, thick and smooth ; sheaths long, their 

 margins membranous; spathes 3-5 in a cluster, 2-4 cm. long, 

 slightly curved; appendages of the pistillate spadix elliptic, of 

 the staminate oblong-ovate; fruit heart-shaped, 5 mm. long. 



Growing on rocks which are uncovered at low tide. San Pedro; La Jolla. 



Family 4. JUNCAGINACEAE. ARROW-GRASS 

 FAMILY. 



Marsh plants with rush-like or cylindric leaves. 

 Flowers spicate, racemose or solitary, perfect or monoe- 

 cious. Perianth none, 1-bracted or 4-6-parted. Stamens 

 1 or 3-6. Ovaries 1 or 3-6, when more than 1 they are 

 more or less united while immature. Seeds anatropous ; 

 embryo straight. 



Flowers perfect; perianth segments 3-6. 1. TRIGLOCHIN. 



Flowers polygamous ; perianth wanting. 2. LILAEA. 



1. TRIGLOCHIN L. ARROW-GRASS. 



Marsh plants with radical semiterete fleshy leaves, 

 which have membranous sheaths at the base. Flowers 

 small perfect in spikes or racemes, on long smooth naked 

 scapes. Perianth segments 3-6, concave, the 3 inner in- 

 serted higher up than the others when present. Sta- 

 mens 3-6 ; anthers 2-celled extrorse sessile or nearly 

 so, inserted at the base of the segments and deciduous 

 with them. Ovaries 6, united or rarely free, 1-celled ; 

 style short ; stigmas as many as ovaries, plumose. 

 Fruit of 3-6 oblong or ovoid carpels, when ripe separat- 

 ing from the base upward from a persistent central axis, 

 dehiscing by a ventral suture. 



