72 
IOWA ACADEMY OF SCIENCE Vor,. XXVII, 1920 
Solidago scopulorum (Gray) Nels. {S. corymbosa Nutt.; S. multira- 
diata scopulorum Gray) Milner Pass, 11,700 feet; Mount Byers; Lookout 
Mountain. 
S. nana Nutt. Mount Byers, 10,500 feet; Lookout Mountain. 
S. serotina Ait. {S. pitcheri) Camp Uray on Grand river. 
Tonestes pygmaea (T. & G.) Nels. {Aplopappus pygmaeus Gray) 
Mount Byers, 12,000 feet. 
Aster glaucus T. & G. Specimen Mountain, 11,500 feet. 
A. Porteri Gray. Lookout Mountain. 
A. Geyeri (Gray) Howell. Denver. 
Machaeranthera canescens (Pursh) Gray. (Aster canescens Pursh.) 
Specimen Mountain ; west fork of St. Louis creek, 9,500 feet. 
M. viscosa (Nutt.) Greene. (Aster canescens var. Gray) Golden. 
Brigeron macranthus Nutt. Specimen Mountain; west fork of St. 
Louis creek. 
B. elatior (Gray) Greene. (B. grandiflora elatior) Specimen Moun- 
tain, 12,000 feet; Milner Pass, 10,700 feet. 
B. salsuginosus (Rich.) Gray. Specimen Mountain, 11,500 feet. 
B. concinnus T. & G. Lookout Mountain. 
B. Coulteri Porter. Mount Byers, 10,500 feet. 
B. pinnatasectus (Gray) Nels. (B. compositus var. Gray) Specimen 
Mountain, 12,900 feet. 
B. glahellus Nutt. Specimen Mountain, 12,000 feet. 
B. speciosus DC. Spruce creek, 9,100 feet. 
B. uniflorus Gray. Mount Byers, 12,000 feet. 
Antennaria dioica Gaertn. Spruce creek; west fork of St. Louis creek, 
9.000 feet; Milner Pass; dry, open parks and woods. 
A. arida Nels. Golden. 
Anaphalis subalpina (Gray) Ryd. (A. margaritacea as to Colorado 
range) Mount Byers, 12,500 feet; Berthoud Pass. 
Ambrosia artemisiaefolia L. Goldeti. 
Wyethia arizonica Gray. West fork of St. Louis creek, 9,000 feet; 
meadows. 
Madia glomerata Hook. Common near Fraser. 
Actinella acaulis (Pursh) Nutt. Specimen Mountain, 11,500 feet. 
Rydbergia grandiflora (Pursh) Greene. Specimen Mountain, 11,500 
feet; Mount Byers, 12,000 feet; above timber line. 
Achillea lanulosa Nutt. West fork of St. Louis creek; Mount Byers, 
12.000 feet. 
Artemisia frigida Willd. Manitou. 
A. tridentata Nutt. Camp Uray on Grand river; common. 
A. cana Pursh. Grand river. 
A. pedatifida Nutt. Lookout Mountain. 
A. fulgens Pursh. (A. alpina) Specimen Mountain, 12,000 feet. 
Arnica cordifolia Hook. Specimen Mountain; common in woods and 
burnt-over areas. 
A. subplumosa Greene (A. rivularis Greene) Mount Byers. 
A. celsa Nels. West fork of St. Louis creek. 
Senecio balsamitae Muhl. Specimen Mountain, 10,000 feet; Mount By- 
ers, 9,000 feet. 
