CHENOPODE^E. 297 



mens 5. Style 2-parted. Fruit depressed, covered by the 

 calyx. FEMALE FL. Perianth 2-parted. Stamens none. 



Pentandria. Digynia. 



1. A. halimus Linn. : stem frutescent ; leaves alternate or opposite, 

 oblong-subrhomboid, entire, decurrent into the petiole. 



HAB. New- Jersey. Muhl. 1?. 



2. A. ladniata Pursh : stem herbaceous, diffuse, pubescent towards 

 the summit ; leaves triangular, deeply toothed, white pubescent be- 

 neath ; lower ones opposite : perfect flowers tetandrous ; perianth of 

 the fruit rhomboid, acute, entire. A. ladniata var. americana Torr. 



HAB. Salt marshes. N. Y. to Car. June Aug. 0. Stem 

 mostly procumbent. Leaves covered with small grayish scales. 

 Floicers in axillary clusters. Sea Orachc. 



3. A. patula Linn. : stem herbaceous, spreading ; leaves triangular- 

 hastate, acuminate, smooth above, irregularly toothed ; the upper ones 

 entire ; perianth of the fruit submuricate on the sides. 



HAB. N. Y. to Car. Aug. Stem prostrate, 12 feet 

 long. Leaves on petioles nearly an inch long. Flowers clus- 

 tered on axilla/y and terminal spikes. 



4. A. arenaria Nutt. : stem herbaceous, spreading ; leaves oblong- 

 ovate, subsessile, silvery-mealy beneath, very entire ; upper ones acute 

 or acuminate ;. perianth of the fruit muricate, dentate, retuse. 



HAB. Sea coast. N. J. to Car. Aug., Sept. 0. Stem a foot 

 high, angular, much branched. Lower leaves often cuneate. 

 Flutcers monoecious ; the sterile ones in short glomerate spikes 

 at the end of the branches ; the fertile ones in axillary clusters. 



5. A. kortensis Linn. : stem erect, herbaceous ; leaves triangular,, 

 dentate, green on both sides; perianth of the fruit ovate, reticulate, 

 entire ; flowers in terminal interrupted racemes or spikes. 



HAB. Cultivated grounds. N. S. ; rare. Torr. July. 0. 

 Stem 3 4 feet high.' Leaves 23 inches long. Floictrs green. 

 Introduced. 



3. ACNIDA. Linn. 



Dioecious. STERILE FL. Perianth 5-partcd. Stamens 

 5. FERTILE FL. Perianth 3-parted. Styles none. Stig- 

 mas 3 5, sessile. Capsule 1-seeded. Dioecia. Pentandria. 



1. A. cannabina Linn. : leaves ovate-lanceolate ; capsules smooth, 

 acutely angled. 



HAB. Marshes. Can. to Flor. July, Aug. 0. Stem 3 6 

 feet high, slightly angled. Leaves alternate, ribbed, 2 5 inches 

 long, petioled. Flowers small, green, in large axillary and ter- 

 minal panicles. Water Hemp. 



2. A. ruscocarpa Mich. : leaves oval-lanceolate ; capsules obtusely?, 

 angled, rugbse. 



