336 CHENOPODIACE^. [CHENOPODIUM. 



B. SPIROLOBE.ffi. Embryo spiral. 



TRIBE IV. SU-ffiDE-ffi. Stem leafy. Sepals 4-5, not winged at the 

 back 5. Suseda. 



TRIBE Y. SAL.SOLE.ffi. Stem leafy. Sepals 4-5, transversely winged in 

 fruit 6. Salsola, 



1. CHENOPO'DIUM, Tournef. GOOSE-FOOT. 



Erect or prostrate, very variable herbs, usually littoral or on made soil. 

 Stem angled, often striped white or red and green. Leaves entire lobed or 

 toothed. Flowers minute, 2-sexual, ebracteolate ; clusters axillary, or 

 in simple or panicled cymes. Sepals 3-5. Stamens 2-5, perigynous, 

 filaments subulate. Disk 0. Ovary free, depressed or compressed ; styles 

 2-3. Utricle membranous, often enclosed by the calyx. Seed horizontal 

 or vertical, testa crustaceous, albumen floury ; embryo annular. DISTBJB. 

 All climates ; species about 50. ETYM. xv* an( i wvs, goose-foot. 



SECTION 1. Annual. Flowers 5-merous. Styles short. Seeds horizontal. 

 * Leaves quite entire. 



1. C. Vulva'ria, L. ; mealy, diffuse, leaves deltoid-ovate, sepals not 

 keeled covering the utricle. C. ol'idum, Curtis. 



Roadsides and waste places, Edinburgh, and from Northumbd. southd. ; S. and 

 E. Ireland (? extinct); Channel Islands; fl. Aug.-Oct. Annual, foetid. 

 branches 6-18 in., opposite, divaricate. Leaves f-1 in., greasy to the touch, 

 acute, grey-green ; petiole as long or shorter. Spikes small, f-| in., dense, 

 axillary and terminal. Seeds black, punctulate. DISTRIB. From Denmark 

 southd., N. Africa. Odour of stale salt fish. 



2. C. polysper'mum, L. ; glabrous, erect or ascending, leaves ovate, 

 sepals not keeled shorter than the utricle. C. acutifo'lium, Sm. 

 Cultivated ground, manure-heaps, &c., from Berwick southd. ; Channel 



Islands ; fl . Aug.-Oct. Annual. Stem 6-18 in. ; branches many, spreading, 

 leafy. Leaves ^-1^ in., shortly petioled, membranous, obtuse or acute. 

 Cymes ^-1 in., axillary and terminal, simple or panicled ; branches very 

 slender, spreading ; flowers very minute. Seeds minute, dark brown, rough. 

 DISTRIB. Europe, N. Asia ; introd. in N. America. 



** Leaves more or less toothed or lobed. 



3. C. al'bum, L. ; erect, mealy, leaves rhombic or deltoid-ovate sub- 

 entire or irregularly toothed, upper oblong entire, sepals keeled covering 

 the utricle narrowly scarious or all green, seed smooth keeled. 



Waste, especially cultivated ground, N. to Shetland ; ascends to 1,000 ft. in 

 Yorkshire ; Ireland ; Channel Islands ; fl. July-Sept. Yery variable. Stem 

 1-3 ft. ; branches erect or ascending. Leaves 1-3 in., tip acute obtuse or 

 rounded, base cuneate often 3-nerved; petiole usually long and slender. 

 Spikes terminal and axillary, simple or panicled, leafy below. Seed almost 

 black, hardly dotted. DISTRIB. Europe (Arctic), temp. Asia ; introd. in 

 N. America. 



