(to be described in a succeeding paper; Mem. N. Y. Bot. Gard. 9:000).
This is perhaps the most remarkable presumptive derivative of Stenopadus. As in Stomatochaeta, the leaves are thickly coriaceous, the receptacle epaleaceous except for a few marginal members which may represent merely inner reduced phyllaries, and the corolla more "advanced" with short, thin 5-nerved tube and stiff, erect lobes. In Chimantaea the corolla lobes are densely barbate the achenes more often pubescent, and the nectar-gland at the summit of the achene external to the style base is prominent and deeply 5-lobed (in other members of the Guayana gochnatinias cylindric or prismatic). In habit, members of the genus are conspicuously specialized, having become subsucculent, depressed and little branched, or completely unbranched and in aspect more like a bromeliad or espeletia than any of its congeners. Indeed, Chimantaea seems in this respect well on the way to the development of the herbaceous habit. The genus, except for C. cinerea (on nearby Auyan-tepuf) is restricted to the Chimanta Massif.