366 



CHENOPODIACEAE (GOOSEFOOT FAMILY) 



a. Glandular, more or less aromatic. 



Flowers glomerate ; glomerules in bracteate or almost naked spikes 



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



Flowers pubescent ; lobes of leaves angled, obtuse . . 



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



gled, acutish .......... 



a. Not glandular or aromatic, often mealy 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 glomerules becoming red and berry-like in fruit . 

 Flowers spicate, not succulent in fruit ...... 



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 . . . . 



Flowers in axillary glomerules ; seed 0.5 mm. broad. . 

 Leaves pale at least beneath, obtuse ...... 



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 ......... 



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

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



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



mealy ; leaves rhombic, irregularly few-toothed . . 



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 .......... 



Leaves rhombic-ovate with several to many acuminate 



teeth on each side. 



. Seeds dull ; inflorescences short, spreading, axillary, 



rather loose ......... 



Seeds (not pericarp) shining ; inflorescences suberect, 

 moniliform ......... 



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

 ing from the base to the summit ..... 



c. Pericarp loose, readily detached from the seed. 



Leaves thin, entire or somewhat toothed, scarcely at all mealy 

 Leaves entire, linear or nearly so, very mealy at least beneath 



1. C. ambrosioides. 



2. O. Botrys. 



3. C. incisum. 



4. O. eapitatum. 



5. C- Sonus-Henricus 



6. C. rubrum. 



7. O. humile. 



8. C. glaucitm. 



9. C. hybridum. 

 10. C. Vulvaria. 



11. O. album. 



12. C. Berlandieri. 



13. C. murale. 



14. C. urbicum. 



15. C. polyspermum, 



16. C. Boscianum. 



17. C. leptophyUum. 



1. C. AMBROSIOIDES L. (MEXICAN TEA.) Annual, sm oothish ; leaves slightly 

 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- 

 pinnatifid ; 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 

 sinuate-pinnatifid 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. B6TRYS 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. eapitatum (L.) Asch. (STRAWBERRY ELITE.) Stem ascending, 

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

 clusters simple (large}, interruptedly spiked, the upper leafless; stamens 1-5; 

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

 margin. (Blitum 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. B6Nus-HENRicus L. ( GOOD-KING-HENRY.) Stout, erect (0.8-3 m. 

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



