D. octoretala: stems short, much branched, prostrate or creeping, forming dense spreading tufts; leaves crowded, oblong, deeply and regularly crenate, shining green above, white and downy beneath; peduncles erect, 2-3 inches long, with rather large white solitary flowers; awn of the carpels above an inch long, feathery. - Limestone mountain districts. Fl. July, August.