STUDIES IN THE COMPOSIT.E. 218 
two groups; those of Conocliniwm being singularly acumin- 
ate, and also of a firmness that does not recur in the other 
group. And there is an excellent character of the pappus 
which, in so far as I can find, has been overlooked by 
everybody, even by De Candolle. The members of the 
pappus are not capillary. They are distinctly, though 
slightly and very gradually dilated at base, and also much 
firmer and more awn-like than in Eupatorium. This pecu- 
liarity of the pappus, as well as the whole aspect and char- 
acter of the involucre, and the general habit of all the 
species, forces upon us the conviction that we have here an 
assemblage of species much more nearly akin to Ageratum 
than to any phase whatsoever of Eupatorium. 
The following species proposed as new are all from the far 
South and Southwest: 
C. vENULOSUM. Evidently very tall, the longer floriferous 
branches almost a yard long, the main stem suffrutescent, 
the internodes of both stem and branches 4 to 6 inches long, 
terete, sparsely puberulent under a lens, but to the unaided 
eye appearing glabrous; leaves thin, 2 to 3 or 4 inches 
long including the short petiole, ovate to lanceolate-trigo- 
nous, truncate and subhastate at base, hardly acute at apex, 
rather closely crenate-serrate, deep green and scaberulous 
above, pale and white-veiny beneath, all the veins and 
veinlets hairy with divaricately spreading hairs: heads in 
1 to 3 peduncled compound cymes at the ends of all the 
branches: flowers apparently rose-purple, achenes with a 
few resin-globules at summit: pappus very fine, but the 
bristles thicker at base. 
Species very well marked by its large size and peculiarly 
elongated very veiny foliage, resembling that of some 
Stachys. I have it only in Tracy’s n. 4,734 from Biloxi, 
