470 SYNGENESIA— POL.-FRUSTRAN. Centaurea. 



base with smaller prickles. Radiant florets smaW, near]y re- 

 gular. Disk convex, with pale red anthers and stigmas. Seeds 

 obovate, polished, particoloured, with scarcely any crown. The 

 irritability oi the Jilaments has been described by several authors. 

 Wlien handled the herbage leaves a glutinous matter on the 

 fingers, which is very bitter. 



7. C. solstitialis. Yellow Star-thistle. St. Barnaby's 

 thistle. 



Flowers terminal, solitary. Calyx-scales doubly spinous. 

 Stem winged, from the decurrent, lanceolate, unarmed 

 leaves ; radical leaves lyrate. 



C. solstitialis. Linn. Sp. PL 1297 . ff'iUd.v.3. 2300. Fl.Br.9\3. 

 Engl. Bot.v. 4. t. 243. Tr. of Linn. Soc. v. 2. 236. 



Calcitrapa n. 1 93. Hall. Hist. v. 1 . 83. 



Jacea lutea annua stellata et alata, foliis Cyani. Moris, v. 3. 14.5. 

 .tect. 7. t. 34./. 27. 



Carduusstellatusluteus, foliis Cyani. RaiiSyn.\96. Bauh.Pin.387. 



C. stellatus mitior apulus, Spina solstitialis altera. Column. Ecphr. 

 V. J.30 /. 31. 



(/. solstitialis. Ger. Em. 1 166./. 



Spina solstitialis. Dod. Pempt.734.f. Lob. lev. 2. \2./. Bauh. 

 Hist. V. 3. p.]. 90. f. 9]. 



Leucacantha quorundani. Dalech. Hist. 14G4./. 



Yellow Thistle. Petiv. H. Brit. t. 21./. 12. 



In cultivated fields, and about hedges, rare. 



By hedges not far from Cirencester, Gloucestershire. Bohart. 

 Near Northflect, Kent. Hudson. At Arminghall, near Nor- 

 wich. Mr. Crowe. In a grassy field near Dartford, Kent. Mr. 

 Charles Sinclair Cullcn. Near St Edmund's hill^ Bury. Rev. 

 Br. Webb. 



Annual. Julij — September. 



Root tapering, whitish. Herb of a hoary green, slightly clothed 

 with cottony down, a little glutinous, intensely bitter. Stem 

 1| or 2 feet high, branched, moderately spreading, leafy, unin- 

 terruptedly winged, from the decurrent bases of the lanceolate, 

 acute, entire, wavy leaves of the branches. Radical leaves 4 or 5 

 inches long, lyrate ; their lobes alternate, acute, toothed or 

 jagged ; terminal one large. Fl. solitary at the end of each 

 branch, bright yellow. Calyx-scales downy, each of the middle 

 ones terminating in a large, spreading, needle-shaped, yellowish 

 thorn, accompanied at the base by 4 or more small, slender, 

 spreading bristles ; several of the lower scales bearing only such 

 bristles, with a rudiment of the central thorn. Radiant Jlorets 

 not much larger than those of the disk. Seeds obovate, smooth. 

 Down unequal, rough, shorter than the hairs of the receptacle, 

 which are extremely slender. 



