432 CHENOPODIACE.E. (GOOSEFOOT FAMILY.) 



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

 tate (except in C. polyspermum). 



C. POLYSPERMUM, L. Low, often spreading, green and wholly 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. ALBUM, L. (LAMB'S-QUARTERS. PIGWEED.) Erect (1-4 high), 

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

 uppermost even linear, acute, all or only (he lower more or less ungulate-toothed ; 

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

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

 (Xat. from Eu.) Var. vfRiDE, Moq., more common eastward, is less mealy 

 and with less dense inflorescence. 



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

 with erect brandies (1-3 high) ; leaves triangular, acute, coarsely and 

 sharply many-toothed; spikes erect, crowded in a long and narrow racemose 

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

 throughout our range. (Nat. from Eu.) 



C. MUI$ALE, L. Kesembles the preceding, but less erect, loosely branched 

 (12 high); leaves rhomboid-orate, acute, coarse/ 1/ and sharply unequally 

 toothed, thin, bright green ; spikes or racemes diverging, somewhat corymbed ; 

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

 Mo. (Adv. from Eu.) 



3. C. hybridum, L. (MAPLE-LEAVED GOOSEFOOT.) Bright green 

 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, few 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 calyx dry; seed large, subg/obose, vertical, exserted ; embryo a 

 complete ring. 



C. GLAtcuM, L. (OAK-LEAVED GOOSEFOOT.) Low (5- 12' high), spread- 

 ing, glaucous-mealy ; leaves sinaately pinnat(fid-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-HENRICUS, L. (GOOD-KING-HENRY.) Stout, erect (1 - 2 high), 

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

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

 obtuse edges. (Blitum Bouus-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 ELITE.) Stem angled, much branched; 

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

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

 linear-lanceolate; clusters scattered in axillary leaf y 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 ELITE.) Stem ascending, 

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



