396 PROCEEDINGS OF THE AMERICAN ACADEMY. 



readily distinguished by its less unequal, more nearly entire leaves, 

 smaller, thicker-walled vescicles, and especially by its sessile flowers. 



Cynoctonum oldenlandioides (Wall), n. comb. Mitreola olden- 

 landioides Wall. Cat. no. 4350 (1828), without description ; G. Don, 

 Syst. iv. 172 (1837), where distinctions are slightly indicated ; A. DC. 

 Prod. ix. 9 (1845), where described and distinguished chiefly by the 

 widely divergent lobes of the fruit; Hook. Ic. t. 827 (1852), where 

 admirably figured. The change from Mitreola to Cynoctonum becomes 

 necessary under the Vienna Rules, though it is certainly to be re- 

 gretted that the well established Mitreola was not included in the list 

 of nomina conservanda. 



Cynoctonum paniculatum (Wall.), n. comb. Mitreola paniculata 

 Wall. Cat. no. 4349 (1828), without description; G. Don, Syst. iv. 

 171 (1837); A.DC. Prod. ix. 9 (1845); Progel in Mart. Fl. Bras. vi. 

 pt. 1, 266, t. 71 (1868). 



Cynoctonum pedicellatum (Benth.), n. comb. Mitreola pedicel- 

 lata Benth. Jour. Linn. Soc. i. 91 (1857). 



Centaurium Beyrichii (Torr. & Gray), n. comb. Erythraea tri- 

 chantha /3 angustifolia Griseb. in DC. Prod. ix. 60 (1845). E. Beyrichii 

 Torr. & Gray ex Torr. in Marcy, Expl. Red Riv. 291 (1853). 



Centaurium cachanlahuen (Molina), n. comb. Gentiana Cachan- 

 lahuen Molina, Sagg. Chil. 147 (1782) ; also in the German edition 

 by Brandis, 310 (1786). G. peruviana Lam. Encycl. ii. 642 (1786). 

 Chironia chilenxis Willd. Sp. PI. i. 1067 (1798). Erythraea chili //sis 

 Pers. Syn. i. 283 (1805). E. Cachanlahuan Roem. & Schultes, Syst. 

 iv. 167 (1819). 



Centaurium calycosum(Buc1v1.) Fernald, var nana (Gray), n. comb. 

 Erythraea calycosa, var. nana Gray, Syn. Fl. ii. pt. 1, 113 (1878). 



Centaurium floribundum (Benth.), n. comb. Erythraea for ibunda 

 Benth. PL Hartw. 322 (1849). 



Centaurium macranthum (Hook. & Arm), n. comb. Erythraea 

 tnacrantha Hook. & Am. Bot. Beech. 438 (1841). E. mexicana 

 Griseb. ex Hook. & Am. 1. c. 302, 438. Gyrandra chironioides 

 Griseb. in DC. Prod. ix. 44 (1845). Erythraea chironioides Torr. 

 Bot. Mex. Bound. 156 (1859), in part. 



Centaurium madrense (Hemsl.), n. comb. Erythraea madrensis 

 Hemsl. Biol. Cent.-Am. Bot. ii. 346 (1882). Gyrandra chironioides 

 Griseb. in Seem. Bot. Herald. 318 (1856), not Griseb. in DC. Prod. ix. 

 44 (1845). 



Centaurium micranthum (Greenm.), n. comb. Erythraea mi- 

 crantha Greenm. Proc. Am. Acad, xxxix. 83 (1903). 



Centaurium multicaule, n. sp., verisimiliter bienne multicaule 



