GOOSEFOOT FAMILY 251 



1. E. lanata (Pursh) Moq. Undershrub, white or later rufous-tomentose, 2-10 

 dm. high ; leaves linear, with revolute margins, 2-4 cm. long, 2-5 mm. wide; stamin- 

 ate flower-clusters above the pistillate ones, in some individuals much more numer- 

 ous, in others few or none; fruiting bracts 4-6 mm. long, lanceolate; horns about 

 1 mm. long. Plains and hills: Sask. — Tex. — Calif. — -Wash. Son.— Plain — • 

 Mont. Je-S. 



2. E. subspinosa Rydb. Dioecious shrub, 6-10 dm. high; leaves linear or 

 oblong, obtuse, entire, 1-3 cm. long; flower-clusters of the staminate plant 

 crowded and forming simple, leafy spikes; fruiting bracts lanceolate, about 6 

 mm. long; horns usually about 2 mm. long. Rocky hills in desert regions: 

 s Utah — Ariz. — ^Calif.; Sonora. Son. Ap-S. 



12. SALICORNIA (Tourn.) L. Glasswort, Samphire. 



Annual or perennial, fleshy, glabrous herbs, with scale-like leaves; branches 

 and leaves opposite; internodes very short. Flowers perfect or polygamous, in 

 cyhndric spikes, sunk in cavities of the internodes, 3-7 together. Calyx fleshy, 

 with a truncate or 3-4-toothed border. Stamens 2, rarely 1; filaments filiform 

 or subulate. Utricle oblong or ovoid, included in the spongy perianth. Seeds 

 erect; endosperm wanting; embryo conduplicate. 



Annual with a taproot. 1. S. rubra. 



Perennial with a creeping rootstock. 2. 5. utahensis. 



1. S. rubra A. Nels. Stem erect, divaricately branched throughout, 1-2 

 dm. high; scale-like leaves short, broadly triangular, wider than long; fruiting 

 spikes 2-4 cm. long; internodes v£ry short, scarcely exceeding the middle flower 

 of the nodes below. Border of alkaline lakes: Sask. — Kans.— Colo. — Nev. — 

 B.C. Plain. Au-S. 



2. S. utahensis Tidest. Stems 1-2 dm. high, with short branches; scale- 

 like leaves connate, broadly triangular, about 3 mm. long, scarious-ihargined ; 

 internodes 1-2 cm. long or the lower shorter, 3-4 mm. thick; spikes on short 

 lateral branches, 8-15 mm. long, 4-5 mm. thick; bracts broader than long. 

 Alkaline and saline soil: Utah. Son. Je. 



13. ALLENROLFIA Kuntze. Burro Weed. 



Fleshy, jointed shrubs, with alternate branches and scale-like leaves. Flow- 

 ers perfect, arranged spirally in crowded spikes. Calyx of 4 or 5 concave, cari- 

 nate, imbricate sepals, more or less united. Stamens 1-2; filaments slender, 

 exserted. Ovary oblong; styles 2 or 3, distinct. Fruit with a membranous 

 pericarp, free from the seed. Albumen copious; radicle inferior, basal. [Spiro- 

 stachys S. Wats., not Sond.] 



1. A. occidentalis (S. Wats.) Kuntze. Shrub 6-15 dm. high, fleshy; scale- 

 like leaves broadly triangular, amplexicaul; spikes numerous, cylindric, 1-2 cm. 

 long; bracts broadly rhombic; flowers small, crowded; seeds less than 0.5 mm. 

 long. Spirostachys occidentalis S. Wats. Salt marshes: Utah — Ariz. — Calif. 

 —Nev. Son. Jl-S. 



14. SARCOBATUS Nees. Greasewood, Chico. 



Spinescent branched shrubs, with fleshy narrow leaves, monoecious or dioeci- 

 ous. Staminate flowers in terminal spikes, without calyx; stamens arranged 

 around the base of a peltate scale. Pistillate flowers axiUary, soUtary, with a 

 closed compressed calyx, margined by a narrow border, which develops into a 

 broad membranous horizontal wing. Ovary thin and hyaline; embryo spiral; 

 endosperm scant or none. 



1. S. vermiculatus (Hook.) Torr. Erect shrub, 1-3 m. high, divaricately 

 branched and spinescent; leaves linear or linear-filiform, fleshy, 1-4 cm. long; 

 aments of the staminate flowers cylindric, 0.5-3 cm. long; stamens 3; fruiting 

 calyx about 6 mm. long, its wing-margin 6-12 mm. broad. Alkaline flats: 

 Sask.— Tex.— Calif.— Wash. Son.—Plain—Mont. My-S. 



