An Assessment of Exotic Plant Species of Rocky Mountain National Park

Table 2 - Summary of Screening Assessment Results

Species Name	Origin (1=non-native N. America) (2=native N. America, non-native to RMNP) (3=not know native RMNP)	Current Distribution (1=few, scattered) (2=intermed., patchy) (3=many, dense)	Potential Distribution (15 possible)	Potential Impact (40 possible)
*Agropyron cristatum*	1	3	6	19
*Agropyron intermedium*	1	3	6	23
*Agropyron repens*	1	2	6	33*
*Agrostis stolonifera*	1	3	8	22
*Alopecuris pratensis*	1	2	6	19
*Alyssum alyssoides*	1	--	6	16
*Amaranthus retroflexus*	1,2	--	9	19
*Ambrosia tomentosa*	3	2	6	21
*Amsinckia menziesii*	3	--	6	14
*Arabis glabra*	3	2	6	17
*Asparagus officinalis*	1	2	4	14
*Barbarea vulgaris*	1	1	6	18
*Berteroa incana*	1	1	9	20
*Bromus inermis*	1	3	6	33*
*Bromus japonicus*	1	--	9	17
*Bromus tectorum*	1	3	13	25*
*Camelina microcarpa*	1	--	6	16
*Capsella bursa-pastoris*	1	2	9	17
*Carduus nutans*	1	3	9	26*
*Carum carvi*	1	--	9	17
*Centaurea diffusa*	1	2	11	33*
*Centaurae maculosa*	1	2	11	26*
*Cerastium vulgatum*	1	--	11	18
*Chenopodium album*	1	2	9	19
*Chenopodium capitum*	3	--	9	16
*Chenopodium glaucum*	1	--	9	19
*Cirsium arvense*	1	3	11	31*
*Cirsium vulgare*	1	3	11	26*
*Conium maculatum*	1	3	9	17
*Convolvulus arvensis*	1	2	6	26*
*Conyza canadensis*	3	--	9	20
*Conyza schiedeana*	3	--	6	14
*Chrysanthemum leucanthemem*	1	3	9	29*
*Cynoglossum officinale*	1	2	11	20
*Dactylis glomerata*	1	3	6	29*
*Descurainia sophia*	1	3	9	18
*Draba nemorosa*	3	--	6	14
*Dianthus armeria*	1	--	9	20
*Erodium cicutarium*	1	--	6	17
*Erysimum cheiranthoides*	1,2	--	6	16
*Euphorbia esula*	1	3	11	38*
*Euphorbia serpyllifolia*	3	--	6	19
*Festuca ovina*	1	3	9	21
*Festuca pratensis*	1	2	6	21
*Gypsophilia paniculata*	1	--	9	26*
*Hieracium aurantiacum*	1	2	6	20
*Hypericum perforatum*	1	1	13	38*
*Iva xanthifolia*	3	--	6	14
*Lactuca serriola*	1	2	6	16
*Lappula redowskii*	3	--	9	19
*Linaria dalmatica*	1	3	9	31*
*Linaria vulgaris*	1	3	11	27*
*Lepidium campestre*	1	3	6	14
*Lepidium densiflorum*	1,2	--	9	17
*Lepidium perfoliatum*	1	--	6	17
*Lolium perenne*	1	2	6	20
*Lychnis alba*	1	--	11	22
*Lythrum salicaria*	1	1	11	31*
*Madia glomerata*	3	--	6	16
*Matricaria matricaroides*	3	3	9	19
*Matricaria perforata*	1,2	--	9	17
*Medicago lupulina*	1	--	9	20
*Melilotus alba*	1	3	9	24*
*Melilotus officinalis*	1	3	9	24*
*Mentha spicata*	1	--	6	9
*Onobrychis viciaefolia*	1	--	7	15
*Phalaris arundinaceae*	2	--	9	36*
*Phleum pratense*	1	3	8	15
*Plantago major*	1,2	2	9	22
*Poa annua*	1,2	--	11	17
*Poa bulbosa*	1	2	6	15
*Poa compressa*	1	3	6	15
*Poa pratensis*	1,2	3	11	27*
*Polygonum arenastrum*	3	--	6	17
*Polygonum convolvulus*	1	--	6	22
*Potentilla norvegica*	1	2	6	16
*Psathyrostachys juncea*	1	--	6	18
*Rheum rhubarbarum*	1	2	4	10
*Rumex acetosella*	1	--	9	22
*Rumex crispis*	1	3	9	23
*Salsola collina*	3	--	9	16
*Salsola iberica*	1	2	11	19
*Sisymbrium altissimum*	1	--	11	17
*Sisymbrium officinale*	1	--	6	16
*Solanum triflorum*	3	--	6	15
*Sonchus arvensis*	1	3	9	27*
*Spergularia rubra*	1	--	6	13
*Taraxacum officinale*	1,2	3	13	21
*Thlapsi arvense*	1	--	9	17
*Tragopogon dubius*	1	2	6	12
*Trifolium hybridum*	1	3	6	15
*Trifolium pratense*	1	3	6	15
*Trifolium repens*	1,2	3	6	21
*Triticum aestivum*	1	2	6	13
*Triticum sp.*	1	2	0	0
*Verbascum thaspus*	1	3	9	14
*Verbena bracteata*	3	--	6	11
*Verbesina enceloides*	3	--	6	12

* Species of concern

Note: Species given two scores for Origin category are identified as non-native and native species of North America by different sources.

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