14 Flora of Denver. 



ers clustered near the top, yellowish-white, lower leaves with 

 long petioles. Along the Platte. Rare. Summer. 



103. Potentilla Norvegica L. Stems tall and weak, hairy, 

 leaflets three, cut toothed, calyx larger than yellow corolla. 

 Along the Platte. Summer. 



104. Potentilla rivaiis NUTT. Similar but not so tall and 

 more slender, leaflets usually five, flowers smaller and more 

 numerous. Along the Platte. Summer. 



105. Potentilla Pennsylvanica L. var. strigosa PURSH. 

 Stems erect, leaves close to the stem, pinnate leaflets divided 

 into linear divisions with revolute margins. Flowers clustered 

 at top of stems. Near the Platte in South Denver. Summer. 



106. Potentilla gracilis DOUGL. Branching from the base, 

 tall. Root leaves with long petioles and about seven palmate 

 leaflets, very white on the under surfaces, flower branches 

 spreading. Perrin's meadow. North Denver. 



107. Potentilla fruticosa L. (SHRUBBY POTENTILLA.) 

 This was reported from near Denver by B. H. Smith in "Flora 

 of Colorado." I think I saw it many years ago in North Den- 

 ver but have not seen it since. 



108. Potentilla Anserfna L. (SILVER-WEED.) Spreading 

 by runners, leaves silky and white. Common in wet places. 

 Spring and Summer. 



109. Rosa blanda AIT. The common wild rose.' Along 

 the Platte and Cherry Creek. 



no. RosaSayi. This has been found by Miss . Eaton 

 along Clear Creek near Berkeley. 



SAXIFRAGACEvC. (Saxifrage Family.) 



in. Saxifraga nivalis L. Very rare along the Platte near 

 Valverde. 



