AKCTIUM. 197 



hemispherical and open in fr. glabrous (green), phyll. equalling 

 or exceeding fl. subulate inner row shorter than the others, sub- 

 cylindrical upper part of fl. more than \ as long as the lower part. 

 — Sy. E. B. 699. — St. 3 — i ft. high, centre and usually most of 

 the branches ending in corymbs. L. broadly cordate-ovate, 

 blunt ; petioles (solid) with prominent angles, deeply furrowed. 

 Heads very large, a few of the lower sometimes with short stalks. 

 Fl. -heads not umbUicate. Fr. yellowish, ultimately dark brown, 

 irregularly rugose. — A form with more spherical and webbed 

 heads (A. tomeittosum Bab.') is common near Cambridge and is 

 the Z. major v. subtomentosa Lange ! — Waste places. B. VIII. 



E. S. I. 



2. A. nemordsum (Lej.) ; heads racemose subsessile ovate and 

 contracted at the mouth in fr. slightly webbed, phyll. equalling 

 or exceeding the fl. subulate inner vow lanceolate shorter than 



•the others, subcylindrical upper part of fl. as long as the lower 

 part. — Sy. B. S. 701. A. intermedium Bab. — St. 2 — 4 feet high. 

 li. convolute, cordate, oblong-ovate, petioles hollow, rather 

 angular, nearly flat above. Heads all nearly sessile, less than in 

 Sp. 1, three usually placed close together at the end of each 

 branch, ovate-prolonged when young, not umbilicate. Most of 

 the phyll. ascending.— Local .? B. VIII. E. S. 



3. A^ minus (Sohk. ) ; heads racemose shortly stalked globular 

 slightly contracted at the mouth in fr. slightly webbed (greenish), 

 phyll. falling short of the Jl. subulate inner row equalling the 

 others and gradually subulate, subcylindrical upper part of fl. 

 about as long as the lower part. — Sy. E. B. 702. Fl. Dan. 2602. 

 R. XV. 811. — SmaEer than either of the preceding. Central st. 

 mostly nodding and as well as the branches having scattered 

 small heads ; term, head solitary. L. deeply cordate-prolonged ; 

 petioles hollow slightly angular, nearly round, scarcely fmrowed. 

 Fl. -heads not lunbilicate. Fr. fuscous with black blotches. — 

 Waste places. B. VIII. E. S. I. 



4. A. intermedium (Lange) ; lieads subracemose stalked hemi- 

 spherical and open ia fr. much webbed (gTeenish), phyll. equal- 

 liniy the fl. subulate inner row about equalling the others and 

 gradually subulate, subcylindrical upper part of fl. as long as 

 the lower part.— 5;/. E. B. 700. Fl. Dan. 2663. H. xv. 812. 

 A. pubens Bab. — St. about 3 feet high. L. deeply cordate-pro- 

 longed ; petioles (hollow) scarcely angular, slightly furrowed. 

 Stalks of the heads rather long, those of the lower heads longest. 

 Heads usually with much wool, twice as large as those of A. 

 minus. Fr. dark brown with a few paler spots towards the 

 top.— Waste places. B. MlH. E. I. 



' The true A. tomentosum is not a native of England. 



