432 CHENOPODIACE^. (gOOSEFOOT FAMILY.) 



* * Pericarp persistent upqn the smooth seed ; leaves more or less sinuate-den- 

 tate [except in C. polyspermum). 



C. POLYSPERMUM, L. Low, often spreading, green and jvholli/ destitute 

 of mealiness ; leaves all entire, oblong or ovate and on slender petioles ; flowers 

 very small, in slender panicles in all the axils, the thin lobes of the calyx very 

 incompletely enclosing the fruit; seed obtuse-edged. — Sparingly naturalized 

 in the Eastern States. (Adv. from Eu.) 



C. Alhum, L. (Lamb's-Quarters. Pigweed.) Erect (1-4° high), 

 inore or less mealy ; leaves varying from rhombic-ovate to lanceolate or the 

 uppermost even linear, acute, all or only the lower more or less angulate-toothed ; 

 clusters spiked-panicled, mostly dense; calyx (f wide in fruit) with strongly 

 carinate lobes, nearly or quite covering the seed. — Introduced everywhere. 

 (Nat. from Eu.) — V'ar. viride, Moq., more common eastward, is less mealy 

 and with less dense inflorescence. 



C. URI5ICUM, L. Rather pale or dull green, nearly destitute of mealiness, 

 Avith erect branches (1-3° high); leaves triangular, acute, coarsely and 

 sharphj mani/-toothed : spikes erect, crowded in a long and narrow racemose 

 panicle; calyx-lobes not keeled; seed icith rounded margins. — Apparently 

 throughout our range. (Nat. from Eu.) 



C. MiniXLE, L. Kesembles the preceding, but less erect, loosely branched 

 (1-2° high); leaves rhomboid-ovate, acute, coarsely and sharply unequally 

 ^oo/Aet/, thin, bright green ; spikes or racemes diverging, someivhat corymhed ; 

 calyx-lobes scarcely keeled ; seed sharp-edged. — From N. Eng. to Mich, and 

 Mo. (Adv. from Eu.) 



3. C. h^bridum, L. (Maple-leaved Goosefoot.) Bright greeu 

 throughout; stem widely much branched (2-4° high); leaves thin (2-6' 

 long), somewhat triangular and heart-shaped, taper-pointed, sinuate-angled, 

 the angles extending into a/ei« large and pointed teeth ; racemes diffusely and 

 loosely panicled, leafless ; calyx not fully covering the fruit, its lobes keeled. 

 — Indigenous from western N. Y. and Ky., westward across the continent ; 

 introduced eastward. 



§2. Annual or perennial herbs, somewhat mealy, not glandular-pubescent: 

 fruiting cali/x dry; seed large, subglobose, vertical, exserted ; embryo a 

 complete ring. 

 C. GLAtcuM, L. (Oak-leaved Goosefoot.) Low (5-12' high), spread- 

 ing, glaucous-mealy ; leaves sinuately pinnatifid-toothed, oblong, obtuse, pale 

 green above ; clusters in axillary spikes, small ; seed sharp-edged. — Through- 

 out our range and westward. (Nat. from Eu.) 



C. Bonus-Henriclts, L. (Good-King-Hexry.) Stout, erect (1-2° high), 

 mostly simple; leaves broadly triangular-hastate (2-3' long), obtuse or acute, 

 snbsiiinate or entire ; flowers somewhat densely paniculately spiked ; seed with 

 obtuse edges. (Blitum Bonus-Henricus, Reichenb.) — Sparingly introduced. 

 (Adv. from Eu.) 



§ 3. Annual, glabrous ; calyx more or less fleshy in fruit and often colored, en- 

 closing the utricle ; seed mostly vertical ; embryo a complete ring ; flowers 

 in crowded clusters, axillary or in spikes. 



4. C. rubrum, L. (Coast Blite.) Stem angled, much branched; 

 leaves thickish, triangular-lanceolate, tapering below into a Avedge-shaped 

 base and above into a slender point, sparingly and coarsely toothed, the upper 

 linear-lanceolate; clusteis scattered in axillary leafy spikes ; calyx-lobes 2-4, 

 rather fleshy ; stamens 1 - 2 ; seed shining, the margin acute. (Blitum mariti- 

 mum, Nutt.) — Sea-coast of Northern States, and in saline places to Minn. (Eu.) 



5. C. capitatum, Watson. (Strawberry Blite.) Stem ascending, 

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



