AECTIUM. 217 



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

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

 Si/. E. B. 699. St. 34 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 umbilicate* Fr. yellowish, ultimately dark brown, 

 irregularly rugose. A form with more spherical and webbed 

 heads (A. foment osum Bab. x ) is common near Cambridge and is 

 the L. major v. subtomentosa Lange ! Waste places. B. VIII. 



E. S. I. 



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

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

 or exceeding the fl. subulate inner row lanceolate shorter than 

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

 part Si/. E. B. 701. A. intermedium Bab. St. 24 feet high. 

 L. 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 younpr, not umbilicate. Most of 

 the phyll ascending. Local? B. VlIT. ' E.S.I. 



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

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

 phyll. "falling short of the fl. 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. 2662. 

 R. xv. 811. Smaller 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 furrowed. 

 Fl. -heads not umbilicate. Fr. fuscous with black blotches. 

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



4. A. piibens (Bab.) ; heads subracemose stalked hemispherical 

 and open in fr. much webbed (greenish), phyll. equalling the 

 fl. subulate inner row about equalling the others and gradually 

 subulate, subcylindrical upper part of fl. as long as the lower 

 part, Sy. E. *B. 70'). Fl. Dan. 2663. R. xv. 812. A. inter- 

 medium (Lange) ed. viii. St. about 3 feet high. L. deeply 

 cordatt prolonged ; 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 



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



L 



