162 SYNGENESIA POLYGAMIA iEQUALIS. [CI. 19. 



Grav. & chalky sit. 0. 7, 8. Stem 2f. Fl. large, purp. Scent musky. 



2. C. acanthoides, 14. 973. (Welted Th.) Leaves decurrent, sinuated, 



verv spinous. Flowers aggregate, somewhat stalked. Calyx 

 globose ; scales linear, partly recurved. 

 Dry waste gr. 0. 6, 7. Green, 3f. Fl. purplish-crimson, smaller. 



3. C. tenuijlorus, 6. 412. (Slender-flowered Th.) Leaves decurrent, 



sinuated, spinous. Flowers aggregate, sessile. Calyx nearly cy- 

 lindrical ; scales ovate at the base ; somewhat recurved at the point. 

 Dry gr. chiefly near the sea. . 6, 7. White, cottony, 4f. Fl.palepurp. 



** Leaves sessile. 



4. C. maridnus, 14.976. (Milk Th.) Leaves wavy, spinous, clasping 



the stem ; radical ones pinnatifid. Calyx-scales leafy, recurved, 

 channelled ; spinous at the margin. 

 Banks. ©. 6, 7. L. shining green, with white veins. Fl. large y purp. 



385. CNlCUS. Plume-thistle. 

 * Leaves decurrent. Stem winged. 



1. Cn. lanceoldtus, Carduus lane. 2. 107. (Spear P.) Leaves decur- 



rent, pinnatifid, hispid, with variously-spreading spinous lobes. 

 Calyx ovate, shaggy. Stem furrowed, hairy. 

 Waste gr. $ . 6 — 9. Stem 4 f. Fl. erect, large, crimson. 



2. Cn. palustris, Card. pal. 14. 974. (Marsh P.) Leaves decurrent, 



pinnatifid, toothed, spinous, rough. Flowers aggregate. Calyx 

 ovate, minutely spinous, nearly smooth. 

 Moist mead. $ .7, 8. Prickly, straight, dark-green,3 — 6f. Fl.purp. 



** Leaves sessile, or partially decurrent. Stem not winged. 



3. Cn. arvensis, Card. arv. 14. 975. (Creeping P.) Leaves sessile, 



pinnatifid, spinous, nearly smooth. Stem panicled, solid. Calyx 

 ovate ; outer scales spinous. Root creeping, tuberous. 

 Fields, and way sides. 2£. 7. Stems 3 — if. FL erect, pale purp. 



4. Cn. Forsteri, (Branching Bog P.) Leaves slightly decurrent, pin- 



natifid, spinous ; downy beneath. Stem panicled, hollow. Calyx 

 ovate, rather cottony ; outer scales spinous. 

 Boggy woods, y.. 7, 8. Stem erect, 3 — 4f. Fl. 2 or 3 together, 

 deep crimson. 



5. Cn. eriophorus, Card, erioph. 6. 386. (Woolly-headed P.) Leaves 



sessile, pinnatifid, with two-ranked spinous segments ; bristly 

 above. Calyx globular, densely woolly, leafy at the base. 

 Grav. and chalky sit. $ . 8. Bushy. Fl. very large. Col. clothed 

 with cottony wool, like a dense cobweb. 



6. Cn. tuberosus, 36. 2562. (Tuberous P.) Leaves deeply pinnatifid, 



lobed, fringed with prickles ; lower ones on long stalks. Stem 

 almost single-flowered, without wings or prickles. Calyx-scales 

 minutely spinous, nearly smooth. 

 Copse, Greatridge, Wilts. %. 8. H. creep., tuber. Cal.a little cottony. 



7. Cn. heterophyllus, Card. het. 10. 675. (Melancholy P.) Leaves 



clasping the stem, fringed ; undivided or pinnatifid ; very smooth 



