CHENOPODIUM 
162 
toothed, teeth recrular or very irregular and hooked, acute to subobtuse. Inflorescence much 
branched ; branches erect or suberect, elongate, tapering, lower ones shorter than the subtending 
leaves. Achenes not quite completely enveloped by the persistent perianths. Seeds about ro — 1*5 mm. 
in diameter, black, rugose, dull. 
(a) C. urbicum var. delto'ideum Neilreich FI. Nied.-Oesterr. i, 279 (1859); C. melanospermum Wallroth 
Sched. Crit. 112 (1822); C. intermedium var. melanospermum Schur PL Transs. 572 (1866); C. urbicum var. 
genuinum Syme Eng. Bot. viii, 19 (1868); C. urbicum Rouy FI. France xii, 42 (1910) excl. race microspermum. 
leones: — Svensk Bot. t. 459, as C. urbicum ; Beck in Reichenbach Icon, xxiv, t. 246, as C. urbicum. 
Camb. Brit. FI. ii. Plate /6j. (a) Flowering shoot. (b) Persistent perianths (enlarged), enclosing the 
achenes. {c) Seeds (three enlarged). Hort. (E. M. H.). 
Exsiccata : — Reichenbach, 660, as C. urbicum ; Todaro, 1323, as C. urbicum ; Welwitsch {Iter Lusit.), 93, 
as C. urbicum ; 215 {FI. Lusit.) as C. urbicum. 
Less mealy than in var. intermedium. Laminae smaller, truncate at the base, margin subentire to 
slightly dentate, teeth spreading and subobtuse. 
(b) C. urbicum var. intermedium Koch Syn. 605 (1837); Babington Man. 250 (1843); Syme Eng. Bot. 
viii, 19 (1868); C. intermedium Mertens und Koch Deutschl. FI. ii, 297 (1826); C. urbicum var. grandidentatum 
Dietrich FI. Boruss. no. 849 (3 (1843); C. urbicum race microspermum Rouy FI. France xii, 43 (1910). 
leones: — Smith Eng. Bot. t. 717, as C. urbicum ; Beck in Reichenbach Icon, xxiv, t. 247, as C. tirbicum 
var. intermedium. 
Camb. Brit. FI. ii. Plate 164. (a) Flowering shoot. {b) Lower leaves. ( c ) Portion of stem (en- 
larged). Cambridge Botanic Garden (R. I. L.). 
{d) Persistent perianth (enlarged), enclosing the 
achene. {e) Seeds (two enlarged). Cornwall 
(C. C. V.) and Cambridge Botanic Garden 
(R. I. L.). 
Exsiccata: — Reichenbach, 1740 et 1740 bis, 
as C. rhombifolium. 
More mealy than in var. delto'ideum. 
Laminae larger, less truncate at the base, 
margin much more strongly toothed, teeth 
very irregular and hooked. Seeds rather 
smaller (about i*i — 1 - 4 mm. in diameter). 
This variety is liable to be confused with 
C. rubrum var. blito'ides. 
Commoner in this country than var. delto'ideum. 
Western and central Europe, Balkan penin- 
sula ; Caucasus, central Asia ; North America 
(adventitious). 
Ditch-banks ; damp, rich, waste places ; 
manure-heaps ; in lowland localities only. 
From Cornwall and Kent northwards to 
Lancashire and Yorkshire; adventitious in 
many of its more northerly stations; Wales — 
? Denbighshire; Scotland — adventitious; Ire- 
land — adventitious near Dublin. 
Southern Scandinavia, Denmark, Ger- 
many, France, central Europe, Russia, 
southern Europe ; south-western and central Asia. 
9. CHENOPODIUM HYBRIDUM. Plate 165 
Chenopodium stramonii folio Dillenius in Ray Syn. ed. 3, 154 (1724). 
Chenopodium hybridum l. Sp. PI. 219 (1753)!; Smith FI. Brit. 275 (1800)!; Eng. FI. ii, 12 (1824); 
Syme E ng. Bot. viii, 17 (1868); C. angulosum Lamarck FI. France iii, 249 (1778); Rouy FI. France xii, 42 (1910). 
leones: — Curtis FI. Lond. ii, 67; Smith Eng. Bot. t. 1919; FI. Dan. t. 2049; Beck in Reichenbach Icon. 
xxiv, t. 243, as C. hybridum f. cymigerum ; t. 244, as C. hybridum f. spicatum. 
Map 34. Distribution of Chenopodium urbicum in Great Britain 
