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JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



summit, 4 to 6 feet high ; leaves ovate-acuminate, stalked 

 opposite and decussate, and usually appressed ; stems smooth or 

 scabrous, green or purplish ; bracts of the involucre half as long 

 as the rays, linear- acuminate, margins ciliate; ray florets 1 to \\ 

 inch long, orange-yellow, acute ; disc yellow. (Diversifolkts and 

 hispidulus, Ell. ; butaris, Hort. Dickson ; tuberosus, black- 

 stalked, Dod; decapetalus niger, Hort. Barr.) Dry or moist soil, 

 Ohio to Wisconsin and south to Georgia and Texas. 



H. decapetalus, L. (fig. 9). — Bushy stems 4 to 6 feet high, 

 branched, smooth below, scabrous above ; upper leaves broadly 

 ovate-acuminate, lower much broader, opposite, stalked, thinnish, 

 glabrous above, scabrous beneath ; bracts of the involucre linear- 

 acute, sometimes foliaceous, ciliate ; ray florets 12 to 14 or more, 

 1 to H inch long, sulphur yellow ; the heads usually at right 

 angles with the stems; disc yellow. (Tuberosus, Dod; 

 decapetalus sulphureus, Barr. ; Bot. Mag., t. 3510. Banks of 

 streams and moist woods, Canada, Illinois, Georgia, &c. 



H. multiflorus, L. (fig. 10). — Stems 3 to 5 feet high; leaves 

 larger, firmer, and more ovate than in H. decapetalus, cordate, 

 stalked ; flowers rich yellow, 2 to 5 inches in diameter ; involucral 

 bracts lanceolate, foliaceous. Bot. Mag., t. 227. (Var. maximus, 

 a much taller form, with larger and finer flowers, and more 

 pointed rays ; multiflorus major, Hort. Var. fl. pi., 3 to 5 feet, 

 like the type, but with outer ray florets large, and the disc florets 

 ligulate, double ; multiflorus major pi., Paul. Var. Soleil d'Or, 

 in which the flowers are all quilled like an Aster. Var. Bouquet 

 d'Or.) 



H. tuberosus, L. — 3 to 14 feet high, stem stout, hispid; 

 leaves alternate, ovate, or subcordate- acuminate, serrated, scab- 

 rous on both sides, and usually stalked ; ray florets 12 to 20, 

 often 1 to 1 J inch long, yellow ; bracts of the involucre lanceo- 

 late, attenuate, acuminate, hirsute. Moist alluvial ground, 

 Upper Canada, Arkansas, and Georgia. 



Discussion. 



The Eev. C. Wolley Dod said that he quite agreed with Mr. 

 Dewar that the account given by botanists of the history of 

 Helianthus multiflorus is not quite satisfactory. The plant 

 exists in various forms, single and double, which are not con- 



