500 cm. CHENOPODIACE.E. 



Oedeh cm. CHENOPODIACE^. 



Herbs or shrubs. Leaves alternate (rarely opposite) ; stipules 0. 

 Flowers small, usually green, hermaphrodite or 1-sexual ; bracts 1 or ; 

 bracteoles or 2, Perianth simple, sepaline ; segments 3-5, free or 

 connate, imbricate in bud (in female flowers sometimes 0). Stamens 

 usually 5, opposite the perianth-segments, hypogynous or perigynous ; 

 filaments usually free, sometimes with intervening staminodes ; anthers 

 2-celled, Ovary ovoid, globose or depressed, 1-celled ; ovule solitary, 

 basal or lateral, campylotropous ; style terminal, short or long, stigma 

 capitate, 2-3-lobed ; or styles 2-3 ; or stigmas 2-5 free or slightly united, 

 sessile. Fruit usually a utricle enclosed in the often enlarged fleshy 

 perianth (when perianth is present). Seed erect, inverse or horizontal ; 

 testa crustaceous, coriaceous or membranous ; albumen fleshy or floury 

 or ; embryo curved, annular, or spiral. — Disteib. Widely dispersed 

 throughout the world ; genera 80 ; species about 520. 



Stems not twining ; bracteoles free from the periantli ; 

 anthers erect or incurved in bud. 



Embryo annular or horse.shoe-shaped. 

 Stems leafy, not jointed. 



Fruiting perianth not winged ; albumen copious. 

 Flowers all similar, hermaphrodite (some- 

 times polygamous in 6'. ui/ihrosioides); 



leaves flat 1. Cuenopodium. 



Flowers dimorphic, the males ebracteolate 

 with 3-5 sepals, the females 2-bracteolate 



without sepals 2. Atripi.kx. 



Fruiting perianth with transverse wings; albu- 

 men scanty 3. KociiiA. 



Stems jointed, fleshy ; leaves 0. 



Flowers in the scales of cone-like spikes ; embryo 



horseshoe-shaped; albumen fleshy 4. Arthrocnemum. 



Flowers sunk in cavities in successive joints ; 



embryo conduplicate ; albumen 5. Salicoknia. 



Embryo spiral; albumen 0. 



Anthers not appendiculate. 



Sepals not winged 6. Su.i^.da. 



Sepals transversely winged. 



Stem jointed 7. Haloxylov. 



Stem not jointed 8. Salsola. 



Anthers appendicuiate ; sepals not winged 9. Halociiaieis. 



Stems twining to the right: bracteoles 2, broad, adnale to the 



face of the perianth ; anthers versatile 10. Basella. 



1. CHENOPODIUM, Linn. 



Annual or perennial erect or prostrate herbs. Leaves alternate, 

 entire, lobed or toothed. Flowers nnuute, hermaphrodite (rarely poly- 

 gamous), clustered, forming axillary and terminal ='mple or branched 

 spikes or racemes ; bracts and bracteoles 0. PerianLJi usually 5 (rarely 

 fe\ver)-lobed ; segments concave, incurved, not altered in fruit. Stamens 

 5 or fewer, hypogynous or almost perigynous ; anthers 2-celled. Disk 

 or annular. Ovary depressed-globose (rarely ovoid); ovule solitary; 

 style usually ; stigmas 2-5. Fruit a membranous utricle, enclosed 

 in the perianth. Seed horizontal (rarely erect) ; testa crustaceous ; 



