CHENOPODIACEAE (gOOSEFOOT FAMILY) 



165 



late: ovary tomentose above and seed horizontal. — ^Wyoming and Colorado 

 and westward. 



2. Kochia vestita (Wats.) A. Nels. Habit of the preceding: densely villous 

 throughout and sub tomentose: ovary oblong, nearly equaling the calyx, very 

 pubescent. (K. americana vestita Wats. Proc. Am. Acad. 9: 93. 1874.) — 

 Colorado to Nevada. 



Kochia scoparia Schrad. Annual, pubescent or becoming glabrate; stem erect, slender, 

 leafy, 3-8 dm. tall: leaves linear-lanceolate or linear, ciliate, acuminate, 2-5 cm. long, 2-4 

 mm. wide, the upper graduaU^r smaller; flowers sessile in the axils of the upper leaves, 

 forming short dense bracted spikes: fruiting calyx-segments each with a short triangular 

 horizontal wing. — An introduction from the old world; occasionally in our range. 



7. SALICORNIA L. Samphire 



Low fleshy saline plants, mostly herbaceous, and with jointed stems, op- 

 posite branches, and scale-like leaves. Flowers mostly perfect, immersed 

 by threes in the depressions of a close cylindrical spike. Calyx a fleshy 

 rhomboidal sac with an anterior opening, adherent by a narrow line to the 

 rachis. Stamens 1 or 2, exserted in flower. Ovary oblong; styles 2-3. Peri- 

 carp adherent to the vertical seed. 



1. Salicornia rubra A. Nels. Bull. Torr. Bot. Club 26: 1899. Annual 

 with a strong taproot, erect, pyramidal in form, closely and divaricately 

 branched from base to summit, the opposite branches regularly at right 

 angles to the preceding pair and gradually shorter upward, the lower branches 

 themselves similarly branched, rather stout, about 3 mm. in diameter when 

 green, joints about as long as broad: scales short, approaching triangular, 

 much wider than long, subacute: fruiting spikes 2-4 cm. long, very numerous, 

 assuming a ruby red at maturity: middle flower higher than the lateral ones, 

 reaching to the sunmiit of the joint: the calyx broadly ovate, about 1.5 mm. 

 long: utricle obscurely pubescent, oval, 1 mm. long. S. herbacea. — Strongly 

 alkaline and saline shores; Rocky Mountain ponds and lakes. 



8. ATRIPLEX L. Saltbush. Orache 



Annual or perennial, herbaceous or shrubby, usually more or less mealy or 

 scurfy-silvery. Leaves alternate or some of them opposite. Flowers monoe- 

 cious or dioecious, in axillary clusters or panicled spikes; the staminate ebrac- 

 teate, and with 3-5-cleft perianth; the pistillate without perianth, inclosed 

 in a pair of more or less united compressed bracts which become enlarged and 

 inclose the fruit. Styles two; pericarp thin and membranous; seed free and 

 vertical. For satisfactory determination of the species well-matured fruiting 

 bracts are necessary. 



Annuals; radicle inferior or subascending. 

 Fruiting bracts,very thin, broadly oval .... 

 Fruiting bracts triangular-ovate, herbaceous, with free tips, 

 Plant low (2-3 dm.), several stemmed from the base . 

 Plant tall (4-10 dm.), freely branching upward. 

 Very fleshy, usually rubescent and glabrate 

 Scarcely fleshy, somewhat scurfy, greenish-gray • 

 Annuals; radicle superior. 



Fruiting bracts ovate, small, 2 mm. long. 



Unit^, thin, unappendaged 



Margin free, truncately 3-toothed ...... 



Fruiting bracts rhombic-orbicular, or obovate-truncate, larger, 

 3 mm. or more broad. 

 Apex truncate, with 3-toothed margin 



Indurated and sides appendaged. 



Appendages more or less herbaceous 



Appendages short flashy processes 

 ials; "' ' '^ 



Perennials; radicle superior. 



Shrubs: bracts margined or winged. 



Bracts suborbicular, thicl^ and scurfy 



Bracts broadly winged 

 B" 'p '(hrubby: bracts thickened, 



1. A. hortensis. 



2. A. subspicata 



3. A. camosa. 



4. A. spatiosa. 



5. A. Suckleyana. 



6. A. Wolfii. 



7. A. truncata. 



8. A. argentea. 



9. A. philonitra. 



10. A. confertifolia. 



11, A. canescens. 



