ZYGOPHYLLACEAE. 2 1 7 



1. CALLITRICHE L. 

 Characters of the family, this being the only genus. 



1. C. marginata Torr. Usually rooting in the mud, small, with 

 Hnear-oblanceolate leaves, 4-6 mm. long or less, sometimes floating 

 with slender stems and the upper leaves spatulate; styles elongated, 

 reflexed, deciduous; fruit on slender spreading pedicels, 2-8 mm. 

 long, deeply emarginate above and below, the margins of the thick 

 carpels widely divergent, narrowly winged. 



Soldiers Home, Hasse. Near San Diego in shallow pools on the 

 mesa. 



Family 56. LIMNANTHACEAE. 



False Mermaid Family. 



Annual herbs with alternate petloled exstlpulate pin- 

 nately divided leaves and perfect regular axillary long- 

 peduncled flowers. Sepals 2-5, valvate, persistent. 

 Petals the same number as the sepals, alternating with as 

 many small glands; the nearly perigynous stamens twice 

 as many, distinct. Carpels as many as sepals and oppo- 

 site them, 1-ovuled, nearly distinct; the single style 

 slender, arising from the center as in the Geraniaceae, 

 cleft above into as many stigmas as there are carpels. 

 Fruit very deeply 2-5-lobed, the carpels indehiscent, 

 rough or tubercled. 



1. LIMNANTHES R. Br. 



Low diffuse annuals, growing near water, with showy 

 white or rose-colored flowers solitary on axillary pe- 

 duncles. Carpels subglobose, at first fleshy, becoming 

 hard and rugose. 



L L. douglasii R. Br. Glabrous throughout, diffusely branched 

 from the base, the weak and succulent stems 15-45 cm. long; leaf- 

 lets incisely lobed or parted with linear acute lobes; peduncles 

 5-10 cm. long; sepals lanceolate, 6-8 mm. long; petals oblong or 

 obovate, emarginate or truncate, 12-16 mm. long, yellow; style very 

 slender, 6-8 mm. long. 



Growing in moist places. Reported from Los Angeles and San 

 Bernardino. 



Family 57. ZYGOPHYLLACEAE. Caltrop Family. 

 Herbs or woody plants, with mostly opposite, stipu- 

 late, pinnate leaves with entire leaflets. Flowers perfect, 



