486 ORDER C. CHENOPODIACE^. 



hering to the calyx. Ovule 1. Styles divided, rarely simple. 

 Fruit membranaceous, sometimes baccate. Seed erect. Em- 

 bryo curved. Herbaceous plants. Flowers small, sometimes 

 polygamous. 



Genus I— SALICOR'NIA. L. 1—1. 

 (From sal, salt, and cormi, horn.) 



Perianth ventricose, fleshy, closed. Stamens 1 — 2. Style 

 1, bifid. Fruit inclosed in the perianth. Seed 1. 



1. S, herba'cea, (L.) Stem erect, much branched, jointed, succulent; 

 joints notched, conapressed. Flowers by threes, in cylindrical spikes, 

 slightly tapering at the extremity. Perianth thick, truncate, split on 

 one side. — f^. Aug. — Sept. Salt marshes. 10 — 12 inches. 



Sajnphire. 



2. S. ambig'ua, (Mich.) Ste7n procumbent, branching, assurgent ; 

 joints crescent-shaped, small. Flowers in opposite and alternate spikes. 

 Calyx truncate. — 2f . July — Sept. Salt marshes. Very common. 



Anthrocjiemum ambiyuum, Moq. 



The Beet, Seta vulgaris, with all its varieties, belongs to this order; also the Spi- 

 nach, Spinacia oleracea. 



Genus IL— AT'RIPLEX. L. 5—2. 

 (From ater, black.) 



Flowers polygamous, or monoecious. Perfect flowers, peri- 

 anth 5-parted. Stamens 5. Style 2-parted. Fruit depressed, 

 1-seeded, inclosed by the calyx. Pistillate florets, perianth 2 

 parted. Stamens none. Style 2-parted. 



1. A. pat'ula, (L.) Stem prostrate, spreading, somewhat angled, gla- 

 brous. Leaves triangular, hastate, acuminate, entire, or slightly tooth- 

 ed, glabrous. Floicers clustered, in axillary and terminal spikes. Ca- 

 lyx persistent, submuricate on the sides. — 0. June — Sept. In low 

 country. 1 — 2 feet. 



2. A. angustifo'lia, (L.) Stem divaricate, angled, glabrous. Lower 

 leaves hastate, slightly toothed, the upper ones lanceolate, entire, at- 

 tenuate at the base. Flowers in axillary and terminal compact clusters. 

 Calyx hastate. — 0. June — July. On the sea-coast. 



3. A. lacinia'ta, (L.) Stem dififuse, terete, pubescent toward the sum- 

 mit. Leaves triangular, deeply toothed, pubescent beneath ; lower ones 

 opposite. Flowers in axillary clusters. Stamens 4. Calyx rhomboidal, 

 acute, entire. — %. June — Aug. Salt marshes. 



4. A. arexa'eia, (Nutt.) Stem geniculate, glabrous, much branched. 

 Leaves oblong-ovate, mucronate, alternate, covered with white scales 

 beneath, entire. Perianth muricate, dentate. Flowers monoecious, 

 sterile ones at the extremity of the branches, fertile ones in axillary 

 clusters. — 0. July — Nov. On the sea-coast. 10 — 12 inches, 



Obione arenarieu 



