ORDER C. CHENOPODIACE^E. 485 



3. A. spino'sus, (L.) Stem erect, glabrous, much branched. Leaves 

 lanceolate, mucronate, entire, with 2 spines at the base of the petiole. 

 Flowers in compound axillary and terminal racemes. Stamens 5. Styles 

 3. — 0. June — Oct. Cultivated grounds. 2 — 3 feet. 



4. A. liv'idus, (L.) Stem erect, glabrous, usually purple. Leaves 

 alternate, ovate, or elliptic, slightly undulate, veins prominent. Flowers 

 clustered, axillary and terminal, with the sterile and fertile intermin- 

 gled. Stamens 3. Styles 2 or 3. — %. June — Sept. Cultivated lands. 

 Common. 2 — 3 feet. Euxolus lividus, Moq. 



5. A. pumi'lus, (Ell.) Stem procumbent, fleshy, glabrous, usually pur- 

 ple. Leaves ovate, fleshy, obtuse, emarginate. Flowers in sessile, ax- 

 illary clusters. Perianth 5 leaved. Stamens 5. Styles 3. — 0. Aug. 

 — Oct. On the sea-coast. 1 — 2 feet. 



6. A. sanguineus, (L.) Stem naked. Leaves red, oblong, acute. 

 Flowers in terminal, erect racemes. Branches expanding, glabrous. 

 Stamens 5. — 0. Aug. — Oct. On the sea-coast. 1 — 2 feet. 



Genus IV.— OPLOTHE'CA. 15—5. 

 (From oplose, armour, and theca, a sheath, from the appearance of the capsules.) 



Perianth double, the exterior 2-leaved, truncate ; the interior 

 5-cleft, toraentose. Stamens 5, rnonadelphous. Capsule 1- 

 seeded, inclosed in the calyx. 



1. 0. Florida'na, (Nutt.) Stem erect, branching at the summit, pu- 

 bescent, with swollen joints. Leaves opposite, sessile, linear-lanceolate, 

 woolly beneath. Flowers in paniculate spikes ; the inner perianth to- 

 mentose. — 2£. June — Sept. Middle and Western Georgia. 



Frozlichia Floridana, Moq. 



Genus V.— ACNl'DA. Mitch. 20—5. 

 (From the Greek a, privative, and knide, the nettle ; like it, but does not sting.) 



Flowers dioecious. Sterile florets, perianth 5-parted. . Sta- 

 mens 5. Fertile florets, perianth 3-parted. Stigmas 3 — 5, ses- 

 sile. Capsule 1 -seeded. 



1. A. uusocar'pa, (Mich.) Stem fistulous, erect, thick, angular. 

 Leaves alternate, pctiolate, entire, ovate-lanceolate, acuminate. Flow- 

 ers in dense panicles, axillary and terminal. Fruit angled, tubercled. 

 — Salt marshes. Water-hemp. 



2. A. cannabi'na, (L.) Stem erect, glabrous, slightly angled. Leaves 

 alternate, ribbed, ovate-lanceolate, usually colored, 2 — 5 inches long. 

 Flowers in large axillary and terminal panicles, the sterile plant smaller 

 than the fertile. Stigjnas nearly plumose. Seed ovate, compressed, 

 glabrous. — 0. Oct. — Nov. Marshes. 4 — 8 feet. Water-heinp. 



Order C— CHENOPODIA'CE^E. (Goosefoot Family.) 



Perianth deeply divided, persistent, sometimes tubular at the 

 base. Stamens 1 or 5, inserted into the base of the perianth, 

 opposite its segments. Ovary single, superior, sometimes ad- 



