120 CHENOPODIACEAE. 



separate or united by their bases; a rudimentary ovary sometimes present. 

 Pistillate flowers subtended by 2 bractlets which enlarge in fruit and are more 

 or less united, sometimes quite to their summits; perianth none; stigmas 2. 

 Utricle completely or partially enclosed by the fruiting bractlets. Seed vertical 

 or rarely horizontal; embryo annular; endosperm mealy. [From a Greek 

 name of orache.] About 150 species, of wide geographic disribution. Type 

 species: Artiplex hortensis L. 



Leaves, at least some of them, toothed. 



Sides of the bracts tubercled or crested. 1. A. pentandra. 



Sides of the bracts unappendaged. 2. A. dominf/ensis. 



Leaves entire. 3. A. arenaria. 



1. Atriplex pentandra (Jacq.) Standley, N. A. Fl. 21: 54. 1916. 



Axyris pentandra Jacq. Sel. Stirp. Am. 244. 1763. 

 Atriplex cristata H. & B.; Willd. Sp. PI. 4: 959. 1806. 



Annual or perennial, branched, the branches procumbent or ascending, 3-8 

 dm. long, scurfy when young, becoming glabrate. Leaves alternate, sessile or 

 short-petioled, oblong to rhombic or obovate, 1-3 cm. long, obtuse or acute at 

 the apex, mucronate, cuneate at the base, repand-dentate, undulate or the upper 

 entire, white-scurfy beneath, green above; flowers monoecious, the staminate 

 in dense short terminal spikes, the pistillate clustered in the axils; fruiting 

 bracts cuneate-orbicular, about 3 mm. long, united only at the base, sharply 

 dentate, the sides bearing 2 dentate crests or irregularly tubercled ; seed brown. 



Coastal rocks and sands, throughout the archipelago from Great Bahama south 

 to Andros, Mariguana, Atwood Cay, and Grand Turk : Florida ; Cuba to St. Jan ; 

 Jamaica ; Curacao ; Venezuela and Colombia to Peru. CRESTED ATRIPLEX. 



2. Atriplex domingensis Standley, N. A. Fl. 21: 55. 1916. 



Annual, woody, much branched, the branches decumbent, spreading, scaly, 

 2 dm. long or longer. Leaves alternate, nearly sessile, deltoid or deltoid- 



cuneate, 2 mm. long, coarsely 5-toothed above, their sides unappendaged; seed 

 dark brown. 



White-lands, Eastern Cay, Turk's Islands : Hispaniola. DOJIINGAX ATRIPLEX. 



3. Atriplex arenaria Nutt. Gen. 1: 198. 1818. 



Atriplex cristata arenaria Kuntze, Rev. Gen. PI. 546. 1891. 



Annual, pale, stem densely silvery-scurfy, bushy -branched, 1-4.5 dm. high, 

 the branches ascending or decumbent, angular. Leaves oblong to obovate, 

 entire, short-petioled or sessile, 1-4 em. long, whitish-scurfy beneath, the lateral 

 veins few and obscure; staminate flowers in terminal or axillary spikes; pis- 

 tillate flowers in axillary clusters much shorter than the leaves ; fruiting bracts 

 triangular wedge-shaped, broadest above, 4-6 mm. wide, united nearly to the 

 several-toothed summits, their margins entire, their sides reticulated, or some- 

 times crested or tubercled. 



Coastal sands. Eleuthera, Anguilla Isles and Water Cay : Nova Scotia to 

 Texas ; Bermuda ; Cayo Sabinal, Cuba. SEA-BEACH ATRIPLEX. 



3. DONDIA Adans. Fam. PI. 2: 261. 1763. 



Fleshy herbs or low shrubs, with alternate narrowly linear, thick or nearly 

 terete, entire sessile leaves, and perfect or polygamous bracteolate flowers, 



