304 BOTANICAL GAZETTE [APRIL 
lanceolatis, subglabris. Ligulae circiter 6 aut 7, flavae, nigro- 
striatae nonnullis lineis, 5-8 mm. longae. Paleae lineares, striatae, 
marginibus diaphanis. Achaenia linearia, biaristata aristis re- 
trorsum hamosis, circiter 1 cm. longa. 
Karsten, Bogota, Columbia (type in Herb. Mus. Hist. Nat. Paris). 
This species appears very unique, being distinct in general aspect from 
any other species known to me. The type sheet, originally in ScuuLtz BI- 
PONTINUS’ own herbarium, bears several small specimens. These are re- 
markably uniform and are allied most nearly with Bidens rubifolia H. B. K., 
the leaves of which are much less diminutive. The label bearing the specific 
name here set forth has also the date Dec. 18, 1856, which, from its position on 
the label, may be that of the determination rather than the collection. While 
true Bidens rubifolia grows at Bogota (e.g., J. F. Holton 365, Oct. 28, 1852), 
Karsten and Scauttz Breontinus evidently regarded the Karsten plant 
specifically distinct. This course I also must adopt, as I am unable to connect 
the two forms in herbaria by any intermediate forms. 
BIDENS oDoRATA Cav. Icon. et Descript. Plant 1:9. pl. 13. 1791; 
Coreopsis ferulaefolia Jacq. var. odoratissima Pers. Synops. Plant. 
2:477. 1807; Bidens ferulaefolia DC. var. odoratissima DC. 
Prodr. 5:603. 1836.—For many years, PERSOON’s variety odora- 
tissima of Coreopsis ferulaefolia seems to have been unfamiliar to 
botanists. DECANDOLLE (/.c.) merely mentioned it: “quid sit 
var. odoratissima & Persoonio citata ignoro.”’ PERsoON’s variety 
was founded on Cavanitzzs’ plant in Jussrev’s herbarium and 
was said to be native to Peru. This cited specimen I have not 
found, but there exists in the British Museum a good specimen 
from CAVANILLES, labeled ‘‘Coreop|s]is odoratissima nobis, Mexico,” 
which matches Prrsoon’s description precisely. The leaves, 
probably because of having grown uhder cultivation, are especially 
slender-divided and give a superficial resemblance to those 0 
- Bidens ferulaefolia (Jacq.) DC. The specimen is identical with 
two other specimens (in Herb. Brit. Mus.) from the herbarium 
of CAVANILLES, one labeled “Coreopsis odorata olim Bidens,” and 
the other “Bidens odorata Cav. Ic. V. 1, nunc Coreopsis.” Both 
of these last two are further labeled, in pencil, ‘Cosmos odoratus.” 
A study of other mature specimens of Bidens odorata shows 
that it is a Mexican species primarily (if not indeed exclusively), 
and is not at all a Coreopsis, but rather a true Bidens, althoug 
