Also on the summit are twisted-arm draba and James 'snowlover, two of the 15 alpine species identified as "rare" in the must-have book for amateur botanists, Rare Plants of Colorado.    From Wordnik.com.  [Aspen Times - Top Stories] Reference

But tucked in amongst the rocky ledges and crevices was a rich variety of flowers, including two rare, strictly-alpine species, arctic draba and Lyall's rockress, that until now had eluded me.    From Wordnik.com.  [Aspen Times - Top Stories] Reference