Compositae. 91 



389 Heads over i in, diameter, corymbs lax, . . , S. aquaticus. 

 389 Heads under i in. diameter, corymbs dense, 390 



390 Stem and leaves glabrous, 391 



390 Stem cottony, leaves downy beneath, . . S. eruccefolius. 



391 Stem 8 — 12 in. high, S. squalidus. 



391 Stem 1—4 ft. high, S. Jacobaea. 



SENE'CIO VULGA'RIS (112). Common Groundsel, i— 12. Heads 



(781) few drooping ^ in. long, leaves pinnatifid irregularly toothed. Waste 

 places. 



SENE'CIO SYLVAT'ICUS (104). Mountain Groundsel. 7—9. 



(782) Slightly viscid, heads many spreading, leaves like those of S. vulgaris 

 but more deeply cut. Dry banks and pastures. 



Sene'cio visco'sus (28). Stinking Groundsel. 7 — 9. Heads few erect, 



(783) leaves broad pinnatifid with viscid hairs, plant with a disagreeable 

 smell more powerful than that of S. sylvaticus. [G. {Settle.) 



SENE'CIO ERUC^FO'LIUS (67). Hoary Ragwort. 7-8. Stem 



(785) I — 4 ft. high stout downy, heads large in a dense cor^-mb, leaves 

 broad pinnatifid — downy beneath. Roadsides and banks. 



SENE'CIO JACOB^'A (112). Ragwort. 7—8. Stem 1—4 ft. high 



(786) stout glabrous, heads \ — I in. diameter in a dense corymb, leaves 

 pinnatifid glabrous. Waysides. Fig. p. 90. 



SENE'CIO AQUAT'ICUS (no). IMarsh Ragwort. 7-8. Resem- 



(787) bling S. Jacobaea but with larger heads of flowers in a very lax corymb 

 and leaves with longer petioles, radical leaves often entire. Wet places. 



SENE'CIO SARACEN'ICUS. Broad-leaved Ragwort. 6—7. Stem 3-5 



(788) ft. high erect stout leafy, leaves 5 — 8 in. long lanceolate glabrous irregu- 

 larly serrate. [G. (In^leton.) 



X XVIII. —ANTHEMIS. 



Leaves alternate bi-pinnatifid, flower-heads solitary, florets of ray yellow 

 or white ligulate, those of disk tubular yellow, pappus o or a minute border 

 only. 



Plant glabrous, . . .A. Cotula. 



Plant downy, 392 



392 Procumbent or creeping, A. nobilis. 



392 Erect or branching, A. arvensis. 



ANTHE'MIS COT'ULA (72). Stinking May-weed. 6—9. Stem 

 (762) 8 — 18 in. erect branched, ray florets white with no style, receptacle 

 convex, scales acute. Fields and waste places. 



