124 Chenopodiaceae 



1. APHANISMA Nutt. 



Slender glabrous annuals, with alternate sessile entire 

 Leaves, and axillary mostly solitary perfect bractless 

 flowers. Calyx 3-cleft, with concave segments un- 

 changed in fruit. Stamen 1: filament short. Ovary 

 depressed : style shortly 2-3-cleft ; pericarp somewhat 

 5-angled, rather thick and indurate. Seed horizontal, 

 with very thin crustaceous testa. Embryo annular sur- 

 rounding the copious endosperm. 



1. A. blitoides Nutt. Steins ascending, branched, 3-7.5 dm. 

 high ; leaves thin, oblanceolate to ovate-oblong, the upper ones 

 ovate, acute, 6-15 nun. long; calyx minute, its lobes ovate, 

 obtuse, closely appressed to the base of the fruit; fruit 1 mm. 

 broad; seed shining, punctulate-rugose. 

 San Pedro, Davidson; Catalina Island. 



2. CHENOPODIUM L. Goosefoot. 



Annual or rarely perennial herbs, mostly introduced 

 weeds. Leaves often white-mealy, sometimes glandular, 

 alternate, petioled. Flowers perfect, bractless, clustered 

 in axillary or terminal often panicled spikes. Calyx 

 herbaceous, 3-4-parted or mostly 5-parted ; the lobes 

 usually connate or crested, more or less closely covering 

 the fruit. Pericarp membranous, closely investing the 

 Lenticular or subglobose, horizontal or vertical ^vfl. 

 Embryo annular or curved around the copious endo- 

 sperm. 



* Annuals; ours introduced. 



•*- Leaves white-mealy or (jlabrous. 



1. C. album L. Stems erect, 0.5-2 m. high, branches ascend- 

 ing; leaves rhombic-ovate or the upper lanceolate, narrowed at 

 the base, acute or sometimes obtuse at the apex, white-mealy 

 beneath, dentate or sinuate or the upper entire, 2-6 cm. Long; 



