296 DICOTYLEDONOUS. 



1 A Hybridus. Stem erect. Leaves ovate-lanceolatc. Flowers in com- 

 pound racemes, crowded, pentandrous. Perianth consisting of subulate 

 leaves. 



<S) June— Sept. About cultivated grounds. 2-3 ft. 



Order CXXVI. CHENOPODE^. 



Perianth deeply divided, persistent, sometimes tubular at 

 the base. Stamens 1 or 5, inserted into the base of the peri- 

 anth, opposite its segments. Ovary single, superior, some- 

 times adhering to the calyx. Ovule 1. Styles dWi^ed, rare- 

 ly simple. Fruit niembraneous, sometimes baccate. Seed 

 erect. Ejnbryo curved. Herbaceous plants. Flowers smaW^ 

 sometimes polygamous. 



Genus I CHENOPODIUM. 



Flowers perfect. Perianth 5-cleft, 5.angled, enclosing the 

 fruit. Stamens 5. Styles 2. 



1 B MuRALE. Stem decumbent, branching. Leaves ovate, lanceolate, 

 toothed, on long petioles. Flowers in leafy, corymbose racemes. 



Aug. — Sept. Cultivated lands. 12-18 m. 



2 C Album. Stem branching. Leaves ovate, rhomboid erose, entire at 

 the base, the upper ones entire, when old becoming covered with a mealy 

 substance. Flowers in branched racemes, somewhatleafy. Seed smooth. 



^ July — Aug. Waste grounds. 3-6 ft. 



3 C BoTRYS. Stem much branched, somewhat viscid. Leaves oblongi 

 sinuately pinnatifid, with tho segments toothed. Flowers in short, axillary 

 racemes at the extremity .of the branches. Jerusalem Oak. 



@ July — Aug. Common. 1-3 ft. 



4 C Ambrosioid:es. Stem much branched, son.evvhat pubescent. Leaves 

 lanceolate, remotely toothed, on short petioles. Flowers in erect spikes, leafy. 



Aug. — Sept. Road sides. 1-2 ft. 



5 C Anthelminticum. S^em erect, branching, furrowed, ieaues oblong- 

 lanceolate, sinuately toothed, rugose, dotted on the under surface. Floicersm 

 axillary, terminal and leafless spikes. Worm seed. 



Q\. June— Aug. Fields. 4-6 ft. 



Genus II SALSOLA. 



Perianth 5-leaved. Stamens 5. Styles 2, or none. Stig- 

 mas acute. Capsule 1-seeded. Seed spiral. 



1 S Caroliniana. Stem erect, striate, glabrous, branching. Leaves sub- 

 ulate, fleshy, rigid. Flowers usually solitary, sessile, with 2 bracts at the base. 

 Calyx persistent, red. * 



<¥> June — Sept. In drifting lands- 



2 S Linearis. Siem ere-jt, furrowed, glabrous, branching. Leaves YmediX, 

 alternate. Flowers sessile, axillary, crowded. Calyx fleshy. Style none. 

 Stigmas 2. Fruit clothed by the calyx, spiral. 



Sept. — Oct. On the sea coast. 



rr'v^<^ Genus III ATRIPLEX. 



Flowers polygamous, or monoecious. Perfect flowers peri- 



