48 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Brickellia microphylla Gray, PI. Wright, i. 85 (1852) ; Bulbo- 

 stylis microphylla Nutt. Trans. Am. Phil. Soc. n. s. vii. 286 (1841). To 

 the synonymy of this species may be added B. ced/rosensis Greene, Bull. 

 Torr. Bot. Club, x. 86 (1883) ; Coleosanthiis cedrosensis Greene, Erythea, 

 i. 54 (1893). 



Brickellia oblongifolia Nutt. Trans. Am. Phil. Soc. n. s. vii. 286 

 (1841). Of this species, Coleosanthus hum'dis Greene, Pittonia, iv. 124 

 (1900), appears to be a synonym. 



Brickellia paniculata, n. comb. Eupatorium panlcidatum Mill. 

 Gard. Diet. ed. 8, no. 15 (1768). E. Verae-Crucis Steud. Nom. ed. 2, 

 i. 609 (1840). Ageratiim panlculatum Hort. and Eriopappus panlcu- 

 latus Hort. ex Steud. 1. c. Eupatorium rigidum Benth. PI. Hartw. 

 88 (1841), not Sw. Brickellia Hartwegi Gray, PI. Wright, i. 85 (1852). 

 Miller's Eupatorium paniculatum seems never to have been studied or 

 "accurately identified. It is evident that Steudel's renaming of the 

 species was purely a bibliographical change incident to his compilation, 

 and involving no personal examination of the plant. Miller's type, 

 collected at Vera Cruz, Mexico, by Dr. Houston, is still extant in the 

 herbarium of the British Museum of Natural History, and proves to 

 be the plant which has for some time been passing under the name of 

 Brickellia Hartwegi Gray. There seems no reason why Miller's name 

 should not be restored and transferred to the correct genus. Steudel's 

 purpose in renaming E. paniculatum Mill. (1768) was doubtless that he 

 might maintain the better known but much later homonym of Schrader 

 (1832), which, however, has since proved a synonym of ^. onicrostemon 

 Cass. Link, Enum. ii. 306 (1822), erroneously united under the name 

 E. paniculatum the very different plants of Miller and Schrader, be- 

 longing as we now see to two distinct genera. The unwarranted name 

 E. Verae-Crucis still persists in some botanical gardens. 



Cacalia asclepiadea L. f. Suppl. 352 (1781). Senecio (?) asclepiadeus 

 DC. Prod. vi. 422 (1837). This doubtful species from Colombia seems 

 never to have been studied or accurately placed. Fortunately the 

 type-specimen is still extant in the herbarium of the Linnean Society 

 of London. It proves to be identical with Eupatorium angustifolium 

 Spreng. Syst. iii. 415 (1826); Mikania angustifoUa HBK. Nov. Gen. 

 et Spec. iv. 138 (1820). Although the Linnaean specific name is older, 

 it cannot be applied in Eupatorium because of the existing homon}Tn, 

 E. asclepiadeum DC. Prod. v. 148 (1836). Cacalia asclepiadea h. f. 

 should therefore drop into the synonymy of Eupatorium angusti- 

 folium (HBK.) Spreng. and the genus Cacalia (or Senecio) may thus be 

 freed from a dubious species. 



