280 
that my surmise that they do not elongate was erroneous. These 
fruits are narrower and much more lanceolate in outline than those 
of Professor Porter's specimen from Millersville, Pa., and many of 
them are slender-pedicelled. 
GNnaPHALIUM HELLERI, n. sp. G. polycephalum, var. 8., T. and G. 
Fl. N. A. ii. 
Similar to G. obtusifolium, L. and G. decurrens, lves, corymbosely 
or somewhat paniculately branched above, 1 14°-2° high, the stem 
and branches densely glandular-pubescent, not tomentose. Leaves 
oblong-lanceolate, sessile, acuminate at both ends, green and his- 
pidulous above, white-tomentose beneath, the larger about 5 cm. 
long and 1 cm. wide, the uppermost much smaller and narrower; 
heads very numerous, corymbose or corymbose-paniculate, sessile 
or nearly so in the clusters, about 2%’ broad; involucre oblong 
or becoming campanulate, 6 mm. high, its bracts bright white, to- 
mentose, the outer oblong, the inner linear-oblong, all obtuse; pap- 
pus bristles distinct to the base, separately deciduous; achenes 
glabrous. 
In fields, Southeastern Virginia (Heller) to Georgia (Boykin). 
_ The Genus Coreopsis, L. The close affinity of Coreopsis to 
Bidens has repeatedly been commented upon by modern authors, 
and it has been more than once maintained that the two should be 
regarded as congeneric. The principal diagnostic character which 
has been taken as separating them is the downwardly barbed 
pappus-awns of Bidens, the species with awned pappus which have 
been admitted into Coreopsis, having the awns upwardly barbed. 
This character has been found to completely fail in the case of 
Bidens frondosa, L., which, as it occurs along the Lower Delaware 
River in Pennsylvania, New Jersey and Delaware, has the awns 
either upwardly or downwardly barbed, and I have observed down- 
wardly barbed awns in Coreopsis discoidea. 
It is also stated by Dr. Gray that some of the species included _ 
by him in the Synoptical Flora in Coreopsis hybridize with Bidens 
Frondosa. 
For all this, it is my opinion that the genus Coreopsis should 
be maintained for the original types C. verticillata, C. tripterts, C. é 
auriculata, C. lanceolata and their allies, which have a pappus of gee 
two short usually unbarbed teeth, a coroniform border or 0, and 
that those which have a pappus of awns upwardly or downwardly © 
barbed should be referred to Bidens. The last six species of 
