176 
places: Juncus balticus montanus, Rumex acetosella, Rumex occi- 
dentalis, Rumex crispus, Rumex salicifolius, Anchusa officinalis, 
Prunella vulgaris, Iva xanthifolia and Festuca rubra. 
The altitudinal limits of the plants listed are given by Rydberg* 
às 4,000 to 13,000 feet. Some plants are found above their 
hitherto reported range as: Festuca rubra, Bromus tectorum, 
Elymus canadensis, Rumex crispus, Chenopodium oblongifolium, 
Melilotus oficinalis, Iva xanthifolia, these all being reported by 
Rydberg as reaching altitudes of 7,000 feet or less. 
Sixty-four plants are listed below; of these sixteen belong to 
Poaceae, six to Polygonaceae and thirteen to Compositae. Forty- 
two plants of the list are native to North America. Some, how- 
ever, have been introduced into Boulder Park from lower altitudes 
and probably do not produce seeds there. Twenty-one are 
introduced from Europe, Asia or Tropical America. Plantago 
major (common plantain) is cosmopolitan but, of course, intro- 
duced at this altitude from lower stations. 
POACEAE 
Phleum pratense L. Common Timothy. 
Europe. 
Trisetum majus (Vasey) Rydb. Larger False Oats. 
Native. 
Koeleria cristata (L.) Pers. Prairie-grass. 
Native. 
Dactylis glomerata L. Common Orchard Grass. 
Europe. 
Poa pratensis L. Kentucky Blue-grass. 
Europe; Asia; North America. 
Poa compressa L. English Blue-grass. 
Europe and Asia. Introduced to North America. 
Poa serotina Ehr. 
Native. 
Festuca rubra L. Red Fescue. 
Europe, Asia. 
Bromus pumpellianus Scribn. Pumpelly’s Brome. 
Native. 
* Rydberg, Flora of Colorado, 1906. 
