34 
PLANTS OF YELLOWSTONE NATIONAL PARK 
between 2 and 6 feet tall but sometimes still taller, and the heads 
resemble those of cultivated rye. In addition to the wild-rye the 
following species of grasses have been reported in the park: 
Agropyron dasystachyum 
Agropyron paucvftorum 
Agropyron pseudorepens 
Agropyron saxicola 
Agropyron scribneri 
Agropyron smithii 
Agropyron spicatum 
Agropyron subsecundum 
Agropyron subsecundum var. andinum 
Agrostis alba 
Agrostis bakeri 
Agrostis exarata 
Agrostis exarata var. ampla 
Agrostis hiemalis 
Agrostis hiemalis var. geminata 
Agrostis humilis 
Agrostis idahoensis 
Agrostis rossae 
Agrostis tliurberiana 
Alopecurus aequalis 
Alopecurus alpinus 
Andropogon hallii 
Arena fatua 
Beckmannia sysigachne 
Bromus anomalus 
Bromus ciliatus 
Bromus marginatus 
Bromus pumpellianus 
Bromus pumpellianus var. tweedyi 
Bromus tectorum 
Calamagrostis canadensis 
Calamagrostis canadensis var. macou- 
niana 
Calamagrostis inexpansa 
Calamagrostis neglecta 
Calamagrostis purpurascens 
Calamagrostis rubescens 
Calamagrostis scribneri 
Catabrosa aquatica 
Cinna latifolia 
Danthonia californica var. americana 
Danthonia intermedia 
Danthonia parryi 
Danthonia spicata 
Danthonia unispicata 
Deschampsia caespitosa 
Deschampsia elongata 
Distichlis stricta 
Elymus canadensis 
Elymus condensatus 
Elymus glaucus 
Elymus macounii 
Festuca idahoensis 
Festuca kingii 
Festuca occidentals 
Festuca ovina 
Festuca ovina var. brachyphylla 
Festuca rubra 
Glyceria borealis 
Glyceria elata 
Glyceria grandis 
Glyceria pauciflora 
Glyceria striata 
Hierochloe odorata 
Hordeum jubatum 
Ilordeum jubatum var. caespitosum 
Hordeum nodosum 
Koeleria cristata 
Lolium perenne 
Melica bulbosa 
Melica geyeri 
Melica spectabilis 
Melica subulata 
Muhlenbergia andina 
Muhlenbergia asperifolia 
Muhlenbergia cuspidata 
Muhlenbergia filiformis 
Muhlenbergia squamosa 
Orysopsis asperifolia 
Orysopsis exigua 
Orysopsis hymenoides 
Panicum capillare var. occidentale 
Panicum thermale 
Phalaris arundinacea 
Phalaris canariensis 
Phleum alpinum 
Phleum pratense 
Poa alpina 
Poa ampla 
Poa arctioa 
Poa arida 
Poa canbyi 
Poa compressa 
Poa cusickii 
Poa epilis 
Poa fendleriana 
Poa gracillima 
Poa interior 
Poa leptocoma 
Poa longiligula 
