TWO VERBESINAS 57 
capitulis cymoso-paniculatis in pedunculis axillaribus et termin- 
alibus 5-15-cephalis folia paullo superantibus; pedunculis et 
pediculis (6-18 mm. longis) dense sordide pilosis + glandulosis ; 
isco frugifero 6-5-7-5 mm. alto 9-11 mm. dimetente; involucri 
longis; acheniis radii triangularibus non alatis pubescentibus 
gequalibus vel inequalibus 2-3 mm. longis.—CotumBIA : 1842-3, 
Linden 1335 (types in Brit. Mus. and Kew Herb.).—Not very 
closely related to any described species. 
VERBESINA ARBORESCENS (Mill.) n. comb.—Silphium arbor- 
escens Mill. Gardn. Dict. ed. 8 no. 4 (1768). Verbesina olivacea 
Klatt, Leopoldina xx. 93 (1884). Otopappus olivaceus Klatt, 
Ann. Naturh. Hofmus. Wien, ix. 362 (1894). For further 
Synonymy see Robinson and Greenman, Proc. Am. Acad. xxxiy. 
557 (1899). 
_The type specimens of Miller’s Silphium arborescens in the 
British Museum, collected in Vera Cruz by Houstoun in 1731, 
prove to be identical with Verbesina olivacea Klatt, described 
from material in the Berlin Herbarium collected by Schiede 
(number 340) at Hacienda de la Laguna, Vera Cruz. Klatt’s 
short description may be amplified by the following drawn from 
the Houstoun specimens. 
vinegar erect, “10 or 1 
rs, 
subappressed grayish hairs, the veins (about eleven pairs) almos 
tomentulose, 8:5-11-5 em. long, 3:3-4:3 em. wide, gradually nar- 
towed into unmargined petioles 5°5-6°5 mm. long; peduncles 
subtomentulose, + glabrate in age, 3°2-8°5 em. long; involucre 
triseriate, slightly graduated, 6-7°5 
igh; (rays yellow, oblong, about 18, 5-6 mm. long, 1:3 mm. 
Wide [Purpus « =2179” ; (disk flowers numerous, yellow, with a 
few loose hairs below, 4 mm. long (the slender tube 1:1 mm. long) ; 
Pales scarious, thin, pointed, with a narrow green keel, the apex 
minutely erose and puberulent, 8 mm. long; disk-achenes very 
_ Journan or Borany.—Vor. 53. [Fepruary, 1915.) 
