40 ENGLISH BOTANY. 



those of the disk turbinate-cylindrical, equally ribbed, with or 

 without a crown. 



SPECIES I— CHRYSANTHEMUM SEGETUM. Lirm. 



Plate DCCXIII. 



Jidch. Ic. Fl. Germ, et Helv.-Vol. XVI. Tab. CBILXXXVI. Fig, I. 



Billot, Fl. Gall, et Germ. Exsicc. No. 395. 



Zantbophthalmum segetnm, C. H. SchuUz, iiber die Tanacet. p. 17. 



Leaves glabrous and glaucous, oblong or oblong-wedgeshaped, 

 inciso-serrate or pinnatifid, the lower ones attenuated at the base 

 into a winged petiole, the upper amplexicaul. Anthodes solitary, 

 pericline flattish. Phyllaries broadly ovate, with very broad 

 liglit-brown scarious margins and tips. Florets of the ray yellow. 

 Achenes of the ray - florets sub - trigonous with narrow lateral 

 wiDgs, those of the disk -florets sub-cylindrical, all without a 

 crown. 



A weed in cultivated fields. Generally distributed, but becom- 

 ing scarce in the more highly cultivated districts through im- 

 proved farming. 



England, Scotland, Ireland. Annual. Summer 

 and Autumn. 



Stem erect, 12 to 18 inches high, brancbed, the branches rather 

 elongate and sjireading-ascending. Leaves slightly fleshy, more or 

 less deeply divided ; the uppermost ones sometimes nearly entire. 

 Peduncles hollow, enlarged upwards. Autliodcs (including the ray) 

 1\ to 2|^ inches across. Pericline slightly umbilicate, with tlie phyl- 

 laries glaucous-green, broadly edged with a dry semi-transparent 

 light-brown border. Florets of the disk very broad, irregularly 

 toothed at the apex, Achenes brownish-white, with a compressed 

 triangular cross-section from tlie development of a coi-ky wing 

 on each side nearer the outer than the inner face ; achenes of the 

 disk without Aviugs. Plant glabrous and glaucous. 



Corn Ilarigold. 



French, Chrysantheme des Bles. German, Saal Wuchei-hJume. 



This plant may still be found in our cornfiekl.s, although careful firming li.ns 

 greatly diminished its places of habitation, and shortly it may find the garden its only 

 place of refuge. It is a very troublesome weed to the fanner, particularly iu the turnip 

 fields of Norfolk, on a sandy soil. In Denmark there is a law to oblige farmers to 

 root it up out of their fields ; and Threlkeld states, in 1727, that in Britain " Mannoiu" 

 courts do amerce careless tennants who do not weed it out before it comes to seed ;" a 

 laudable practice worthy of being retained. It is generally called the Com Marigold ; 



