366 CHENOPODIACEAE (GOOSEFOOT FAMILY) 



«*. Glandular, more or less aromatic. 



Flowers glomerate ; glomerules in brncteate or almost naked spikes 1. C. ambroeioides. 

 Flowers solitary, sessile in open forking cymes, these in loose spikes. 

 Flowers pubescent ; lobes of leaves angled, obtuse . . , 2, C. Boirya. 

 Flowers merely pulverulent-glandular; lobes of leavee not an- 

 gled, acutish 3. ^7. inciamn, 



I*. Not glandular or aromatic, often mealy and heavy-scented &. 



&. Seeds all vertical ; styles filiform, one fourth to one half as long as 

 the diameter of tlie utdcle. 

 Flowers in glomerules becoming red and berry like in fruit. . 4. C. aapUatwm. 



Flowers spicate, not succulent in fruit b. O. Bonua-Menricus 



h. Seeds vertical and horizontal in the same inflorescence ; style- 

 branches short. 

 Leaves bright green, chiefly acute. 

 Flowers in leafy spikes ; seed 1 mm. broad . • . . Q. O. rubrtmi. 

 Flowers in axillary glomerules ; seed 0.5 mm. broad . . 7. C. humile. 



Leaves pale at least beneath, obtuse 8. O. fflaucum. 



b. Seeds all horizantal ; style-branches short c. 

 c^ Pericarp coherent to the surface of the seed d, 

 d. Leaves large, green, sharply few-toothed, abrupt or usually 



cordate at base 9. (7. ?^bridwni. 



d. Leaves small, entire, ovate, about as broad as long, very fetid . 10. O. VulvcMHa. 

 d. Leaves longer than broad, cuneate at the base. 



Seeds 1.3-1.6 mm. in diameter; flowers glomerate, usually 



mealy ; leaves rhombic, irregularly few-toothed . . 11. 0. album. 

 Seeds about 1 mm. in diameter ; inflorescence generally loose. 

 Leaves small, conspicuously mucronate, all entire or the 

 lower 1-3-toothed on each side ; plant flowering at the 



summit 12. <7. BerlamMeri. 



Leaves rhombic-ovate with several to many acuminate 

 teeth on each side. 

 Seeds dull ; inflorescences short, spreading, axiUary, 



rather loose 13. ^. m'uraZe. 



Seeds (not pericarp) shining ; Inflorescences suberect, 



moniliform 14. C. urhieum. 



Leaves ovate-oblong, entire, not mucronate; plant flower- 

 ing from the base to the summit 15. C. polyapermum. 



C. Pericarp loose, readily detached from the seed. 



Leaves thin, entire or somewhat toothed, scarcely at all mealy 16. C BoHciawwrn. 

 Leaves entire, Unear or nearly so, very mealy at least beneath 17. (7, leptophyilwrn. 



1. C. AMBROsioioES L. (MEXICAN Tea.) AuHual, smoothish ; leaves & 



petioled, oblong or lanceolate, repand-toothed or nearly entire, the upper 

 tapering to both ends ; spikes densely flowered^ leafy ^ or intermixed with leaves ; 

 fruit perfectly inclosed in the calyx. — Waste places, throughout our range, 

 especially southw. (Nat. from Trop Am.) 



Var. ANTHELMfNTicuM (L.) Gray. (Wormseed.) Perennial (at least south- 

 ward) ; leaves more strongly toothed, the lower sometimes almost laciniate- 

 pinuatifid ; spikes more or less elongated^ mostly leafless, — Same range, 

 sometimes appearing distinct, but all differential characters inconstant. (Nat. 

 from Trop. Am.) 



2. C. iNcisuM Poir. Annual, glandular-pulverulent and aromatic ; leaves 

 Tiinuate-pinnatifld or -toothed, the lobes ovate-lanceolate, entire or nearly so, 

 acutish; flowers minute, nearly smooth, in open forking cymes borne in elon- 

 gated mostly leafy inflorescences. — Thoroughly established and abundant in 

 cultivated fields, North Berwick, Me. (Parlin). (Adv. from Trop. Am.) 



3. C. B6TRVS L. (JERUSALEM Oak, Feather Geranium.) Glandular- 

 pubescent and viscid ; leaves slender-petioled, oblong, obtuse, sinuate-pinnatifid, 

 the lobes angled and obtuse; racemes cyme-like, spreading, loose, leafless; fruit 

 not perfectly inclosed. — Widely introduced. (Nat. from Eu.) 



4. C. capitsltum (L.) Asch. (Strawberry Elite.) Stem ascending, 

 branching ; leaves triangular and somewhat halberd -shaped, sinuate-toothed ; 

 clusters simple ijarge), interrxiptedly spiked, the upper leafless; stamens 1-5; 

 calyx berry-like in fruit ; seed ovoid, flattish, smooth, with a very narrow 

 margin. (Blitnm L.) — Light soil and newly cleared land, e. Que. to Alaska, 

 3. to N. J., Fa., 111., Minn., and in the Rocky Mts. — The calyx becomes pulpy 

 Mnd bright red in fruit, when the large clusters look like strawbervies, (Eu.) 



6. C. B6Nus-HENRicus L. (Good-King-Hfm:y.) Stoui, erect (0.8-3 ni. 

 bigh), mostly simple; leaves broadly trianguhir-hastate (5-lii cm. long), sub- 



