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alpina. A Pinus doubtfully referred to flexilis occurs near the 
Micawber Mine. 
LILIACER. Allium reticulatum and Streptopus amplexifo- 
dius, near the lakes, the first being characteristic of high altitudes. 
Zygadenus, near the Micawber, and also Allium cernuum f. obtu- 
sum, with rose-colored flowers, and obtuse perianth-segments. 
JUNCACEH. Juncus Mertensianus, at the lakes, and Luzula 
parviflora, near Brush Creek. 
CYPERACEA. Carex Gayana and C. atrata v. ovata, near 
‘Brush Creek. 
GRAMINEA. Bromus ciliatus, Agrostis niemalis and Elymus 
Americanus, near Brush Creek. Phleum pratense, is a “ casual” 
near the Micawber. 
HEPATICA. Marchantia polymorpha, at the Micawber. 
FUNGI. Hypocrea Richardsoni, Melampsora salicina, Phrag- 
midium subcorticium and Lycogala epidendrum, near the Micaw- 
ber. I observed, and have made descriptions of, seven species of 
Agaricus, one Coprinus, and one Boletus, but I have not yet been 
able to identify them. 
LICHENES. Usnea barbata produces a very striking effect in 
Swift Creek Gulch and Horseshoe Bend Gulch. 
The features of an alpine flora are very striking as compared 
with those of lower altitudes. Many orders and genera, so 
abundantly represented further down, are here only conspicuous 
by their absence. Such plants as the gentians and saxifrages 
become abundant. The prevalent colors change; blue and pink 
flowers become commoner, yellows and reds more rare. Nor is 
this phenomena in any way confined to our present district: Mr. 
F. W. Anderson, whom I questioned on the matter, wrote me 
that he had observed the same thing in Montana.* Hereafter, I 
hope to be able to elucidate this matter more fully. It is of great 
* Mr. Anderson wrote, (December 4th, 1889)—‘‘ Yes, blues and pinks do seem 
to replace yellows and reds in alpine regions, and not necessarily high alpine either ; 
but our difference in latitude may make up for the lack of extremely high altitude. 
Examples you ask for! Phloxes, Lupins, agent Erigerons, Gentians, Astragali, 
Pentstemons, Delphiniums.” : 
