48 PROCEEDINGS OF THE AMERICAN ACADEMY. 
BRICKELLIA MICROPHYLLA Gray, Pl. Wright. i. 85 (1852); Budbo- 
stylis microphylla Nutt. Trans. Am. Phil. Soe. n. s. vii. 286 (1841). To 
the synonymy of this species may be added B. cedrosensis Greene, Bull. 
Torr. Bot. Club, x. 86 (1883) ; Coleosanthus cedrosensis Greene, Erythea, 
i. 54 (1893). 
BRICKELLIA OBLONGIFOLIA Nutt. Trans. Am. Phil. Soe. n. s. vii. 286 
(1841). Of this species, Coleosanthus humilis Greene, Pittonia, iv. 124 
(1900), appears to be a synonym. 
Brickellia paniculata, n. comb. Hupatorium paniculatum Mill. 
Gard. Dict. ed. 8, no. 15 (1768). #. Verae-Crucis Steud. Nom. ed. 2, 
i. 609 (1840). Ageratum paniculatum Hort. and Eriopappus panicu- 
Jatus Hort. ex Steud. 1c. Hupatorium rigidum Benth. Pl. Hartw. 
88 (1841), not Sw. Brickellia Hartwegi Gray, Pl. Wright. i. 85 (1852). 
Miller’s Hupatoriwm 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. paniculatwm 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 /. microstemon 
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 1. f. Suppl. 352 (1781). Senecio (2) 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 Hupatorium angustifolium — 
Spreng. Syst. iii. 415 (1826); Mikania angustifolia HBK. Nov. Gen. — 
et Spec. iv. 138 (1820). Although the Linnaean specific name is older, _ 
it cannot be applied in Hupatorium because of the existing homonym, — 
__ E. asclepiadeum DC. Prod. y. 148 (1836). Cacalia asclepiadea Ut 
_ should therefore drop into the synonymy of EvpatoRtum ANGUSTI- 
ues Fotium (HBK.) Spreng. and the genus Cacalia (or Senecio) may thus be — 
freed from a dubious species. — 
