192 AMERICAN MIDLAND NATURALIST 



they are almost flat-topped cymosely terminal. Moreover, our 

 American plants have two kinds of flowers; the earliest and 

 lowest are almost devoid of corolla, clcistogamous and with smaller 

 and fewer calyx teeth. The capsule in the type is short cylindric 

 or obconic. 



Triodanis Raf. 1. c. 



Specularia (Heister) Fabr.^ or Legouzia Durand^ segregate. 



Triodanis perfoliata (Ijnn.) Nwd. 



Triodanis rupcsiris (Linn.) Raf. 1. c. 



Triodallus rnpestris (Linn.) DC. Prod. VIL, p. 491, (1839). 



Specidaria perfoliata (Linn.) A. DC. Mon. Campan. p. 351, 

 (1830). 



Legouzia perfoliata (Linn.) Britton. Mem. Torr. Bot. CI. 

 v., p. 309, (1894). 



Cavipamda perfoliata Linn. vSp. PI. p. 169, (1753). 



Triodanis biflora (R. and P.) Nwd. 



Campamda biflora (R. and P.) Fl. Per. 2, p. 55, pi. 200, (1799). 

 Specularia biflora (R. and P.) F. and M. Ind., Sem. Hort. 

 Petrop. L, p. 17, (1835). 



Triodanis leptocarpa (Nutt.) Nwd. 



Specularia leptocarpa (Nutt.) A. Gray. Proc. Am. Acad. IL, 

 p. 82, (1876). 



Mesadenia Raf. a Synonym. 



The name Mesadenia^ as applied to the composite plants 

 segregates of Cacalia Linn, is inapplicable because the name 

 was used by Rafinesque several years earlier in attempt to displace 

 Walter's name Frasera of the Gentianaceae.' Concerning the status 

 of the well recognized genus of Compo'sitae, Dr. Greene has not only 

 discussed fully its merits, but also thrown light on the somewhat 

 confused condition of the nomenclature.^ De Candolle's first 

 attempt at segregation was done as a section or subgenus under 



6 (Heister, L.) Kalricius, P. K. Enum. PI. Hort. H.lmst. p. 225, (1763). 



7 Durandc, J. Fr., Fl. Bourg. 2, p. 26, (1782). 



1 Rafinesque, C. S., Loudon's Gard. Mag. 8, p. 247. (1832), also Rafin- 

 esque ,C. S., New Fl. IV., p. 78, (1836). 



2 Rafinesque, C. S., Med. I'l. I., p. 198. {1828). 



3 Greene, E. L., Pittonia, III., p. 180-183, (1897).. 



