366 CHENOPODIACEAE (GOOSEFOOT FAMILY) 



a. Glandular, more or less aromatic. 



Flowers glomerate ; glomerules in bracteate or almost naked spikes 1. C. ambrosioides. 

 Flowers solitary, sessile in ojien forking- cymes, these in loose spikes. 

 Flowers pubescent : lobes of leaves angled, obtuse . . . 2. C. Boirys. 

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

 gled, acutish 3. (7. incisum. 



a. Not glandular or aromatic, often raealv and heavy-scented b. 



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

 the diameter of the utricle. 

 Flowers in glomerulos becoming red and berry-like in fruit. . 4. C. capitatum. 



Flowers spicate, not succulent in fruit b. C. Bonus- Henricus 



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

 branches short. 

 Leaves bright green, chiefly acute. 

 Flowers in leafy spikes ; seed 1 mm. broad . . . . 6. C. nCbrum. 

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



Leaves pale at least beneath, obtuse 8. (7. glaucwm. 



b. Seeds all horizontal ; 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. O. hybridv/tn. 



d. Leaves small, entire, ovate, about as broad as long, very fetid . 10. C. Vulvaria. 

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



Seeds 1.3-1.5 mm. in diameter ; flowers glomerate, usually 



meal}- ; leaves rhombic, irregularly few-toothed . . 11. C. album. 

 Seeds about 1 mm. in diameter ; inflorescence generally loo.se. 

 Leaves small, conspicuously mucronate, all entire or the 

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



summit 12. C. Berlandieri, 



Leaves rhombic-ovate with several to many acuminate 

 teeth on each side. 

 Seeds dull ; inflorescences short, spreading, axillary, 



rather loose 13. O. murale. 



Seeds (not pericarp) shining ; inflorescences suberect, 



moniliform U. C urbicum. 



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

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



C. Pericarp loose, readily detached from the seed. 



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

 Leaves entire, linear or nearly so, very mealy at least beneath 17. C. leptophyllum. 



1. C. AMBROsioiDES L. (MEXICAN Tea.) Annual, smoothish ; leaves slirjhtly 

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

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

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

 especially south w. (Nat. from Trop Am.) 



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

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

 pinnatifid ; spikes more or less elongated, mostly leafless. — Same , range, 

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

 from Trop. Am.) 



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

 sinnate-pinnatifid or -toothed., the lobes ovate-lanceolate., entire or nearly so, 

 acAitish ; 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. BoTRYS L. (Jerusalem Oak, Feather Geranium.) Glandular- 

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

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

 not perfectly inclosed. — Widely introduced. (Nat. from ?vU.) 



4. C. capitatum (L.) Asch. (Strawhekry Blite.) Stem ascending, 

 branching ; leaves triangular and somewliat lialberd-shaped, sinuate-toothed ; 

 clusters simple {large), interruptedly spiked, tlie upper leafless; stamens 1-5; 

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

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

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

 and bright red in fruit, when the large clusters look like strawberries. (Eu.) 



5. C. Bonii.s-Hknricus L. (Good-King-Henry.) Stout, erect (0.8-3 m. 

 high), mostly simple ; leaves broadly triangular-hastate (5-12 cm. long), sub' 



