SYNGENESIA— POLYG.-SUPERF. Pyrethrum. 453 



brane, overlooked by Haller, though he founded his genus Py~ 

 rethrum on that character. 

 The whole plant is bitter and strong-scented, reckoned tonic, sti- 

 mulating, and anti -hysteric. 



2. P. i?iodoru7?i. Corn Feverfew. Scentless Mayweed. 



Leaves sessile, pinnate; in numerous, capillary, pointed 

 segments. Stem branched, spreading. Crown of the 

 seeds entire. 



P. inodorum. Fl.. Br. 900. Engl. Bot. v. 10. t. 676. Willd. Sp. PL 

 1). 3. 2157. Hook. Scot. 246. Lond.t.lOl. Relh.335. 



Chrysanthemum inodorum. Linn. Sp. PL 1253. With. 734. FL 

 Dan. t. 696. 



Matricaria inodora. Linn. FL Suec.ed. 2. 297- Huds.372. 



Chamsemelum inodorum annuum humilius, foliis obscur^ virenti- 

 bus. DHL in Raii Stjii. 186. Moris, v. 3. 36. n. 15. sect 6. 1. 12. 

 /.8. 



Ch. inodorum, sive Cotula non foetida. Bauh. Hist. v. 3. 120./. 



Buphthalmum. Fuchs. Hist. \ 44. f. Ic.7S.f. 



Mayweed. Petiv. H. Brit. t. 19./. 12. 



In cultivated fields, and by way sides, especially on a gravelly soil, 

 very common. 



Annual. August, September. 



Root tapering, rather large. Herb nearly destitute of scent, at 

 least of the peculiar, agreeable or disagreeable, odours of its 

 tribe. S<em branched, spreading, leafy, angular, smooth. Leaves 

 sessile, pinnate in a lyrate manner ; leaflets in numerous, very 

 narrow, smooth, acute segments, each tipped with a minute 

 point. FL on long, terminal, naked stalks, large, with a con- 

 vex yellow disk, and numerous, large, oblong, abrupt, pure 

 white rays. Calyx-scales smooth, and compared with those of 

 a Chrysanthemum, rather acute, as wanting the dilatation, or 

 appendage, characteristic of that genus, and having a narrow 

 membranous border along the whole margin. The membranous 

 crown of the seed however stamps the genus, and this is entire, 

 not lobed, in the present species. The receptacle is naked, very 

 convex, but not acute. 



A double variety, having a multiplied radius, and an obliterated 

 contracted disk, was found in Norfolk by the late Mr. Crowe. 



I am still in the dark about Chamcemeluni majus, folio tenuissimo, 

 caule rubente, Dill, in Raii Syn. 186 3 found about Battersea 

 and Putney. 



3. P. marittmum. Sea Feverfew. 



Leaves sessile, doubly pinnate, fleshy, pointless; convex 



