272 



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SYNGENESIA iEQUALlS 



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7- HORRIDULUS. 



C. foliis sessilibus, 

 pinnatifidis, acute in- 

 * ■ spinosissimis 



cisis 



subtus lanuginosis; flo- 

 ribus confertis, brac- 

 teatis; bracteis gemin- 

 atim spinosissimis; in- 

 voliicris inermibus. 



r 



Leaves sessile, pin 



natifid 



tely notch 



d, very spinous, lan- 



uginous 



_ underneath , 



flowers crowded, brac- 

 teate ; bracteas very 



spinous 



? 



the 



spines 



generally m p 

 olucrum unai 



m 



Pursh, 2. p. 507. Nutt. 2. p. 130. 

 Cirsium horridulura. Mich. 2. p. 90. 

 Carduus spinosissimus. Walt. p. 194. 



Root perennial, fusiform. Stem erect, simple, 2 — 3 feet high, lanugi- 

 nous. Leaves sessile, crowded near the base of the stem, pinnatifid, seg- 

 ments lobed, and toothed, and acutely spinous, hairy on the upper surface, 

 lanuginous underneath. Flowers sometimes terminal, solitary, generally 

 axillary, on very short peduncles, crowded near the summit of the stem. 

 Bracteas 20 — 30 around the base of each flower, scarcely longer than 

 the involucrum ; the interior appear pectinately spinous, on the exterior 

 the spines are distinctly arranged in pairs. Involucrum ventricose, scales 

 numerous, lanceolate, very acute, but scarcely spiny, a little hairy. Co- 

 rolla pale purple. Seeds oblong, shining, crowned with a feathered pap- 

 pus. 



Grows in drv noor soils. Very generally diffused over our country. 



ows in dry poor soils. 

 Flowers March — April. 



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LIATRIS. Gen. Pl. 1263. 



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Involucrum oblon- 

 gum.imbricatuin. Re- 

 ceptaculum nudum 

 Pappus plumosus, sae- 

 plus coloratus. Semi 



na pubescentia, ob 



? 



conica. 



H^' 



u. ■ 



-^"r^- 



Involucrum oblong, 

 imbricate. Recepta- 

 cle naked. Pappus 

 feathered, generally 

 coloured. Seeds pu- 

 bescent, inversely co- 

 nic. 



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