Arrow-grass Family 15 



1. T. xnaritima L. Perennial plants with a long rootstock and 

 a thick caudex, which is usually covered with the sheaths of old 

 leaves; spathes stout, 2-4 dm. high, commonly solitary; leaves 

 much shorter than the scapes, tapering to a long acute or obtuse 

 point, 4-6 mm. wide; racemes 4-10 cm. long; pedicels decurrent, 

 2-5 mm. long; perianth segments 6, the 3 inner smaller, ovate, 

 greenish-white; stamens 6; ovaries 6, united, each 1-celled, 

 1-ovuled ; carpels 3-angled, with the dorsal angles making a 

 broad groove on the back, 5-6 mm. long; stigmas persistent and 

 recurved. 



Salt marshes along the coast. 



2. LILAEA H. B. K. 



Subaquatic stemless annuals, with simple slender 

 scapes and radical leaves, which are slightly dilated at 

 base. Flowers polygamous, the one sort solitary, pistil- 

 late and disposed among the leaves at the base, with 

 long thread-like styles ; the other monoecious, in dense 

 spikes at the apex of slender scapes. Staminate flowers 

 imbricated in narrow oblong spikes ; anthers nearly ses- 

 sile in the axis of a white linear petaloid bract. Pistil- 

 late flowers imbricated in conical crowded spikes, bract- 

 less, consisting of a 1-celled, 1-ovuled ovary ; stigma 

 capitate. Fruit ovoid, costate, indehiscent. 



1. L. subulata H. B. K. Leaves cylindric, numerous, 12-20 

 cm. long, 3-5 mm. in diameter, tapering to a point at the apex; 

 scapes 8-16 cm. high, shorter than the leaves, terete; styles of 

 the solitary flowers often 12 cm. long and tipped with a capi- 

 tate stigma; fruit 6 mm. long. 



Occasional about San Bernardino, Parish. Frequent about San Diego and 

 in the Cuyamaca Mountains. 



