62 THE AMERICAN MIDLAND NATURALIST 



RESINOCAULON (Gr. p^rivr; resin, yjav^og stem) Lunell, 

 gen. nov. 



Silphium Diosc., Plin. = Laser pitium. Ruel. de Diose. Ill: 264. 

 (1547) under Laserpitium says: " Caulem aliqui silphion. . . 

 vocavere." Plinius, Hist. (1532) page 349, line 5: "Ab his proxi- 

 mum dicetur auetoritate clarissimum laserpitium, quod Graeci 

 silphion voeant, in Cyrenaica provincia repertum." — Bubani, Fl. 

 Pyr. II: 398, line 23: " Silphium L. euilibet eurae commendamus." 

 — Silphium Linn. Gen. (1737). Hort. Cliff. (1737). 



Asteriscus Tour. Elem. 308. (1694), Dill. Hort. Elth. 42.. 

 (1732), not Asteriscon Dod. Herb. 474. (1618). = Aster atticus Fuchs. 



1 135. Resinocaulon perfoliatum (Linn.) Lunell. 

 Silphium perfoliatum Linn. Sp. PI. ed. 2., 1301. (1763). 

 Fargo (O. A. Stevens). 



HELIOPSIS Pers. Syn. 2: 473. (1807). 



1 136. Heliopsis scabra Dunal, Mem. Mus. Paris, 5: 56, 

 pi 4. (1819). 



Devils Lake, Turtle Mountains, Leeds. 



OBELISCOTHECA Vail. Act. 426. (1720). A name, not very 

 beautiful, almost sesquipedalian ! 



Rudbeckia Linn. Gen. no. 980, antedated by Houston, Mss. 

 who used it for Conocarpus. 



1 137. Obeliscotheca flava (Moore) Nwd. & LH. 

 Rudbeckia flava Moore, in Greene Pittonia 4: 179. (1900). 

 Leeds, Butte, Pleasant Lake, Turtle Mountains. 



1 138. Obeliscotheca flava perbracteata (Lunell) Nwd. & Lll 

 Rudbeckia flava perbracteata Lunell in Am. Mid. Nat. Vol. II: 



157. (1912). 



Leeds, Butte. 



1 139. Obeliscotheca ampla (A. Nels.) Nwd. & Lll. 

 Rudbeckia ampla A. Nels. in Bull. Torr. Bot. Club 28: 234. 



(1901). 



Turtle Mountains, Pleasant Lake. 



RATIBIDA Raf. Am. Month. Mag. 2: 268. (1818). 



1 1 40. Ratibida columnifera (Nutt.) Woot. & Standi. F). New 

 Mexico. 706. (1915.) 



Rudbeckia columnifera Nutt. Fraser's Cat. 75. (1813). 

 Rudbeckia columnar is Pursh, Fl. Am. Sept. 575. (1814). 

 Leeds. 



