text:  The summit of Mount Elbert is an alpine environment , featuring plants such as <unk> sericea ( sky @-@ pilot ) , <unk> grandiflora ( old @-@ man @-@ of @-@ the @-@ mountain ) , and <unk> rossii ( alpine avens ) . Also noted are Carex <unk> var. <unk> , Salix <unk> , Platanthera <unk> , <unk> <unk> , Aquilegia canadensis , Chenopodium album , Gentiana <unk> var. <unk> , and <unk> <unk> . Below treeline the mountain is heavily forested , with the lower slopes covered with a mixture of lodgepole pine , spruce , aspen and fir . 
  